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  	  <title><![CDATA[龙人pcb抄板]]></title>
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	  <description><![CDATA[ 主营：PCB抄板PCB设计SMT加工]]></description>
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	  <pubDate>Thu, 29 Oct 2009 11:49:43 +0800</pubDate>
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	  	<title><![CDATA[龙人pcb抄板]]></title>
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  <item>
  	<title><![CDATA[2009年10月29日]]></title>	
    <link>http://copy.pcb.blog.163.com/blog/static/55666570200992911497143</link>
    <description><![CDATA[<div><P>&nbsp;&nbsp;&nbsp; 深圳龙芯世纪科技成立于2007年，自成立以来率先提出以自主创新和反向研发相结合的理念，以欧美、日韩等高科技电子产品为突破口，依托深圳产业优势，建设具有中国特色的反向技术研制与自主设计开发服务平台。在短短两年时间里，已经发展成为集PCB反向技术研究、嵌入式系统研发、高档设备维修等多个研发项目为一体的领先软硬件系统方案提供商。</P>
<P>&nbsp;&nbsp;&nbsp; 龙芯世纪长期专注于软硬件设计开发与反向技术研究领域，业务广泛涉及各种大型应用系统开发、嵌入式开发平台、单片机及FPGA/CPLD开发；各种医疗设备、自动化控制设备、移动通信设备等高档设备维修与配件仿制开发；以及PCB抄板、PCB设计、芯片解密、芯片反向工程、SMT贴片加工、PCB样板与批量加工、功能样机的制作与调试、成品加工一条龙服务。</P>
<P>&nbsp;&nbsp;&nbsp;&nbsp; 我们始终坚持以市场变化为向导、以客户需求为己任的经营理念，为广大电子企业、研究机构及电子工程师提供完善产品方案和技术服务支持。目前已成功实现仿制开发与自主创新设计的产品涵盖军工、通信、网络、广播电视、测试测量、医疗、自动控制、嵌入式等众多应用领域。</P>
<P>&nbsp;&nbsp;&nbsp; 公司自成立以来便广纳贤才，已经拥有一批长期从事软硬件设计开发及反向技术研究的专业技术团队，他们多数来自微软、华邦、华东计算技术研究所、上海广电（集团)有限公司中央研究院、复旦大学微电子所、中国科学院、贝尔实验室等近30家知名企业及研究机构，早年就已经从事半导体的芯片设计、嵌入式系统与软件应用、硬件系统开发设计等技术研究，在产品自主开发设计及反向解析、芯片程序破解及反向设计、高档系统设备维修与研究等领域积累了丰富的实际经验。<BR>以实施产学研联合集中攻关，提升我国电子类支柱产业和软件产业核心竞争力为总体目标，龙芯世纪立足深圳制造，辐射全国优势产业，目前已经逐步形成了产学研一体化的企业组织，在深圳、北京等地建立了完善的服务网络，为推动我国信息产业自主技术创新与技术应用，提升电子企业核心竞争力提供了软硬件全方位技术支持，构建了一个开放、共享、合作、交流的专业技术服务平台。</P>
<P>&nbsp; </P></div>]]></description>
	    <author><![CDATA[龙人pcb抄板]]></author>
	    <comments>http://copy.pcb.blog.163.com/blog/static/55666570200992911497143</comments>
    <slash:comments>0</slash:comments>
    <guid isPermaLink="true">http://copy.pcb.blog.163.com/blog/static/55666570200992911497143</guid>
    <pubDate>Thu, 29 Oct 2009 11:49:07 +0800</pubDate>
    <dcterms:modified>2009-10-29T11:49:07+08:00</dcterms:modified>
  </item>    
  <item>
  	<title><![CDATA[ATmega128L与128问题]]></title>	
    <link>http://copy.pcb.blog.163.com/blog/static/556665702009221113823247</link>
    <description><![CDATA[<div><P style="TEXT-INDENT: 2em">&nbsp;</P>
<P style="TEXT-INDENT: 2em">ATmega128L与128问题</P>
<P style="TEXT-INDENT: 2em"><STRONG>问题</STRONG>：</P>
<P style="TEXT-INDENT: 2em">&nbsp;&nbsp; ATmega128的程序烧到128L中，需要改动吗？用双龙的下载程序，里面没有<A href="http://www.icinf.com/IC/index.asp">ATmega128L</A>芯片可选，是要选择ATmega128吗？</P>
<P style="TEXT-INDENT: 2em">我用几行简单的代码来验证，下面这个能使128L的D口接LED灯亮</P>
<P style="TEXT-INDENT: 2em">#include &lt;mega128.h&gt;</P>
<P style="TEXT-INDENT: 2em">void main(void)</P>
<P style="TEXT-INDENT: 2em">{</P>
<P style="TEXT-INDENT: 2em">&nbsp;while(1)</P>
<P style="TEXT-INDENT: 2em">&nbsp; {DDRD=0xFF;&nbsp;&nbsp; </P>
<P style="TEXT-INDENT: 2em">&nbsp;&nbsp; PORTD=0xFF; </P>
<P style="TEXT-INDENT: 2em">&nbsp;&nbsp; }</P>
<P style="TEXT-INDENT: 2em">}&nbsp;&nbsp; </P>
<P style="TEXT-INDENT: 2em">而下边这个在128L中就不运行，这是什么原因呢？</P>
<P style="TEXT-INDENT: 2em">#include &lt;mega128.h&gt;</P>
<P style="TEXT-INDENT: 2em">#include &lt;delay.h&gt;</P>
<P style="TEXT-INDENT: 2em">void main(void)</P>
<P style="TEXT-INDENT: 2em">{unsigned char i,j;</P>
<P style="TEXT-INDENT: 2em">&nbsp;DDRD=0xFF;&nbsp; /*端口D为输出*/</P>
<P style="TEXT-INDENT: 2em">&nbsp;while(1)</P>
<P style="TEXT-INDENT: 2em">&nbsp;&nbsp;&nbsp; {</P>
<P style="TEXT-INDENT: 2em">&nbsp;&nbsp;&nbsp;&nbsp; j=0x01;&nbsp; /*向前滚动*/</P>
<P style="TEXT-INDENT: 2em">&nbsp;&nbsp;&nbsp;&nbsp; for(i=0;i&lt;=6;i++)</P>
<P style="TEXT-INDENT: 2em">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; {PORTD=(j&lt;&lt;i);</P>
<P style="TEXT-INDENT: 2em">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; delay_ms(250);</P>
<P style="TEXT-INDENT: 2em">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; }</P>
<P style="TEXT-INDENT: 2em">&nbsp;&nbsp;&nbsp;&nbsp; j=0x80;&nbsp;&nbsp; /*向后滚动*/</P>
<P style="TEXT-INDENT: 2em">&nbsp;&nbsp;&nbsp;&nbsp; for(i=1;i&lt;=8;i++)</P>
<P style="TEXT-INDENT: 2em">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; {PORTD=(j&gt;&gt;i);</P>
<P style="TEXT-INDENT: 2em">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; delay_ms(250);</P>
<P style="TEXT-INDENT: 2em">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; }</P>
<P style="TEXT-INDENT: 2em">&nbsp;&nbsp;&nbsp; }</P>
<P style="TEXT-INDENT: 2em">} </P>
<P style="TEXT-INDENT: 2em">注：1、这两段代码在codevisionavr下编译成功，在avrstadio下仿真也正常。</P>
<P style="TEXT-INDENT: 2em">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 2、第二段就是一个跑马灯的效果，从D0口到D7然后再返回，如此循环.</P>
<P style="TEXT-INDENT: 2em"><STRONG>分析：</STRONG></P>
<P style="TEXT-INDENT: 2em">ATmega128L和128的程序是一样的，其它的型号芯片也是这样，其中L是表示电压范围而已</P>
<P style="TEXT-INDENT: 2em">AVR 芯片型号的解释， 以 ATmega48V-10PI 为例： </P>
<P style="TEXT-INDENT: 2em">ATmega48 是产品的基本型号； </P>
<P style="TEXT-INDENT: 2em">V 是电压范围。新出的芯片中，如M48/88/168、Tiny13/2313等，V 是1.8-5.5V 工作范围。 不带"V"是2.7-5.5V 工作范围 。 老的系列以L表示， L代表2.7-5.5V 工作范围 ， 不带"L"是4.5-5.5V 工作范围 。 </P>
<P style="TEXT-INDENT: 2em">10是表示最高工作频率是10MHz </P>
<P style="TEXT-INDENT: 2em">P表示DIP封装；</P>
<P style="TEXT-INDENT: 2em">AVR芯片有四种封装：A: TQFP / P: PDIP / S: SOIC / M: MLF </P>
<P style="TEXT-INDENT: 2em">I，表示温度范围，将来还表示 ROHS </P>
<P style="TEXT-INDENT: 2em">I，工业级 </P>
<P style="TEXT-INDENT: 2em">C，商业级 </P>
<P style="TEXT-INDENT: 2em">A，汽车级 </P>
<P style="TEXT-INDENT: 2em">E，扩展级 (-40--105C) </P>
<P style="TEXT-INDENT: 2em">U，符合ROHS，工业级，将来会以这个后缀为主，商业级不作新的标示 </P>
<P style="TEXT-INDENT: 2em"><A href="http://www.icinf.com/MCU/index.asp">ATmega128L解密</A>我们可以帮您完成，我们是专业提供芯片解密，单片机解密，IC解密，软件破解等相关服务，正好ATmega128L也是我们解密的范围，当然我们能解的型号很多，未公布上来，有需要可以直接与我们联系，电话：0755-83003609 我们的网站：<A href="http://www.icinf.com/">http://www.icinf.com</A> </P></div>]]></description>
	    <author><![CDATA[龙人pcb抄板]]></author>
	    <comments>http://copy.pcb.blog.163.com/blog/static/556665702009221113823247</comments>
    <slash:comments>2</slash:comments>
    <guid isPermaLink="true">http://copy.pcb.blog.163.com/blog/static/556665702009221113823247</guid>
    <pubDate>Sat, 21 Mar 2009 11:38:23 +0800</pubDate>
    <dcterms:modified>2009-03-21T11:38:23+08:00</dcterms:modified>
  </item>    
  <item>
  	<title><![CDATA[雕刻机与PCB抄板]]></title>	
    <link>http://copy.pcb.blog.163.com/blog/static/55666570200891843036825</link>
    <description><![CDATA[<div><P style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">雕刻机产品介绍：</SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">　　性能特点：</SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">　　★采用对断点记忆方式，保证可在意外（断刀）或隔天情况下加。</SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">　　★独持的多个工件加工原点的保存方式。</SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">　　★龙门式移动，坚固耐用长时间使用不变形，使定位精度更加精确。</SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">　　★大功率切削不仅使雕刻精细无锯齿，底面平整光滑轮廓清晰，而且进行</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">2</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">公分有机也轻松自如。</SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">　　★本机非常适合建筑模型，标识业、学校、企业事业单位使用。</SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">　　性能参数：</SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">　　</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">X</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">、</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">Y </FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">轴</SPAN><FONT face="Times New Roman"> </FONT><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">行</SPAN><FONT face="Times New Roman"> </FONT><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">程</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">600×900mm</FONT></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">　　</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">Z&nbsp;</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">轴</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">&nbsp;</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">行</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">&nbsp;</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">程＞</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">100mm</FONT></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">　　平</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">&nbsp;</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">台</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">&nbsp;</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">尺</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">&nbsp;</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">寸</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">720×1150mm</FONT></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">　　最高运行速度</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">4m-5.5m/min</FONT></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">　　最大雕刻速度</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">2m-3m/min</FONT></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">　　分辨率</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">0.005mm</FONT></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">　　重复定位精度</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">0.05mm</FONT></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">　　最大进料高度</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">100mm</FONT></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">　　雕刻指令</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">G</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">代码</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">*.u00*.mmg*.plt</FONT></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">　　软件运行环境</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">windows98/2000/xp</FONT></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">　　功率（不含主轴）</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">300W</FONT></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">　　工作电压</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">AC220V/50Hz</FONT></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">　　主轴功率</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">1.2KW</FONT></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">　　主轴转速</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">0-24000rpm/min</FONT></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">　　工作方式步进</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">Steper</FONT></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><A href="http://www.dmpcb.cn/"><FONT face="Times New Roman">PCB</FONT><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">：</SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">　　</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">PCB</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">抄板通过一定的技术手段，对电路板进行复制。现在一般的</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">PCB</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">抄板企业，能够实现各种电子产品控制板、电路板的抄板。</SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">　　雕刻机中的主要控制部件是控制板，也即</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">PCB</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">板，通过对控制板进行抄板或者说克隆，就实现了对产品控制部分的复制，而且一般而言，这个复制过程相对于整机购置来说，可以节省至少三分之一以上。</SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">一些技术先进的企业，还能实现整机的克隆，这就将产品价格进一步降低，对于工业控制领域来说，</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">PCB</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">抄板有着越来越大的贡献。</SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt"><SPAN lang=EN-US><FONT face="Times New Roman">&nbsp;</FONT></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">深圳龙人</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">PCB</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">抄板</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">PCB</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">设计工作室</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">(</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">深圳最专业的抄板公司</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">)</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">提供</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">PCB</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">抄板</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">,PCB</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">设计</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">芯片解密</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">印刷电路板</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">电路板抄板</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">,PCB</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">改板</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">,PCB</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">样机调试</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">,IC</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">解密及</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">bom</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">清单制作一条龙服务！</SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">联系地址</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">:</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">深圳市福田区</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">(</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">华强北</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">)</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">世界贸易广场</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">B</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">座</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">12F/13F </FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">邮编</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">:518033 </FONT></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">电话</SPAN><SPAN lang=EN-US><FONT face="Times New Roman"> (TEL):0755-83676323<SPAN style="mso-spacerun: yes">&nbsp; </SPAN>83000991 </FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">叶</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">小姐</SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt"><SPAN lang=EN-US><FONT face="Times New Roman"><SPAN style="mso-spacerun: yes">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </SPAN>0755-83676269<SPAN style="mso-spacerun: yes">&nbsp;&nbsp; </SPAN>83003639 </FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">冯小姐</SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">邮箱</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">(E-mail): </FONT><A href="mailto:lrpcb@126.com"><FONT face="Times New Roman" color=#295487>lrpcb@126.com</FONT></A><FONT face="Times New Roman">, <A href="mailto:PCBLab@126.com">PCBLab@126.com</A></FONT></SPAN><SPAN lang=EN-US><FONT face="Times New Roman">&nbsp;</FONT></SPAN></P></div>]]></description>
	    <author><![CDATA[龙人pcb抄板]]></author>
	    <comments>http://copy.pcb.blog.163.com/blog/static/55666570200891843036825</comments>
    <slash:comments>0</slash:comments>
    <guid isPermaLink="true">http://copy.pcb.blog.163.com/blog/static/55666570200891843036825</guid>
    <pubDate>Sat, 18 Oct 2008 16:30:36 +0800</pubDate>
    <dcterms:modified>2008-10-18T16:30:36+08:00</dcterms:modified>
  </item>    
  <item>
  	<title><![CDATA[中国PCB抄板企业的路在何方？]]></title>	
    <link>http://copy.pcb.blog.163.com/blog/static/55666570200862962235126</link>
    <description><![CDATA[<div><H3 style="MARGIN: 13pt 0cm"><FONT size=5><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">中国</SPAN><SPAN lang=EN-US><A href="http://www.pcblab.net/PCB/ChaoBan/"><SPAN style="COLOR: windowtext; LINE-HEIGHT: 173%; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-size: 16.0pt; mso-ansi-font-size: 16.0pt"><FONT face=Verdana>PCB</FONT></SPAN><SPAN lang=EN-US style="COLOR: windowtext; LINE-HEIGHT: 173%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-size: 16.0pt; mso-ansi-font-size: 16.0pt"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">企业的路在何方？</SPAN></FONT></H3>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">本文关键字：</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://www.pcb-ic.com/"><SPAN style="COLOR: windowtext; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-size: 12.0pt; mso-ansi-font-size: 10.5pt"><FONT face=Verdana>PCB</FONT></SPAN></A></SPAN></B><SPAN lang=EN-US><FONT face="Times New Roman">, </FONT><B style="mso-bidi-font-weight: normal"><A href="http://www.lrpcb.cn/"><SPAN lang=EN-US style="COLOR: windowtext; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-size: 12.0pt; mso-ansi-font-size: 10.5pt"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></B></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://www.pcbinf.com/"><SPAN style="COLOR: windowtext; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-size: 12.0pt; mso-ansi-font-size: 10.5pt"><FONT face=Verdana>PCB</FONT></SPAN><SPAN lang=EN-US style="COLOR: windowtext; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-size: 12.0pt; mso-ansi-font-size: 10.5pt"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://www.pcblab.net/"><SPAN lang=EN-US style="COLOR: windowtext; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-size: 12.0pt; mso-ansi-font-size: 10.5pt"><SPAN lang=EN-US>抄板公司</SPAN></SPAN></A></SPAN></B><SPAN lang=EN-US><BR style="mso-special-character: line-break"><BR style="mso-special-character: line-break"></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">改革开发促进了中国电子行业的快速发展，深圳应该是中国电子市场的中心地带，随着电子行业的发展，也出现了以龙人计算机为首的一大批从事</SPAN><SPAN lang=EN-US style="COLOR: black"><A href="http://www.pcbwork.net/"><SPAN style="COLOR: black; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-size: 12.0pt; mso-ansi-font-size: 10.5pt"><FONT face=Verdana>PCB</FONT></SPAN><SPAN lang=EN-US style="COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-size: 12.0pt; mso-ansi-font-size: 10.5pt"><SPAN lang=EN-US>设计</SPAN></SPAN></A></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，</SPAN><SPAN lang=EN-US style="COLOR: black"><A href="http://wwwpcb.xinwen520.net/"><SPAN style="COLOR: black; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-size: 12.0pt; mso-ansi-font-size: 10.5pt"><FONT face=Verdana>PCB</FONT></SPAN><SPAN lang=EN-US style="COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-size: 12.0pt; mso-ansi-font-size: 10.5pt"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，芯片解密这样的高科技技术服务企业，他们在中国电子发展中同样也扮演着一个重要的角色。</SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">进入高端领域不仅拓展了</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://www.pcblab.net/"><SPAN style="COLOR: windowtext; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-size: 12.0pt; mso-ansi-font-size: 10.5pt"><FONT face=Verdana>PCB</FONT></SPAN><SPAN lang=EN-US style="COLOR: windowtext; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-size: 12.0pt; mso-ansi-font-size: 10.5pt"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">企业的成长空间，同时由于高端产品更多的嵌入了技术、设计和服务等复杂劳动，其利润空间也更大。这不仅可以从电子行业层面得到验证，在</SPAN><SPAN lang=EN-US><A href="http://pcbsky.xinwen520.net/"><SPAN style="COLOR: windowtext; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-size: 12.0pt; mso-ansi-font-size: 10.5pt"><FONT face=Verdana>PCB</FONT></SPAN><SPAN lang=EN-US style="COLOR: windowtext; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-size: 12.0pt; mso-ansi-font-size: 10.5pt"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">企业层面同样如此。我国台湾电子企业发展早于大陆十几年，在经历了行业分化整合后，目前台湾相对细分行业龙头企业已经成为全球性的领导厂商。我们对于</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">PCB</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">行业中台湾最大的南亚电子和国内超声电子，液晶面板领域中台湾友达和京东方以及被动元件领域的台湾国巨和风华高科的毛利情况可以明显看到，台湾企业毛利水平远高于国内相关领域的龙头企业。从成长性来看，以南亚和超声电子的</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">PCB</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">业务对比，我们发现近两年南亚增速要高于超声电子</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">PCB</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">增速，这在一定程度上从电子企业层面印证了高端产品更具成长性和盈利性，可想而知对于给竞争企业提供反向研究的</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://www.dmpcb.cn/"><SPAN style="COLOR: windowtext; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-size: 12.0pt; mso-ansi-font-size: 10.5pt"><FONT face=Verdana>PCB</FONT></SPAN><SPAN lang=EN-US style="COLOR: windowtext; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-size: 12.0pt; mso-ansi-font-size: 10.5pt"><SPAN lang=EN-US>抄板</SPAN></SPAN><SPAN lang=EN-US style="COLOR: windowtext; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-size: 12.0pt; mso-ansi-font-size: 10.5pt"><SPAN lang=EN-US>公司</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">的获利情况。</SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">技术不断升级是</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">PCB</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">抄板行业的典型特征</SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 25.85pt; mso-char-indent-count: 2.45"><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://www.pcbon.net/"><SPAN style="COLOR: windowtext; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-size: 12.0pt; mso-ansi-font-size: 10.5pt"><FONT face=Verdana>PCB</FONT></SPAN><SPAN lang=EN-US style="COLOR: windowtext; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-size: 12.0pt; mso-ansi-font-size: 10.5pt"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">行业属于技术型行业，受终端产品不断升级的需要，产品技术的更新升级也十分频繁，技术的发展总是朝着高阶发展，无论是哪个子行业，都经历着技术变革的冲击与洗礼。这一特征不断地为新进者创造崛起的机会，也使市场主导权频繁转换。更高端的技术产品出现后一般竞争者都会效仿，而对</SPAN><SPAN lang=EN-US><A href="http://wwwpcb.xinwen520.net/"><SPAN style="COLOR: windowtext; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-size: 12.0pt; mso-ansi-font-size: 10.5pt"><FONT face=Verdana>PCB</FONT></SPAN><SPAN lang=EN-US style="COLOR: windowtext; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-size: 12.0pt; mso-ansi-font-size: 10.5pt"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">企业而言就必须要跟高新技术持平这样才能为竞争企业提供有价值的反向研究服务。</SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 26.25pt; mso-char-indent-count: 2.5"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">在</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://pcb007.xinwen520.net/"><SPAN lang=EN-US style="COLOR: windowtext; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-size: 12.0pt; mso-ansi-font-size: 10.5pt"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">技术升级的过程中，高端产品的增长呈加速态势，而低端产品增长则逐渐放缓，最终被完全替代，从而实现整个</SPAN><SPAN lang=EN-US><A href="http://pcbcb.xinwen520.net/"><SPAN style="COLOR: windowtext; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-size: 12.0pt; mso-ansi-font-size: 10.5pt"><FONT face=Verdana>PCB</FONT></SPAN><SPAN lang=EN-US style="COLOR: windowtext; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-size: 12.0pt; mso-ansi-font-size: 10.5pt"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">行业技术水平的提升。我们从</SPAN><SPAN lang=EN-US><A href="http://pcblab.xinwen520.net/"><SPAN style="COLOR: windowtext; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-size: 12.0pt; mso-ansi-font-size: 10.5pt"><FONT face=Verdana>PCB</FONT></SPAN></A></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">和半导体封装技术的发展上可以非常明显的看到这样的态势。在</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">PCB</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">领域，软性线路板</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">(FPC)</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">做为高端产品，自出现以来，其出货量增速始终高于传统硬制</SPAN><SPAN style="FONT-SIZE: 8pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Verdana; mso-hansi-font-family: Verdana">电路板</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">的增速。而从集成电路封装技术来看，高端</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">CSP</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">、</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">BGA</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">收入增速成上升态势，而低端</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">DIP</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">、</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">SOP</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">等封装形式增长逐步放缓。</SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">技术产品不断升级的过程，给那些创新能力强、技术实力强的</SPAN><SPAN style="FONT-SIZE: 8pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Verdana; mso-hansi-font-family: Verdana">抄板企业</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">维持或提升毛利水平创造了条件，而同时不断压缩低端</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><FONT face="Times New Roman">PCB</FONT></SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">抄板企业</SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">的生存空间。</SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><SPAN style="mso-spacerun: yes"><FONT face="Times New Roman">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </FONT></SPAN></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><SPAN style="mso-spacerun: yes"><FONT face="Times New Roman">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </FONT></SPAN></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">本文出自：</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://www.pcbon.net/"><SPAN lang=EN-US style="COLOR: windowtext; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-size: 12.0pt; mso-ansi-font-size: 10.5pt"><SPAN lang=EN-US>龙人计算机</SPAN></SPAN></A></SPAN></B></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman">&nbsp;</FONT></SPAN></P></div>]]></description>
	    <author><![CDATA[龙人pcb抄板]]></author>
	    <comments>http://copy.pcb.blog.163.com/blog/static/55666570200862962235126</comments>
    <slash:comments>1</slash:comments>
    <guid isPermaLink="true">http://copy.pcb.blog.163.com/blog/static/55666570200862962235126</guid>
    <pubDate>Tue, 29 Jul 2008 18:22:35 +0800</pubDate>
    <dcterms:modified>2008-07-29T18:22:35+08:00</dcterms:modified>
  </item>    
  <item>
  	<title><![CDATA[PCB抄板过程中如何避免细丝短路问题]]></title>	
    <link>http://copy.pcb.blog.163.com/blog/static/5566657020086296205592</link>
    <description><![CDATA[<div><H3 style="MARGIN: 13pt 0cm"><SPAN lang=EN-US><A href="http://pcbljy.xinwen520.net/"><FONT size=5><FONT face="Times New Roman">PCB</FONT><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板</SPAN></SPAN></FONT></A></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><FONT size=5>过程中如何避免细丝短路问题</FONT></SPAN></H3>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">本文关键字：</SPAN><SPAN lang=EN-US><A href="http://www.pcblab.net/PCB/ChaoBan/"><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://www.pcb-ic.com/"><FONT face="Times New Roman">PCB</FONT><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://www.pcbinf.com/"><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板公司</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://www.pcblab.net/"><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>深圳</SPAN></SPAN><FONT face="Times New Roman">PCB</FONT><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN></B></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman">&nbsp;</FONT></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman"><SPAN style="mso-spacerun: yes">&nbsp; </SPAN><SPAN style="mso-spacerun: yes">&nbsp;&nbsp;&nbsp;</SPAN></FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">对于刚接触</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://pcbsky.xinwen520.net/"><FONT face="Times New Roman">PCB</FONT><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">这行业的技术人员来说，在抄板过程中，难免会遇到一些问题，今天我们就</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">PCB</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">抄板过程中如何避免细丝短路这一问题进行下讲解。</SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman">&nbsp;</FONT></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 26.25pt; mso-char-indent-count: 2.5"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">细丝短路是</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://www.pcbon.net/" target=_blank><SPAN style="COLOR: windowtext; TEXT-DECORATION: none; text-underline: none"><FONT face="Times New Roman">pcb</FONT></SPAN><SPAN lang=EN-US style="COLOR: windowtext; FONT-FAMILY: 宋体; TEXT-DECORATION: none; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; text-underline: none"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">中经常遇到的问题，现在讲解如何解</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://www.dmpcb.cn/"><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">中的细丝短路问题。</SPAN><SPAN lang=EN-US><BR></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">在</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">O/S</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">测试和</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">AOI</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">检测时，会在</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://wwwpcb.xinwen520.net/"><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>电路板抄板</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">的最外层，绿漆下发现一种短路，我们叫做细丝短路，因为短路的位置目视看起来有点象一跟细丝，歪歪扭扭的，切片看起来主要是铜，与正常的铜面长在一起，此类缺点的危害很大。如不及时解决会直接影响</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://pcb007.xinwen520.net/"><FONT face="Times New Roman">pcb</FONT><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>板</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">的整体质量。</SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman">1</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">﹑有些细丝并不是完全造成短路，可能在客户上锡之后才造成短路，所以</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">O/S</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">测试很容易漏失，流到客户手里。</SPAN><SPAN lang=EN-US><FONT face="Times New Roman"> <BR>2</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">﹑有些细丝非常细，在覆盖绿漆后即使测试发现短路，但是修补人员不容易找到缺点位置，无法修补而报废。</SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">对于此类缺点的改善，可能需要很多方面去着手，主要在：</SPAN><SPAN lang=EN-US><FONT face="Times New Roman"> <BR>1</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">﹑</SPAN><SPAN lang=EN-US><A href="http://pcbcb.xinwen520.net/"><FONT face="Times New Roman">PCB</FONT></A></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">电镀，电镀时候如果槽中有细丝型的异物，可能会在电镀过程中吸附到板面，镀铜，镀锡后最终形成短路。</SPAN><SPAN lang=EN-US><FONT face="Times New Roman"> <BR>2</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">﹑也有人认为是由于水洗产生细菌，细菌造成。</SPAN><SPAN lang=EN-US><FONT face="Times New Roman"> <BR>3</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">﹑也有可能是前制程造成异物带入电镀线上。</SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">很多</SPAN><SPAN lang=EN-US><A href="http://pcblab.xinwen520.net/"><FONT face="Times New Roman">PCB</FONT><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>线路板</SPAN></SPAN></A></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">厂都有这样的问题。该细丝有多种来源：</SPAN><SPAN lang=EN-US><FONT face="Times New Roman"> <BR></FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">一是采用火山灰刷辊时候，里面的尼龙丝材料脱落，电镀后造成的，</SPAN><SPAN lang=EN-US><FONT face="Times New Roman"> <BR></FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">另一个是钻孔时候产生的的细丝，</SPAN><SPAN lang=EN-US><FONT face="Times New Roman"> <BR></FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">另一个是电镀吸附。</SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">第一种情况可以采用尼龙针刷，或者加强高压泵压力，加强水洗和水箱过滤。</SPAN><SPAN lang=EN-US><FONT face="Times New Roman"> <BR></FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">第二种是钻孔调整问题。第三种是电镀缸的污染清洁过滤问题。最后还要注意上阻焊油墨时候的刷板也是同样注意。在测试时候可以采用高压将这类细丝打断。</SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">以我以前的经验看，</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://pcbljy.xinwen520.net/" target=_blank><SPAN style="COLOR: windowtext; TEXT-DECORATION: none; text-underline: none"><FONT face="Times New Roman">pcb</FONT></SPAN><SPAN lang=EN-US style="COLOR: windowtext; FONT-FAMILY: 宋体; TEXT-DECORATION: none; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; text-underline: none"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">电镀产生的情况比较小，基本是刷板这个环节产生比较多，这个和钻孔产生毛刺过多有密切的联系，钻孔产生细丝的问题比较少。在实际</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://www.pcbwork.net/" target=_blank><SPAN style="COLOR: windowtext; TEXT-DECORATION: none; text-underline: none"><FONT face="Times New Roman">pcb</FONT></SPAN><SPAN lang=EN-US style="COLOR: windowtext; FONT-FAMILY: 宋体; TEXT-DECORATION: none; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; text-underline: none"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">过程中还会遇到许多问题，我会在以后一一介绍的。</SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><SPAN style="mso-spacerun: yes"><FONT face="Times New Roman">&nbsp;</FONT></SPAN></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><SPAN style="mso-spacerun: yes"><FONT face="Times New Roman">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </FONT></SPAN></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">本文出自：</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://www.pcbon.net/"><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>龙人计算机</SPAN></SPAN></A></SPAN></B></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman">&nbsp;</FONT></SPAN></P></div>]]></description>
	    <author><![CDATA[龙人pcb抄板]]></author>
	    <comments>http://copy.pcb.blog.163.com/blog/static/5566657020086296205592</comments>
    <slash:comments>0</slash:comments>
    <guid isPermaLink="true">http://copy.pcb.blog.163.com/blog/static/5566657020086296205592</guid>
    <pubDate>Tue, 29 Jul 2008 18:20:55 +0800</pubDate>
    <dcterms:modified>2008-07-29T18:20:55+08:00</dcterms:modified>
  </item>    
  <item>
  	<title><![CDATA[国内最新研发出先进的防抄板技术]]></title>	
    <link>http://copy.pcb.blog.163.com/blog/static/55666570200862423036337</link>
    <description><![CDATA[<div><H3 style="MARGIN: 13pt 0cm"><FONT size=5><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">国内最新研发出先进的防</SPAN><SPAN lang=EN-US><A href="http://www.pcbwork.net/pcbcb.asp"><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板技术</SPAN></SPAN></A></SPAN></FONT></H3>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman">1</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">概述：</SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">龙人</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">PCB</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">事业部在这近</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">10</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">年的</SPAN><SPAN lang=EN-US><A href="http://wwwpcb.xinwen520.net/"><FONT face="Times New Roman">PCB</FONT><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板</SPAN></SPAN></B></A></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">领中</SPAN><SPAN style="COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: Verdana; mso-hansi-font-family: Verdana">不断完善和创新反向研究的水平和知识的积累</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，在对仿制之后的产品反复进行深入的技术分析与研究，结合实际工作的操作经验，我们成功的自主研发出一套国际先进的</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">PCB</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">防</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://www.lrpcb.cn/"><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">技术。引起业内人士广泛关注。这项技术采用国际先进的</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://pcb007.xinwen520.net/"><FONT face="Times New Roman">PCB</FONT></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">高强度加密技术，帮助或者协助设计具有自主知识产权的产品，成功有效的对客户的产品</SPAN><SPAN lang=EN-US><BR><BR><SPAN style="mso-spacerun: yes"><FONT face="Times New Roman">&nbsp;&nbsp;&nbsp; </FONT></SPAN></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">本文关键字：</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://www.pcblab.net/"><FONT face="Times New Roman">PCB</FONT><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://www.pcb-ic.com/"><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://pcb007.xinwen520.net/"><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">公司，深圳</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">PCB</FONT><B style="mso-bidi-font-weight: normal"><A href="http://www.pcbinf.com/"><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></B></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 15.75pt; mso-char-indent-count: 1.5"><SPAN lang=EN-US><FONT face="Times New Roman">&nbsp;</FONT></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">技术提供了一整套完善的技术保密，效果是很明显的，并在不断的更新之中，是一套性价比最优的版权保护方案。而这些绝不多增加一分钱的成本，</SPAN><FONT face="Times New Roman"> </FONT><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">给广大客户带来了可观的经济利益，并且免除了过多的不必要的麻烦，受到越来越多的客户的欢迎。高品质、高效率、低成本、处处维护客户利益是我们立足于市场的最大优势。我们在同行业中技术与实力最强</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">, </FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">我们专著的是反向研究</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">我们解决了诸多的绝大部分同行不能解决的关键技术难题。我们以诚信为基础、以专业技术为保障，为广大客户提供满意的服务。</SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><BR><FONT face="Times New Roman">2</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">针对性解决方案：</SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">针对很多客户反映，其自主研发的电子产品的成品易被他人</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">copy</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">盗用，由此造成了巨大的经济损失。客户希望我们在生产过程中技术上加以改进，很多同行都遇到这类问题，基于技术与成本的原因，问题一直都没得到很好的解决。为了更好的服务于客户，我们的技术团队用心致力于防</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://pcbcb.xinwen520.net/"><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">技术的研究。并最终取得了重大突破，成功的研发出一项国内先</SPAN><SPAN lang=EN-US><BR></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">进的防抄板技术。研究发现虽然抄板程序繁多，过程复杂，但一般的抄板公司都还是能克隆出来。我们针对这一点，通过对各种</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://pcblab.xinwen520.net/"><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">技术的深刻认识，推出了一套完善的防破解方案。使其在抄</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">PCB</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">板过程中出现问题，无法得到检测，最终使得</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">copy</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">出来的</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">PCB</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">板为不良品</SPAN><SPAN lang=EN-US><BR></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，从而导致产品调试困难及失败，以此来有效的防抄板。我们自主研发出来的这项防抄板技术全面了解了客户的需求</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">, </FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">提供出有针对性的应用方案</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">, </FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">从而在基础上加以控制，优化产品的使用效果与发展空间！此项技术，主要针对双面至多层的</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://pcbljy.xinwen520.net/"><FONT face="Times New Roman">PCB</FONT><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>电路板</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，经过多次检验测试，其效果显著！</SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman">&nbsp;<BR>3</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">成本评估：</SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">我们的技术首先是建立在不多增加一分钱成本的基础上的。纯碎的技术性应用，所以由我们最后生产出来的</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">PCB</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">成品，其成本是没多增加一分钱的！我们的宗旨是更好的服务于客户！</SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><BR><FONT face="Times New Roman">4</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">优势：</SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">我们的这项方案简单方便，技术上在同行业中取得了主要的领先地位。由于增加了技术性难度，其它软件及其相关的防抄板，软件加密，增加电路，等都在很大程度上相应的提高了成品的最终成本，给客户带了麻烦，损失了客户的利益。而我们始终把客户的利益放在首位，整个过程不多增加一分钱成本。技术硬，成本低，收益高，这些都是我们的优势！</SPAN></P>
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<P style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman">&nbsp;</FONT></SPAN></P></div>]]></description>
	    <author><![CDATA[龙人pcb抄板]]></author>
	    <comments>http://copy.pcb.blog.163.com/blog/static/55666570200862423036337</comments>
    <slash:comments>0</slash:comments>
    <guid isPermaLink="true">http://copy.pcb.blog.163.com/blog/static/55666570200862423036337</guid>
    <pubDate>Thu, 24 Jul 2008 14:30:36 +0800</pubDate>
    <dcterms:modified>2008-07-24T14:30:36+08:00</dcterms:modified>
  </item>    
  <item>
  	<title><![CDATA[龙人提供专业抄板服务]]></title>	
    <link>http://copy.pcb.blog.163.com/blog/static/55666570200862422949422</link>
    <description><![CDATA[<div><H3 style="MARGIN: 13pt 0cm"><FONT size=5><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">龙人提供专业</SPAN><SPAN lang=EN-US><A href="http://www.pcbwork.net/"><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">服务</SPAN></FONT></H3>
<P style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21.1pt; mso-char-indent-count: 2.0"><A ></A><A href="http://www.pcbon.net/"><SPAN style="mso-bookmark: top"><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">龙人</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">PCB</FONT></SPAN></B></SPAN><SPAN style="mso-bookmark: top"><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">事业部</SPAN></B></SPAN><SPAN style="mso-bookmark: top"></SPAN></A><SPAN style="mso-bookmark: top"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">作为一家有着</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">15</FONT></SPAN></SPAN><SPAN style="mso-bookmark: top"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">年</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">PCB</FONT></SPAN></SPAN><SPAN style="mso-bookmark: top"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">板</SPAN></SPAN><A href="http://pcbsky.xinwen520.net/"><SPAN style="mso-bookmark: top"><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">抄板</SPAN></B></SPAN><SPAN style="mso-bookmark: top"></SPAN></A><SPAN style="mso-bookmark: top"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">经验的公司，拥有多名曾从事</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">PCB</FONT></SPAN></SPAN><SPAN style="mso-bookmark: top"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">设计、复杂电子产品研发工作多年的工程师，对多层</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">PCB</FONT></SPAN></SPAN><SPAN style="mso-bookmark: top"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">板、电子元器件、高低频数字及模拟电路原理有着极其详尽透彻的了解，可为广大客户提供多层</SPAN></SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://www.dmpcb.cn/"><FONT face="Times New Roman">PCB</FONT><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">、光绘输出、</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">BOM</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">（元器件清单）制作、原理图反推等服务。配合我司的芯片解密、</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">PCB</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">生产、</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">SMT</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">半成品及成品加工，可为客户提供省心的一站式服务。</SPAN><SPAN lang=EN-US><BR style="mso-special-character: line-break"><BR style="mso-special-character: line-break"></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">本文关键字：</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://www.pcb-ic.com/"><FONT face="Times New Roman">PCB</FONT><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://www.dmpcb.cn/"><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://www.pcbinf.com/"><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板服务</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，龙人</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://www.lrpcb.cn/"><FONT face="Times New Roman">PCB</FONT><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN></B></P>
<P style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0"><SPAN lang=EN-US><BR><FONT face="Times New Roman">&nbsp;&nbsp; <SPAN style="mso-spacerun: yes">&nbsp;&nbsp;</SPAN></FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">随着</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://wwwpcb.xinwen520.net/"><FONT face="Times New Roman">PCB</FONT></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">精密加工工艺的飞速发展，</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">PCB</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">基板的设计不断地向着多层、微线宽微间距、微孔、多盲孔埋孔方向发展，不少高频通讯产品的</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">PCB</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">基板还设计了严格的阻抗、大量的印刷电感、印刷电容。对此类高端</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://pcb007.xinwen520.net/"><FONT face="Times New Roman">PCB</FONT></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">板的结构及走线规则，我司工程技术人员的理解深入而透彻。无论是元件密集，遍布微带线、等长线的电脑主板、高端显卡板、千兆网络设备基板，或是对高频处理要求苛刻，电磁兼容性、阻抗控制严格的小灵通主板、手机主板、无线网卡等无线通讯设备，以及叠层多达</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">30</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">层，盲孔埋孔密布的工控主板，我们都能依据客户提供的一套完好样板（或样机）一次性克隆成功。</SPAN><SPAN lang=EN-US><FONT face="Times New Roman"> <BR>&nbsp;&nbsp;&nbsp; <SPAN style="mso-spacerun: yes">&nbsp;&nbsp;</SPAN></FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">克隆一款优秀的电子产品，电子元件的型号、参数确认往往是关键，常常决定着该产品是否能最终实现完全自主量产。随着精密电子工业的飞速发展，电子产品不断趋向于高度集成化、微型化，电子元件也不断趋向于微功耗、微封装、精密参数。一些元件由于封装微型化，其型号往往缩减为几个字符甚至特殊编码印于芯片背部，让人欲知其型号却无从下手。我司工程师拥有极其丰富的电子元件测试、选型经验，通过资料查询、电路分析等途径，可以迅速准确地确认元件的型号及相关参数，制作并整理出规范、详尽并可直接与元件销售商交流的</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">BOM</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">（元件清单），为客户节约大量的人力和成本，大大加快产品的量产进程。</SPAN><SPAN lang=EN-US><BR><FONT face="Times New Roman">&nbsp;&nbsp; <SPAN style="mso-spacerun: yes">&nbsp;&nbsp;</SPAN></FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">原理图在产品的调试、维修及改进过程中起着不可或缺的作用，我司依据样机反推的原理图，均与</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://pcbcb.xinwen520.net/"><FONT face="Times New Roman">PCB</FONT></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">作过严格的网络校对，图中元件位置号、型号、网络名称等完备且清晰易查，并采用</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">“</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">功能模块相关元件相对集中</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">”</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">的</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">“</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">模块化</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">”</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">绘制方式，其可读性可与设计原图媲美。阅读我司提供的原理图，客户可以轻松地把握该产品的设计思路，捕捉某些高端设计的闪光点，为己所用，亦可方便地融入自己独到的设计，开发出更高端的产品。</SPAN></P></div>]]></description>
	    <author><![CDATA[龙人pcb抄板]]></author>
	    <comments>http://copy.pcb.blog.163.com/blog/static/55666570200862422949422</comments>
    <slash:comments>0</slash:comments>
    <guid isPermaLink="true">http://copy.pcb.blog.163.com/blog/static/55666570200862422949422</guid>
    <pubDate>Thu, 24 Jul 2008 14:29:49 +0800</pubDate>
    <dcterms:modified>2008-07-24T14:29:49+08:00</dcterms:modified>
  </item>    
  <item>
  	<title><![CDATA[今后PCB抄板的研究方法]]></title>	
    <link>http://copy.pcb.blog.163.com/blog/static/5566657020086362134793</link>
    <description><![CDATA[<div><P style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman"><SPAN lang=EN-US style="COLOR: black; mso-bidi-font-size: 10.5pt">今后<A href="http://pcbliumin.blog.zj.com/"><STRONG><SPAN style="COLOR: black; TEXT-DECORATION: none; text-underline: none"><FONT face="Times New Roman">PCB</FONT></SPAN><SPAN lang=EN-US style="COLOR: black; FONT-FAMILY: 宋体; TEXT-DECORATION: none; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; text-underline: none"><SPAN lang=EN-US>抄板</SPAN></SPAN></STRONG></A>的研究方法</SPAN></FONT></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman">1&nbsp; </FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">微细化的适应性</SPAN><SPAN lang=EN-US><FONT face="Times New Roman"> </FONT></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">传统的图形宽度约为</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">100gm</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">左右，最近的安装电路的图形宽度只有传统的</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">1</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">／</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">3</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">左右，今后的检查装置必须适应图形的微细化。为了要高精度的检出缺陷，除了在研究像素的微细化和检查计数法的改良的同时，还要研究采用透镜来修正图像倾斜或者自动焦点法。</SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">在</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">PCB</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">抄板领域里，龙人作为领跑者，一直被模仿，从未被超越。龙人为您提供最专业的</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="COLOR: black; mso-bidi-font-size: 10.5pt"><A href="http://www.pcblab.net/PCB/ChaoBan"><SPAN lang=EN-US style="COLOR: black; FONT-FAMILY: 宋体; TEXT-DECORATION: none; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; text-underline: none"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">pcb</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">改板，</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="COLOR: black; mso-bidi-font-size: 10.5pt"><A href="http://www.pcbon.net/"><SPAN style="COLOR: black; TEXT-DECORATION: none; text-underline: none"><FONT face="Times New Roman">pcb</FONT></SPAN><SPAN lang=EN-US style="COLOR: black; FONT-FAMILY: 宋体; TEXT-DECORATION: none; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; text-underline: none"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，原理图，</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="COLOR: black; mso-bidi-font-size: 10.5pt"><A href="http://www.pcbinf.com/"><SPAN lang=EN-US style="COLOR: black; FONT-FAMILY: 宋体; TEXT-DECORATION: none; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; text-underline: none"><SPAN lang=EN-US>电路板抄板</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="COLOR: black; mso-bidi-font-size: 10.5pt"><A href="http://www.lrpcb.cn/xinpian.asp"><SPAN lang=EN-US style="COLOR: black; FONT-FAMILY: 宋体; TEXT-DECORATION: none; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; text-underline: none"><SPAN lang=EN-US>芯片解密</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">等服务，相信龙人会是您最好的选择！</SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman">2&nbsp; </FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">材料变化和图形变化的适应性</SPAN><SPAN lang=EN-US><FONT face="Times New Roman"> </FONT></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">随着检查对象</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">(</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">基材、图形和阻焊剂等</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">)</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">的薄型化，图形检查时必须设法改善检出反差和检查计数法。</SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman">3&nbsp; </FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">降低虚报</SPAN><SPAN lang=EN-US><FONT face="Times New Roman"> </FONT></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">如果检查装置振动，则会引起烦恼的虚报。由于装置引起的虚极发生的特性不同，装置导入以前必须进行充分评价。此外还必须致力于旨在减少虚报的工艺改善。</SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman">(1)</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">减少图形的微细损伤、沾污和生锈。</SPAN><SPAN lang=EN-US><BR><FONT face="Times New Roman">(2)</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">通过环境氛围的清洁化和工艺的改善来减少异物。</SPAN><SPAN lang=EN-US><BR><FONT face="Times New Roman">(3)</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">改善由于基板的尺寸伸缩和蚀剂引起的图形形状的波动等方面的制造工艺。</SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman">4</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">缺陷确认</SPAN><SPAN lang=EN-US><FONT face="Times New Roman"> <BR></FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">检查装置检出的缺陷往往要经过操作者再确认并进行修正。但是有时会存在操作者漏看而放过缺陷的问题。为了使操作者容易确认缺陷，尝试了下面的缺陷确认装置的改良。</SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman">(1)</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">变化照明角度，以便容易的发现缺陷。</SPAN><SPAN lang=EN-US><BR><FONT face="Times New Roman">(2)</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">采用荧光检查观察，以便容易的发现微细缺陷。</SPAN><SPAN lang=EN-US><BR><FONT face="Times New Roman">(3)</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">采用</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">TV</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">摄像的摇动功能进行三维观察。</SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman">5</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">焊料连接部的检查</SPAN><SPAN lang=EN-US><FONT face="Times New Roman"> </FONT></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">随着安装密度的提高，焊料连接部的检查越来越困难，希望开发适应高密度安装时的焊料连接部的检查技术。</SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman">6&nbsp; </FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">内部检查</SPAN><SPAN lang=EN-US><FONT face="Times New Roman"> </FONT></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">随着安装构造的变化，必须检查从外部难以看到的部分，为此，使用显微聚焦</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">X</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">线源的检查装置的功能扩大，以及</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">x</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">线层状照片和三维</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">CT</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">检查的需要都在进一步提高。</SPAN></P></div>]]></description>
	    <author><![CDATA[龙人pcb抄板]]></author>
	    <comments>http://copy.pcb.blog.163.com/blog/static/5566657020086362134793</comments>
    <slash:comments>0</slash:comments>
    <guid isPermaLink="true">http://copy.pcb.blog.163.com/blog/static/5566657020086362134793</guid>
    <pubDate>Thu, 3 Jul 2008 18:21:34 +0800</pubDate>
    <dcterms:modified>2008-07-03T18:21:34+08:00</dcterms:modified>
  </item>    
  <item>
  	<title><![CDATA[芯片加密的常见方法]]></title>	
    <link>http://copy.pcb.blog.163.com/blog/static/5566657020086362029370</link>
    <description><![CDATA[<div><P style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">1</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">＞</SPAN><SPAN style="FONT-SIZE: 9pt"><FONT face="Times New Roman"> </FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">磨掉型号</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">打上一些闻所未闻的标记</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">同时隐蔵震荡电路及复位电路</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">.<BR></FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">这种方法能起一定作用</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">但并不绝对</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">.</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">因为它对开</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"><A href="http://www.pcbwork.net/xpjm.asp"><SPAN lang=EN-US style="COLOR: black; FONT-FAMILY: 宋体; TEXT-DECORATION: none; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; text-underline: none"><SPAN lang=EN-US>芯</SPAN></SPAN><SPAN lang=EN-US style="COLOR: black; FONT-FAMILY: 宋体; TEXT-DECORATION: none; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; text-underline: none"><SPAN lang=EN-US>片解密</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">的人不起作用</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">.</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">外部环境可以隐藏</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">可硅片上的标志</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">桂片结构却无法隐藏</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">. </FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">这种方法的最高境界就是以裸片邦定</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">不以常规方式出脚</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">故意将</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"><A href="http://www.pcbinf.com/"><SPAN lang=EN-US style="COLOR: black; FONT-FAMILY: 宋体; TEXT-DECORATION: none; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; text-underline: none"><SPAN lang=EN-US>芯片</SPAN></SPAN><SPAN lang=EN-US style="COLOR: black; FONT-FAMILY: 宋体; TEXT-DECORATION: none; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; text-underline: none"><SPAN lang=EN-US>解密者</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">引入歧途</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">.</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">但这种方法难在裸片难找</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">.</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">不用急</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">我司可提供大量不同公司裸片</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">并协助你完成加密工作</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">.<BR>2</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">＞</SPAN><SPAN style="FONT-SIZE: 9pt"><FONT face="Times New Roman"> </FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">烧坏芯片不用资源</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">使人无法完成</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">”</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">读</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">”</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">操作</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">.<BR></FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">这种方法技高一筹</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">使</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"><A href="http://pcbpcb2.blog.163.com/"><SPAN lang=EN-US style="COLOR: black; FONT-FAMILY: 宋体; TEXT-DECORATION: none; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; text-underline: none"><SPAN lang=EN-US>芯片</SPAN></SPAN><SPAN lang=EN-US style="COLOR: black; FONT-FAMILY: 宋体; TEXT-DECORATION: none; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; text-underline: none"><SPAN lang=EN-US>解密</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">者麻烦一些</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">. </FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">这种方法常见的有两种</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">.</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">一种烧断邦定线</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">.</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">另一种则为烧坏输出缓存器</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">.</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">若是这样</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">解密者须借助价格昂贵的仪器</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">.</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">因此需增加</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"><A href="http://www.pcblab.net/PCB/IC"><SPAN lang=EN-US style="COLOR: black; FONT-FAMILY: 宋体; TEXT-DECORATION: none; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; text-underline: none"><SPAN lang=EN-US>芯片</SPAN></SPAN><SPAN lang=EN-US style="COLOR: black; FONT-FAMILY: 宋体; TEXT-DECORATION: none; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; text-underline: none"><SPAN lang=EN-US>解密费用</SPAN></SPAN></A></SPAN></B><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">也变向的增加了解密难度</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">.<BR>3</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">＞</SPAN><SPAN style="FONT-SIZE: 9pt"><FONT face="Times New Roman"> </FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">增加一颗比较难</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"><A href="http://pcbliumin.blog.bokee.net/"><SPAN lang=EN-US style="COLOR: black; FONT-FAMILY: 宋体; TEXT-DECORATION: none; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; text-underline: none"><SPAN lang=EN-US>解密的芯片</SPAN></SPAN></A></SPAN></B><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">如</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">CPLD</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">作上加密算法</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">.<BR>&nbsp;&nbsp; </FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">这种方法也挺理想</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">缺点就是增加了开发</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">生产成本</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">.</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">但同时也提高了他人的解密难度和成本</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">.<BR>4</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">＞</SPAN><SPAN style="FONT-SIZE: 9pt"><FONT face="Times New Roman"> </FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">作掩膜</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">属上具有公司特色的代号</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">.<BR></FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">这种方法是最完美的加密方法</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">但价格昂贵</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">.</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">故只有拥有雄厚财力</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">并有远大眼见的人才可使用</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">.<BR>5</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">＞</SPAN><SPAN style="FONT-SIZE: 9pt"><FONT face="Times New Roman"> </FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">作为加密方法</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">我个人认为</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">:</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">芯片制造厂家有很大关系</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">.</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">若</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">:</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">芯片制造厂家不公布</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">IC</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">的读时序</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">那解密者可就得抓破头皮了</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">.</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">这种方法其实有家厂使用了</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">.</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">他生产的芯片内部实际是</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">EPROM,</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">可解密者拿它一点办法都没有</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">因为无法得到</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"><A href="http://pcbliumin.studentboss.com/"><SPAN style="COLOR: black; TEXT-DECORATION: none; text-underline: none"><FONT face="Times New Roman">IC</FONT></SPAN></A></SPAN></B><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">的读时序</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">.<BR>6</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">＞本公司研究出一种新的加密方法</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">可使廉价单片机几乎无法解密</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">.<BR></FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">以上是本人对加密的一点浅见</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">希望大家指教</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">.</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">留下你的真知灼见</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">龙人计算机深圳分公司的</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"><A href="http://www.pcbwork.net/xpjm3.asp"><SPAN lang=EN-US style="COLOR: black; FONT-FAMILY: 宋体; TEXT-DECORATION: none; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; text-underline: none"><SPAN lang=EN-US>芯片</SPAN></SPAN><SPAN style="COLOR: black; TEXT-DECORATION: none; text-underline: none"><FONT face="Times New Roman">IC</FONT></SPAN><SPAN lang=EN-US style="COLOR: black; FONT-FAMILY: 宋体; TEXT-DECORATION: none; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; text-underline: none"><SPAN lang=EN-US>解密事业部</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">专门为客户提供<SPAN style="COLOR: black">芯片解密</SPAN>、</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"><A href="http://www.pcb-ic.com/"><SPAN style="COLOR: black; TEXT-DECORATION: none; text-underline: none"><FONT face="Times New Roman">IC</FONT></SPAN><SPAN lang=EN-US style="COLOR: black; FONT-FAMILY: 宋体; TEXT-DECORATION: none; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; text-underline: none"><SPAN lang=EN-US>解密</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">、单片机解密</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">(MCU</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">解密</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">)</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">和</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"><A href="http://space.yoka.com/pcbliumin"><SPAN lang=EN-US style="COLOR: black; FONT-FAMILY: 宋体; TEXT-DECORATION: none; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; text-underline: none"><SPAN lang=EN-US>软件破解</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">等服务。详情：</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"><A href="http://www.icinf.com/"><SPAN style="COLOR: black; TEXT-DECORATION: none; text-underline: none"><FONT face="Times New Roman">http://www.icinf.com</FONT></SPAN></A></SPAN></B></P></div>]]></description>
	    <author><![CDATA[龙人pcb抄板]]></author>
	    <comments>http://copy.pcb.blog.163.com/blog/static/5566657020086362029370</comments>
    <slash:comments>0</slash:comments>
    <guid isPermaLink="true">http://copy.pcb.blog.163.com/blog/static/5566657020086362029370</guid>
    <pubDate>Thu, 3 Jul 2008 18:20:29 +0800</pubDate>
    <dcterms:modified>2008-07-03T18:20:29+08:00</dcterms:modified>
  </item>    
  <item>
  	<title><![CDATA[PCB抄板制造应根据RoHS要求进行]]></title>	
    <link>http://copy.pcb.blog.163.com/blog/static/55666570200852835434777</link>
    <description><![CDATA[<div><H3 style="MARGIN: 13pt 0cm"><SPAN lang=EN-US><A href="http://www.pcbinf.com/"><FONT size=5><FONT face="Times New Roman">PCB</FONT><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板</SPAN></SPAN></FONT></A></SPAN><FONT size=5><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">制造应根据</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">RoHS</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">要求进行</SPAN></FONT></H3>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">本文关键字：</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://www.pcblab.net/"><FONT face="Times New Roman">PCB</FONT><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://www.dmpcb.cn/"><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板公司</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，龙人</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://www.lrpcb.cn/"><FONT face="Times New Roman">PCB</FONT><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://www.icinf.com/"><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>芯片解密</SPAN></SPAN></A></SPAN></B></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman">&nbsp;</FONT></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0"><SPAN lang=EN-US><FONT face="Times New Roman">SMART</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">集团</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://www.pcb-ic.com/"><FONT face="Times New Roman">PCB</FONT><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">技术总监</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">LEADOUT</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">项目协调</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">BobWillis</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">已设问的方法做开场白：指明</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://www.pcbwork.net/pcbcb.asp"><FONT face="Times New Roman">PCB</FONT><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">无铅顺应性的关键要求有哪些？如何定义规范？生产中出现了什么问题？采购和审核过程中应考虑哪些标准？无铅装配层压板中真正存在哪些问题？英国</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">Isola</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">常务董事</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">AlunMorgan</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">以通俗易懂的语言，</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://www.pcblab.net/PCB/ChaoBan/"><FONT face="Times New Roman">PCB</FONT><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">对覆铜层压板的特点和属性进行了解释，从原材料</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">(</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">占终产品成本超过</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">60%)</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">入手，对生产工艺的每一个阶段做了讲述，然后从化学、物理、和电属性方面把传统的双氰胺固化剂与当今的</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">novalak</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">固化</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">FR4</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">系统进行比较。最后，对人们常常把较高的玻璃化转变温度等同于较高的热稳定性的误解进行了纠正，并对无铅应用中环氧</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">-novalak</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">化学品的耐热性的重大改进做了清晰论证。</SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 26.25pt; mso-char-indent-count: 2.5"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">因为这些材料更坚硬，抗化学性更强，需要对</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://www.pcbon.net/PCBChaoBan/"><FONT face="Times New Roman">PCB</FONT><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">制造工艺的某些阶段，如：消除污点和打分，进行大力控制方能得出最适宜结果。</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">MerlinCircuitTechnology</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">技术销售总监</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">DennisPrice</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">对现有无铅</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://www.pcbinf.com/chaoban.html"><FONT face="Times New Roman">PCB</FONT><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">表面涂覆进行了全面评审，然后从专业的高科技快转车间出发分享了其亲身体验。</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">Merlin60%</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">的生产是无电镀镍浸金，需求稳定；约</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">30%</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">是热空气焊料</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">(</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">其中大部分是含铅的，用于被豁免的医药和工业控制应用</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">)</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，需求持平；还有一个就是客户对浸银的大量需求。</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">Merlin</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">的客户对有机可焊性保护层</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">(OSP)</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">涂覆不太感兴趣，经过最近的复苏后，浸锡也迅速失宠。尽管供应商声称当今一些化学品无锡须风险，</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">Denni</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">列举了一些令人担忧的板锡须例子，这些板是经过低温传递给斯堪的纳维亚客户。</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">BobWillis</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">叙述了生产中无铅焊接的一些实际经验，着重强调了装配商应同其</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">PCB</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">供应商紧密合作以选择最适合其特定应用的表面涂覆</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://pcbchaoban.spaces.live.com/"><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板公司</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，并应了解其特征及其对可焊性的影响。据专家介绍，他通过各种焊膏非常清晰的特写画面介绍了各种表面涂覆，经过几个老化循环后的润湿性能。</SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 26.25pt; mso-char-indent-count: 2.5"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">众所周知，行业需要简单而成本有效的可焊性测试来迎合板加工工艺，而目前的</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">IPC</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">测试方法与表面安装技术几乎没有多大关系</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://blog.csdn.net/pcbzmx/"><FONT face="Times New Roman">PCB</FONT><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">。在许多新产品导入</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">(NPL)</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">阶段使用的液滴聚，并测试显示了与润湿平衡测量极好的关联性，且测试覆联板可直接用于制造面板的斜料区。</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">Bob</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">建议这种测试可被视为行业标准的基石，听众对此响应热烈。英国标准协会认证经理</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">LenPillinger</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">在其有关规范以及印刷电路供应商审核方面发表了成功演讲，使沉闷的的主题变得轻松而富有启发性。英国性能标准</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">BS9760</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">已被随后也退出的欧洲</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">CECC(</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">欧洲电子元器件协会</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">)</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">标准取代，而现今</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">IEC62326</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">也失去了昔日了势头。据专家介绍，几个传统的</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">MIL-P</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">标准逐渐被淘汰出局，而</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">IPC6011</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">被推崇为国际认可的能力标准，以</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">IPCA-600</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">为工艺基准点。</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">RoHS</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">对测试方法产生了重大影响，</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">BSI</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">内部对测试标准进行了回顾，旨在提出有意义的参数，以使现有测试方法可继续使用。</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">Len</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">叙述了其在审核印刷电路板制造厂过程中经历的一些趣闻，但未指名道姓。其中最为典型的事例是，人们对技术做了重大投资，却忽视了类似加工工艺的简单事情。</SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman">&nbsp;</FONT></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 26.25pt; mso-char-indent-count: 2.5"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">一方面当销售部门接单时，往往不能正确评估其工厂能力的局限性；另一方面不了解标准的重要性、适用性极其具体细节，</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://pcbsheji.blog.china.com/"><FONT face="Times New Roman">PCB</FONT><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">买家要求的未必是他们需要的。</SPAN></P></div>]]></description>
	    <author><![CDATA[龙人pcb抄板]]></author>
	    <comments>http://copy.pcb.blog.163.com/blog/static/55666570200852835434777</comments>
    <slash:comments>0</slash:comments>
    <guid isPermaLink="true">http://copy.pcb.blog.163.com/blog/static/55666570200852835434777</guid>
    <pubDate>Sat, 28 Jun 2008 15:54:34 +0800</pubDate>
    <dcterms:modified>2008-06-28T15:54:34+08:00</dcterms:modified>
  </item>    
  <item>
  	<title><![CDATA[单片机解密方法，芯片解密技术]]></title>	
    <link>http://copy.pcb.blog.163.com/blog/static/55666570200852835412639</link>
    <description><![CDATA[<div><H3 style="MARGIN: 13pt 0cm"><SPAN lang=EN-US><A href="http://www.icinf.com/"><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US><FONT size=5>单片机解密</FONT></SPAN></SPAN></A></SPAN><FONT size=5><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">方法，</SPAN><SPAN lang=EN-US><A href="http://www.icdec.com/"><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>芯片</SPAN></SPAN><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>解密</SPAN></SPAN></A></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">技术</SPAN><SPAN lang=EN-US><FONT face="Times New Roman"> </FONT></SPAN></FONT></H3>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">本文关键字：</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://www.dmpcb.cn/services/IC/index.html"><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>芯片解密</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://www.pcbinf.com/"><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>单片机解密</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，深圳</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://www.pcbwork.net/xpjm.asp"><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>芯片解密</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，龙人</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://www.lrpcb.cn/"><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>芯片解密</SPAN></SPAN></A></SPAN></B></P>
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<P style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 15.75pt; mso-char-indent-count: 1.5"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">特殊商机</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">电子产品仿制</SPAN><FONT face="Times New Roman"> </FONT><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">专业</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://www.pcbon.net/"><FONT face="Times New Roman">IC</FONT><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>解密</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">、软硬件破解、电子产品仿制开发一条龙服务！</SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">朋友</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">国内外消费类电子产品每年上万亿的消费额</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">成千上万的新产品出现</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">只要你有好的创意</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">有好的电子产品需要模仿</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">,</FONT><B style="mso-bidi-font-weight: normal"><A href="http://www.pcb-ic.com/"><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>芯片解密</SPAN></SPAN></A></B></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">觉得一些产品有市场</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">你都可以找我们</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">我们可以帮你解决技术核心问题</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">.</FONT></SPAN></P>
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<P style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">龙人工作室是专业从事</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">PCB</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">板设计、克隆（抄板）、改板、</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://pcb007.xinwen520.net/"><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>芯片解密</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">原理图及</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">BOM</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">单制作、</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">IC</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">解密、软件破解及注册机、成品加工等一</SPAN><FONT face="Times New Roman"> </FONT><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">系列服务。我们拥有多名曾从事抄板及电子设计多年的资深硬件开发工程师，并拥有数名从事专业软件底层开发经验丰富的软件技术专家，对各类高中低端</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">PCB</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">板</SPAN><FONT face="Times New Roman"> </FONT><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">结构抄版改板、各类单片机、</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://pcbcb.xinwen520.net/"><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>芯片解密</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">多系列加密</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">IC</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">、软硬件加密狗及各类专业和行业软件解密工作有非常深厚的技术功底。我们已先后为很多的业内朋友提供了万余款堪称经典的作品及方案，为丰富中国电子类行业的活力与竞争力起到了自己应有的作用。</SPAN></P>
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<P style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">在抄板改板方面：</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://wwwpcb.xinwen520.net/"><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>芯片解密</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">论是元件密集，遍布微带线、等长线的电脑主板、高端显卡板、千兆网络设备基板，或是对高频处理要求苛刻，电磁兼容性控制严格的小灵通主</SPAN><FONT face="Times New Roman"> </FONT><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">板、手机主板、无线网卡及其他无线通讯设备，以及叠层多达</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">20</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">层，盲孔埋孔密布的工控主板，我们都能依据客户提供的一套完好样板（或样机）一次性克隆成</SPAN><FONT face="Times New Roman"> </FONT><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">功；</SPAN></P>
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<P style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">在软件破解方面：无论你是专业性软件，还是行业性软件，也不论他的加密算法及方式是多么的先进与诡异，多少层的加密，什么样的加密狗，我们都能迅速而快捷的为您打开方便之门，让这一切枷锁荡然无存；</SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><SPAN style="mso-spacerun: yes"><FONT face="Times New Roman">&nbsp;</FONT></SPAN></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">在解密方面：专业的</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">MCU/PLD</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">解密专家，不论你是软加密（单片机等）还是硬加密，也不论你是打磨了</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">IC</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">表明已经无法识别型号，我们都是使用我们丰富的经验，最大程度的保证把它打回原形，把它丰富的内脏打开呈现于您。</SPAN></P>
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<P style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">在电子产品生产方面：拥有近百人的加工工厂，现代化的生产设备、一流的质量控制体系以及雄厚的生产能力，并与深圳地区最大</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">PCB</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">集散地多家知名</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">PCB</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">供应商建立了良好的合作关系，所有这一切，都为您的手板制作及小批量成品加工与测试提供了坚实有利的保障。</SPAN></P>
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<P style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">公司作为</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">PCB</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">克隆、改板、</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">IC</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">解密及单片机破解改写、软件解密及注册机制作、样机制作调试、小批量成品加工一条龙服务型组织，可依据客户提供的含完好元器件的样板制作该产品的原理图，成图可读性可与设计原图媲美。</SPAN></P>
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<P style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">我司拥有专业级精确测量仪器设备，在器件</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">Mark</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">清晰可辨的前提下，可为客户提供信息完备的元器件清单（</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">BOM</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">单）。与我司长期合作之</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">PCB</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">生产厂家及电子加工工厂可提供中等规模的</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">PCB</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">订单制作及批量的样品生产服务。</SPAN></P></div>]]></description>
	    <author><![CDATA[龙人pcb抄板]]></author>
	    <comments>http://copy.pcb.blog.163.com/blog/static/55666570200852835412639</comments>
    <slash:comments>0</slash:comments>
    <guid isPermaLink="true">http://copy.pcb.blog.163.com/blog/static/55666570200852835412639</guid>
    <pubDate>Sat, 28 Jun 2008 15:54:12 +0800</pubDate>
    <dcterms:modified>2008-06-28T15:54:12+08:00</dcterms:modified>
  </item>    
  <item>
  	<title><![CDATA[Protel在PCB抄板使用中的问题]]></title>	
    <link>http://copy.pcb.blog.163.com/blog/static/5566657020085254712590</link>
    <description><![CDATA[<div><H3 style="MARGIN: 13pt 0cm"><FONT size=5><SPAN lang=EN-US><FONT face="Times New Roman">Protel</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">在</SPAN><SPAN lang=EN-US><A href="http://www.pcbon.net/"><FONT face="Times New Roman">PCB</FONT><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">使用中的问题</SPAN></FONT></H3>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">本文关键字：</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://www.pcbinf.com/"><FONT face="Times New Roman">PCB</FONT><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://www.pcblab.net/"><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">公司，</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://www.dmpcb.cn/"><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，深圳</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://www.lrpcb.cn/"><FONT face="Times New Roman">PCB</FONT><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，龙人</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://www.pcb-ic.com/"><FONT face="Times New Roman">PCB</FONT><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN></B></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman">&nbsp;</FONT></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman">&nbsp;</FONT></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">关于一些</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://www.pcbwork.net/pcbcb.asp"><FONT face="Times New Roman">PCB</FONT><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN></B><SPAN lang=EN-US><FONT face="Times New Roman">Protel99se</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">的简单的使用技术</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">更多的</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://www.pcblab.net/PCB/ChaoBan/"><FONT face="Times New Roman">PCB</FONT><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">或</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">protel99se</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">教程，可以参考</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://pcb007.xinwen520.net/"><FONT face="Times New Roman">PCB</FONT><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">资源网的</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">protel99se</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">视频教程栏目</SPAN><SPAN lang=EN-US><BR><BR></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">一、如何将一个</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://wwwpcb.xinwen520.net/"><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">原理图中的一部分加到另一张原理图上？</SPAN><SPAN lang=EN-US><BR></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">答：利用块拷贝。首先将要拷贝的原理图的那部分做成块，用其他文件名存储，然后调入目标原理图利用块读命令。</SPAN><SPAN lang=EN-US><BR><BR></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">二、</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://pcbcb.xinwen520.net/"><FONT face="Times New Roman">PCB</FONT><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">为何最后生成的制版图与原理图不相符，有一些网络没有连上？</SPAN><SPAN lang=EN-US><BR><BR></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">答：这种情况是很容易发生的，确实原理图上很明显是连上的，最后形成的制版图也与原理图生成的网络表对照过的，没有发现为连上的网络。这种问题出现在原理图上，原理图看上去是连上的，</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://pcbwork.xinwen520.net/"><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">由于画线不符和规范，导致表中他们并未连上，下面是连线属于不规范的连线：</SPAN><SPAN lang=EN-US><BR><FONT face="Times New Roman">c </FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">超过元器件的断点连线；</SPAN><SPAN lang=EN-US><BR><FONT face="Times New Roman">c </FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">连线的两部分有重复；</SPAN><SPAN lang=EN-US><BR><FONT face="Times New Roman">c </FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">在原理图连线时，应尽量做到：</SPAN><SPAN lang=EN-US><BR><FONT face="Times New Roman">1 </FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">在元件端点处连线；</SPAN><SPAN lang=EN-US><BR><FONT face="Times New Roman">2 </FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">元器件连线尽量一线连通，少出现直接将其端点对接上的方法来实现，中间应用细线连接。</SPAN><SPAN lang=EN-US><BR><BR></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">三、</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">Schedit</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">的直线有几种类型，他们的用途是什么？</SPAN><SPAN lang=EN-US><FONT face="Times New Roman"> <BR></FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">答：</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">Schedit</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">有四中连线：</SPAN><SPAN lang=EN-US><BR><FONT face="Times New Roman">1 Thin Signal </FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">细信号线</SPAN><SPAN lang=EN-US><BR><FONT face="Times New Roman">2 Thick Signal </FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">粗信号线</SPAN><SPAN lang=EN-US><BR><FONT face="Times New Roman">3 Bus </FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">总线</SPAN><SPAN lang=EN-US><BR><FONT face="Times New Roman">4 Dashed </FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">点划线</SPAN><SPAN lang=EN-US><BR><FONT face="Times New Roman">c</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">一般来说：</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">Thin Signal</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">（细信号线）最常用，</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">Thick Signal</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">（粗信号线）则多用于大电线或需要加重显示之用，</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">Bus</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">（总线）多用于部线，如数据总线、地址总线、控制总线等，他不表示直接相连，</SPAN><SPAN lang=EN-US><FONT face="Times New Roman"> Dashed</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">（点划线）则多用于将原理图某一部分围起来形成一个功能模块，可以用</SPAN><SPAN lang=EN-US><FONT face="Times New Roman"> Dashed</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">（点划线）将他们分开。</SPAN></P></div>]]></description>
	    <author><![CDATA[龙人pcb抄板]]></author>
	    <comments>http://copy.pcb.blog.163.com/blog/static/5566657020085254712590</comments>
    <slash:comments>0</slash:comments>
    <guid isPermaLink="true">http://copy.pcb.blog.163.com/blog/static/5566657020085254712590</guid>
    <pubDate>Wed, 25 Jun 2008 16:07:12 +0800</pubDate>
    <dcterms:modified>2008-06-25T16:07:12+08:00</dcterms:modified>
  </item>    
  <item>
  	<title><![CDATA[PowerPCB在PCB抄板中的应用技术]]></title>	
    <link>http://copy.pcb.blog.163.com/blog/static/5566657020085254648268</link>
    <description><![CDATA[<div><H3 style="MARGIN: 13pt 0cm"><FONT size=5><SPAN lang=EN-US><FONT face="Times New Roman">PowerPCB</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">在</SPAN><SPAN lang=EN-US><A href="http://www.pcbinf.com/"><FONT face="Times New Roman">PCB</FONT><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">中的应用技术</SPAN></FONT></H3>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">本人关键字：</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://www.pcblab.net/"><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://www.dmpcb.cn/"><FONT face="Times New Roman">PCB</FONT><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://www.lrpcb.cn/"><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>电路板</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">公司，龙人</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://www.pcbon.net/"><FONT face="Times New Roman">PCB</FONT><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，深圳</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://www.pcb-ic.com/"><FONT face="Times New Roman">PCB</FONT><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN></B></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman">&nbsp;</FONT></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">　　印制电路板（</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://www.pcbwork.net/pcbcb.asp"><FONT face="Times New Roman">PCB</FONT><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">）是电子产品中电路元件和器件的支撑件。它提供电路元件和器件之间的电气连接。随着电子技术的飞速发展，</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://www.pcblab.net/PCB/ChaoBan/"><FONT face="Times New Roman">PCB</FONT><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">的密度越来越高。</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://pcbwork.xinwen520.net/"><FONT face="Times New Roman">PCB</FONT><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">的好坏对抗干扰能力影响很大。实践证明，即使电路原理图设计正确，印制电路板设计不当，也会对电子产品的可靠性产生不利影响。例如，如果印制板两条细平行线靠得很近，则会形成信号波形的延迟，在传输线的终端形成反射噪声。因此，在设计印制电路板的时候，应注意采用正确的方法，遵守</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://pcb007.xinwen520.net/"><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">的一般原则，并应符合抗干扰设计的要求。</SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">一、</SPAN><SPAN lang=EN-US><FONT face="Times New Roman"> PCB</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">设计的一般原则</SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">　　要使电子电路获得最佳性能，元器件的布局及导线的布设是很重要的。为了设计质量好、造价低的</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">PCB</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">抄板，应遵循以下的一般性原则：</SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman">1.</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">布局</SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">　　首先，要考虑</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">PCB</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">抄板尺寸大小。</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">PCB</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">尺寸过大时，印制线条长，阻抗增加，抗噪声能力下降，成本也增加；过小，则散热不好，且邻近线条易受干扰。在确定</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">PCB</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">尺寸后，再确定特殊元件的位置。最后，根据电路的功能单元，对电路的全部元器件进行布局。</SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">在确定特殊元件的位置时要遵守以下原则：</SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">（</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">1</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">）尽可能缩短高频元器件之间的连线，设法减少它们的分布参数和相互间的电磁干扰。易受干扰的元器件不能相互挨得太近，输入和输出元件应尽量远离。</SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">（</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">2</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">）某些元器件或导线之间可能有较高的电位差，应加大它们之间的距离，以免放电引出意外短路。带高电压的元器件应尽量布置在调试时手不易触及的地方。</SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">（</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">3</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">）重量超过</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">15g</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">的元器件，应当用支架加以固定，然后焊接。那些又大又重、发热量多的元器件，不宜装在印制板上，而应装在整机的机箱底板上，且应考虑散热问题。热敏元件应远离发热元件。</SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">（</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">4</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">）对于电位器、可调电感线圈、可变电容器、微动开关等可调元件的布局应考虑整机的结构要求。若是机内调节，应放在印制板上方便调节的地方；若是机外调节，其位置要与调节旋钮在机箱面板上的位置相适应。</SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">（</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">5</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">）应留出印制板定位孔及固定支架所占用的位置。</SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">根据电路的功能单元。对电路的全部元器件进行布局时，要符合以下原则：</SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">（</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">1</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">）按照电路的流程安排各个功能电路单元的位置，使布局便于信号流通，并使信号尽可能保持一致的方向。</SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">（</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">2</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">）以每个功能电路的核心元件为中心，围绕它来进行布局。元器件应均匀、整齐、紧凑地排列在</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">PCB</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">上。尽量减少和缩短各元器件之间的引线和连接。</SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">（</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">3</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">）在高频下工作的电路，要考虑元器件之间的分布参数。一般电路应尽可能使元器件平行排列。这样，不但美观，而且装焊容易，易于批量生产。</SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">（</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">4</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">）位于电路板边缘的元器件，离电路板边缘一般不小于</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">2mm</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">。电路板的最佳形状为矩形。长宽双为</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">3:2</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">或</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">4:3</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">。电路板面尺寸大于</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">200×150mm</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">时，应考虑电路板所受的机械强度。</SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman">&nbsp;</FONT></SPAN></P></div>]]></description>
	    <author><![CDATA[龙人pcb抄板]]></author>
	    <comments>http://copy.pcb.blog.163.com/blog/static/5566657020085254648268</comments>
    <slash:comments>0</slash:comments>
    <guid isPermaLink="true">http://copy.pcb.blog.163.com/blog/static/5566657020085254648268</guid>
    <pubDate>Wed, 25 Jun 2008 16:06:48 +0800</pubDate>
    <dcterms:modified>2008-06-25T16:06:48+08:00</dcterms:modified>
  </item>    
  <item>
  	<title><![CDATA[PCB抄板无铅制程OSP膜的性能及表征]]></title>	
    <link>http://copy.pcb.blog.163.com/blog/static/55666570200852353544585</link>
    <description><![CDATA[<div><H3 style="MARGIN: 13pt 0cm"><SPAN lang=EN-US><A href="http://www.pcbon.net/"><FONT size=5><FONT face="Times New Roman">PCB</FONT><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板</SPAN></SPAN></FONT></A></SPAN><FONT size=5><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">无铅制程</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">OSP</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">膜的性能及表征</SPAN></FONT></H3>
<P style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; LINE-HEIGHT: 150%; mso-char-indent-count: 2.0"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">由于</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">OSP</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">（有机可焊保护膜）的优异</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://pcb007.xinwen520.net/"><FONT face="Times New Roman">PCB</FONT><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">可焊性、工艺简单易行以及低成本，被认为是最佳的</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://pcbsky.xinwen520.net/"><FONT face="Times New Roman">PCB</FONT><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">表面处理工艺。</SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman">&nbsp;</FONT></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; LINE-HEIGHT: 150%; mso-char-indent-count: 2.0"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">摘要：</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://www.pcb-ic.com/"><FONT face="Times New Roman">PCB</FONT><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">为了满足电子工业对于禁用铅的迫切要求，印刷电路板（</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://www.pcbwork.net/pcbcb.asp"><FONT face="Times New Roman">PCB</FONT><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">）工业正将最后表面处理从热风整平的喷锡（锡铅共晶）转移到其他表面处理，其中包括有机保护膜（</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">OSP</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">）、沉银、</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://www.pcblab.net/PCB/ChaoBan/"><FONT face="Times New Roman">PCB</FONT><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">沉锡以及化学镍沉金。</SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; LINE-HEIGHT: 150%; mso-char-indent-count: 2.0"><SPAN lang=EN-US><FONT face="Times New Roman">&nbsp;</FONT></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">本文关键字：</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://www.pcbinf.com/"><FONT face="Times New Roman">PCB</FONT><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://www.pcblab.net/"><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://www.dmpcb.cn/"><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">公司，深圳</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://www.lrpcb.cn/"><FONT face="Times New Roman">PCB</FONT><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN></B></P>
<P style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0"><SPAN lang=EN-US><FONT face="Times New Roman">&nbsp;</FONT></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; LINE-HEIGHT: 150%; mso-char-indent-count: 2.0"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">本论文使用热脱附</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">—</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">气相色谱</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">—</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">质谱分析法</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://pcbcb.xinwen520.net/"><FONT face="Times New Roman">PCB</FONT><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">（</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">TD-GC-MS</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">）、热重量分析法（</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">TGA</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">）以及光电子能谱分析法（</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">XPS</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">）分析新一代耐高温</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">OSP</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">膜的相关耐热特性。气相色谱测试耐高温</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">OSP</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">膜（</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">HTOSP</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">）</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://wwwpcb.xinwen520.net/"><FONT face="Times New Roman">PCB</FONT><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">内影响可焊性的小分子有机成分，同时说明耐高温</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">OSP</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">膜内的烷基苯并咪唑</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">-HT</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">具有极小的挥发性。而</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">TGA</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">数据表明</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">HTOSP</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">膜与现行工业标准的</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">OSP</FONT><B style="mso-bidi-font-weight: normal"><A href="http://pcbchaoban.spaces.live.com/"><FONT face="Times New Roman">PCB</FONT><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></B></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">膜相比具有更高的降解温度。</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">XPS</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">数据显示耐高温</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">OSP</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">经过</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">5</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">次无铅回流后，氧含量仅增加了约</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">1</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">％。</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://blog.csdn.net/pcbzmx/"><FONT face="Times New Roman">PCB</FONT><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">以上改进与工业无铅可焊性的要求直接有关。</SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; LINE-HEIGHT: 150%; mso-char-indent-count: 2.0"><SPAN lang=EN-US><FONT face="Times New Roman">OSP</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">膜用于电路板已有多年</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://cblog.chinadaily.com.cn/port/pcbkenny/"><FONT face="Times New Roman">PCB</FONT><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，是由于唑类化合物（</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">azole</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">）与过渡金属元素发生反应，如铜和锌，</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://blog.sina.com.cn/lrpcb"><FONT face="Times New Roman">PCB</FONT><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">而形成的有机金属聚合物薄膜。许多研究</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">[1,2,3]</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">都揭示金属表面上唑类化合物的腐蚀抑制机理。</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">G.P.Brown[3]</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">成功地合成了苯并咪唑和铜（</SPAN><SPAN lang=EN-US><FONT face="Times New Roman"> I I </FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">）</SPAN><FONT face="Times New Roman"> </FONT><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">、锌（</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">II</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">）以及其他过渡金属元素的有机金属聚合物，并通过</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">TGA</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">描述了聚（苯并咪唑</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">—</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">锌）优异的耐高温特性。</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">G.P.Brown</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">的</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">TGA</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">数据显示聚</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://pcbsheji.blog.china.com/"><FONT face="Times New Roman">PCB</FONT><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">（苯并咪唑</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">—</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">锌）的降解温度在空气中高达</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">400</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">℃</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，在氮保护气氛下则高达</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">500</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">℃</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，而聚（苯并咪唑</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">—</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">铜）的降解温度只有</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">250</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">℃</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">。最近研发的新型</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">HTOSP</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">膜是以聚（苯并咪唑</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">—</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">锌）化学特性为基础，从而具有最佳的耐热性。</SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; LINE-HEIGHT: 150%; mso-char-indent-count: 2.0"><SPAN lang=EN-US><FONT face="Times New Roman">OSP</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">膜主要由有机金属聚合物和在沉积过程中夹带有机小分子组成，如脂肪酸和唑类化合物。有机金属聚合物提供必须的抗腐蚀性、铜表面粘附性和</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">OSP</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">的表面硬度。有机金属聚合物的降解温度必须高于无铅焊料的熔点才能经受无铅制程处理。否则，</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">OSP</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">膜会在经过无铅制程处理后降解。</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">OSP</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">膜的降解温度很大程度上取决于有机金属聚合物的耐热性。影响铜抗氧化的另一重要因素是唑类化合物的挥发性，如苯并咪唑和苯基咪唑。</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">OSP</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">膜的小分子在无铅回流过程中会蒸发，因此会影响铜的抗氧化性。</SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 150%"><SPAN lang=EN-US><FONT face="Times New Roman">&nbsp;</FONT></SPAN></P></div>]]></description>
	    <author><![CDATA[龙人pcb抄板]]></author>
	    <comments>http://copy.pcb.blog.163.com/blog/static/55666570200852353544585</comments>
    <slash:comments>0</slash:comments>
    <guid isPermaLink="true">http://copy.pcb.blog.163.com/blog/static/55666570200852353544585</guid>
    <pubDate>Mon, 23 Jun 2008 17:35:44 +0800</pubDate>
    <dcterms:modified>2008-06-23T17:35:44+08:00</dcterms:modified>
  </item>    
  <item>
  	<title><![CDATA[PCB抄板中的EMC设计分析]]></title>	
    <link>http://copy.pcb.blog.163.com/blog/static/5566657020085235359977</link>
    <description><![CDATA[<div><H3 style="MARGIN: 13pt 0cm"><SPAN lang=EN-US><A href="http://www.pcbon.net/"><FONT size=5><FONT face="Times New Roman">PCB</FONT><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板</SPAN></SPAN></FONT></A></SPAN><FONT size=5><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">中的</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">EMC</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">设计分析</SPAN></FONT></H3>
<P style="MARGIN: 12pt 0cm; TEXT-INDENT: 24pt; TEXT-ALIGN: left; mso-pagination: widow-orphan" align=left><SPAN lang=EN-US style="FONT-FAMILY: Arial; mso-bidi-font-size: 10.5pt; mso-font-kerning: 0pt">EMC<B style="mso-bidi-font-weight: normal"><A href="http://pcb007.xinwen520.net/">PCB<SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></B></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-size: 10.5pt; mso-font-kerning: 0pt; mso-bidi-font-family: Arial">的主要设计技术包括电磁屏蔽方法、电路的滤波技术以及应特别注意的接地元件搭接的接地设计。</SPAN><SPAN lang=EN-US style="FONT-FAMILY: Arial; mso-bidi-font-size: 10.5pt; mso-font-kerning: 0pt"></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 26.25pt; mso-char-indent-count: 2.5"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">本文关键字：</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://www.pcbinf.com/"><FONT face="Times New Roman">PCB</FONT><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://www.pcblab.net/"><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板公司</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://www.dmpcb.cn/"><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">服务，深圳</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://www.lrpcb.cn/"><FONT face="Times New Roman">PCB</FONT><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN></B></P>
<P style="MARGIN: 12pt 0cm; TEXT-INDENT: 24pt; TEXT-ALIGN: left; mso-pagination: widow-orphan" align=left><SPAN lang=EN-US style="FONT-FAMILY: Arial; mso-bidi-font-size: 10.5pt; mso-font-kerning: 0pt">&nbsp;</SPAN></P>
<P style="MARGIN: 12pt 0cm; TEXT-INDENT: 24pt; TEXT-ALIGN: left; mso-pagination: widow-orphan" align=left><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-FAMILY: ??; mso-bidi-font-size: 10.5pt; mso-font-kerning: 0pt; mso-bidi-font-family: Arial"><A href="http://www.pcb-ic.com/"><FONT face="Times New Roman">PCB</FONT><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: ??; mso-hansi-font-family: ??"><SPAN lang=EN-US>抄</SPAN></SPAN><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: ??; mso-hansi-font-family: ??"><SPAN lang=EN-US>板</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-size: 10.5pt; mso-font-kerning: 0pt; mso-bidi-font-family: Arial">中的</SPAN><SPAN lang=EN-US style="FONT-FAMILY: Arial; mso-bidi-font-size: 10.5pt; mso-font-kerning: 0pt">EMC</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-size: 10.5pt; mso-font-kerning: 0pt; mso-bidi-font-family: Arial">设计应是任何电子器件和系统综合设计的一部分，它远比试图使产品达到</SPAN><SPAN lang=EN-US style="FONT-FAMILY: Arial; mso-bidi-font-size: 10.5pt; mso-font-kerning: 0pt">EMC</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-size: 10.5pt; mso-font-kerning: 0pt; mso-bidi-font-family: Arial">的其他方</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-FAMILY: Arial; mso-bidi-font-size: 10.5pt; mso-font-kerning: 0pt"><A href="http://www.pcbwork.net/pcbcb.asp">PCB<SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-size: 10.5pt; mso-font-kerning: 0pt; mso-bidi-font-family: Arial">法更节约成本。电磁兼容设计的关键技术是对电磁干扰源的研究，从电磁干扰源处控制其电磁发射是治本的方法</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-FAMILY: Arial; mso-bidi-font-size: 10.5pt; mso-font-kerning: 0pt"><A href="http://www.pcblab.net/PCB/ChaoBan/">PCB<SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-size: 10.5pt; mso-font-kerning: 0pt; mso-bidi-font-family: Arial">。控制干扰源的发射，除了从电磁干扰源产生的机理着手降低其产生电磁噪声的电平外，还需广泛地应用屏蔽（包括隔离）、滤波和接地技术。</SPAN><SPAN lang=EN-US style="FONT-FAMILY: Arial; mso-bidi-font-size: 10.5pt; mso-font-kerning: 0pt"></SPAN></P>
<P style="MARGIN: 12pt 0cm; TEXT-INDENT: 24pt; TEXT-ALIGN: left; mso-pagination: widow-orphan" align=left><SPAN lang=EN-US style="FONT-FAMILY: Arial; mso-bidi-font-size: 10.5pt; mso-font-kerning: 0pt">&nbsp;</SPAN></P>
<P style="MARGIN: 12pt 0cm; TEXT-INDENT: 24pt; TEXT-ALIGN: left; mso-pagination: widow-orphan" align=left><B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-font-kerning: 0pt; mso-bidi-font-family: Arial">一、</SPAN></B><B><SPAN lang=EN-US style="FONT-FAMILY: Arial; mso-font-kerning: 0pt"><A href="http://pcbsky.xinwen520.net/">PCB<SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial"><SPAN lang=EN-US>抄</SPAN></SPAN><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial"><SPAN lang=EN-US>板</SPAN></SPAN></A></SPAN></B><B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-font-kerning: 0pt; mso-bidi-font-family: Arial">中的</SPAN></B><B><SPAN lang=EN-US style="FONT-FAMILY: Arial; mso-font-kerning: 0pt">EMC</SPAN></B><B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-font-kerning: 0pt; mso-bidi-font-family: Arial">设计金字塔</SPAN></B><SPAN lang=EN-US style="FONT-FAMILY: Arial; mso-bidi-font-size: 10.5pt; mso-font-kerning: 0pt"><BR></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-size: 10.5pt; mso-font-kerning: 0pt; mso-bidi-font-family: Arial">如图</SPAN><SPAN lang=EN-US style="FONT-FAMILY: Arial; mso-bidi-font-size: 10.5pt; mso-font-kerning: 0pt">9-4</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-size: 10.5pt; mso-font-kerning: 0pt; mso-bidi-font-family: Arial">所示为器件和系统</SPAN><SPAN lang=EN-US style="FONT-FAMILY: Arial; mso-bidi-font-size: 10.5pt; mso-font-kerning: 0pt">EMC</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-size: 10.5pt; mso-font-kerning: 0pt; mso-bidi-font-family: Arial">最佳设计的推荐方法，这是一个金字塔式图形。</SPAN><SPAN lang=EN-US style="FONT-FAMILY: Arial; mso-bidi-font-size: 10.5pt; mso-font-kerning: 0pt"><BR></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-size: 10.5pt; mso-font-kerning: 0pt; mso-bidi-font-family: Arial">首先，优秀的</SPAN><SPAN lang=EN-US style="FONT-FAMILY: Arial; mso-bidi-font-size: 10.5pt; mso-font-kerning: 0pt">EMC</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-size: 10.5pt; mso-font-kerning: 0pt; mso-bidi-font-family: Arial">设计</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-FAMILY: Arial; mso-bidi-font-size: 10.5pt; mso-font-kerning: 0pt"><A href="http://pcbcb.xinwen520.net/">PCB<SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-size: 10.5pt; mso-font-kerning: 0pt; mso-bidi-font-family: Arial">的基础是良好的电气和机械设计原则的应用。这其中包括可靠性考虑，比如在可接受的容限内设计规范的满足、</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-FAMILY: Arial; mso-bidi-font-size: 10.5pt; mso-font-kerning: 0pt"><A href="http://wwwpcb.xinwen520.net/">PCB<SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-size: 10.5pt; mso-font-kerning: 0pt; mso-bidi-font-family: Arial">好的组装方法以及各种正在开发的测试技术。</SPAN><SPAN lang=EN-US style="FONT-FAMILY: Arial; mso-bidi-font-size: 10.5pt; mso-font-kerning: 0pt"></SPAN></P>
<P style="MARGIN: 12pt 0cm; TEXT-INDENT: 24pt; TEXT-ALIGN: left; mso-pagination: widow-orphan" align=left><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-size: 10.5pt; mso-font-kerning: 0pt; mso-bidi-font-family: Arial">一般来说，驱动当今电子设备的装置要安装在</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-FAMILY: ??; mso-bidi-font-size: 10.5pt; mso-font-kerning: 0pt; mso-bidi-font-family: Arial"><A href="http://pcbchaoban.spaces.live.com/"><FONT face="Times New Roman">PCB</FONT><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-size: 10.5pt; mso-font-kerning: 0pt; mso-bidi-font-family: Arial">上。这些装置由具有潜在干扰源以及对电磁能量敏感的元件和电路构成。因此，</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-FAMILY: ??; mso-bidi-font-size: 10.5pt; mso-font-kerning: 0pt; mso-bidi-font-family: Arial"><A href="http://blog.csdn.net/pcbzmx/"><FONT face="Times New Roman">PCB</FONT><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-size: 10.5pt; mso-font-kerning: 0pt; mso-bidi-font-family: Arial">的</SPAN><SPAN lang=EN-US style="FONT-FAMILY: Arial; mso-bidi-font-size: 10.5pt; mso-font-kerning: 0pt">EMC</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-size: 10.5pt; mso-font-kerning: 0pt; mso-bidi-font-family: Arial">设计是</SPAN><SPAN lang=EN-US style="FONT-FAMILY: Arial; mso-bidi-font-size: 10.5pt; mso-font-kerning: 0pt">EMC</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-size: 10.5pt; mso-font-kerning: 0pt; mso-bidi-font-family: Arial">设计中的下一个最重要的问题。有源元件的位置、印制线的走线、阻抗的匹配、接地的设计以及电路的滤波均应在</SPAN><SPAN lang=EN-US style="FONT-FAMILY: Arial; mso-bidi-font-size: 10.5pt; mso-font-kerning: 0pt">EMC</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-size: 10.5pt; mso-font-kerning: 0pt; mso-bidi-font-family: Arial">设计时加以考虑。一些</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-FAMILY: ??; mso-bidi-font-size: 10.5pt; mso-font-kerning: 0pt; mso-bidi-font-family: Arial"><A href="http://x.zuihao.biz/html/21/35121.html"><FONT face="Times New Roman">PCB</FONT><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-size: 10.5pt; mso-font-kerning: 0pt; mso-bidi-font-family: Arial">元件还需要进行屏蔽。</SPAN><SPAN lang=EN-US style="FONT-FAMILY: Arial; mso-bidi-font-size: 10.5pt; mso-font-kerning: 0pt"></SPAN></P>
<P style="MARGIN: 12pt 0cm; TEXT-INDENT: 24pt; TEXT-ALIGN: left; mso-pagination: widow-orphan" align=left><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-size: 10.5pt; mso-font-kerning: 0pt; mso-bidi-font-family: Arial">再次，内部电缆一般用来连接</SPAN><SPAN lang=EN-US style="FONT-FAMILY: Arial; mso-bidi-font-size: 10.5pt; mso-font-kerning: 0pt"><A href="http://www.pcbres.com/"><SPAN style="COLOR: windowtext; FONT-FAMILY: ??; TEXT-DECORATION: none; text-underline: none">PCB</SPAN></A></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-size: 10.5pt; mso-font-kerning: 0pt; mso-bidi-font-family: Arial">或其他内部子组件。因此，包括走线方法和屏蔽的内部电缆</SPAN><SPAN lang=EN-US style="FONT-FAMILY: Arial; mso-bidi-font-size: 10.5pt; mso-font-kerning: 0pt">EMC</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-size: 10.5pt; mso-font-kerning: 0pt; mso-bidi-font-family: Arial">设计对于任何给定器件的整体</SPAN><SPAN lang=EN-US style="FONT-FAMILY: Arial; mso-bidi-font-size: 10.5pt; mso-font-kerning: 0pt">EMC</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-size: 10.5pt; mso-font-kerning: 0pt; mso-bidi-font-family: Arial">来说是十分重要的。</SPAN><SPAN lang=EN-US style="FONT-FAMILY: Arial; mso-bidi-font-size: 10.5pt; mso-font-kerning: 0pt"></SPAN></P>
<P style="MARGIN: 12pt 0cm; TEXT-INDENT: 24pt; TEXT-ALIGN: left; mso-pagination: widow-orphan" align=left><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-size: 10.5pt; mso-font-kerning: 0pt; mso-bidi-font-family: Arial">在</SPAN><SPAN lang=EN-US style="FONT-FAMILY: Arial; mso-bidi-font-size: 10.5pt; mso-font-kerning: 0pt"><A href="http://www.pcbres.com/"><SPAN style="COLOR: windowtext; FONT-FAMILY: ??; TEXT-DECORATION: none; text-underline: none">PCB</SPAN></A></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-size: 10.5pt; mso-font-kerning: 0pt; mso-bidi-font-family: Arial">的</SPAN><SPAN lang=EN-US style="FONT-FAMILY: Arial; mso-bidi-font-size: 10.5pt; mso-font-kerning: 0pt">EMC</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-size: 10.5pt; mso-font-kerning: 0pt; mso-bidi-font-family: Arial">设计和内部电缆设计完成以后，应特别注意机壳的屏蔽设计和所有缝隙、穿孔和电缆通孔的处理方法。</SPAN><SPAN lang=EN-US style="FONT-FAMILY: Arial; mso-bidi-font-size: 10.5pt; mso-font-kerning: 0pt"><BR></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-size: 10.5pt; mso-font-kerning: 0pt; mso-bidi-font-family: Arial">最后，还应着重考虑输入和输出电源以及其他电缆的滤波问题。</SPAN><SPAN lang=EN-US style="FONT-FAMILY: Arial; mso-bidi-font-size: 10.5pt; mso-font-kerning: 0pt"></SPAN></P>
<P style="MARGIN: 12pt 0cm; TEXT-INDENT: 24pt; TEXT-ALIGN: left; mso-pagination: widow-orphan" align=left><B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-font-kerning: 0pt; mso-bidi-font-family: Arial">二、电磁屏蔽</SPAN></B><SPAN lang=EN-US style="FONT-FAMILY: Arial; mso-bidi-font-size: 10.5pt; mso-font-kerning: 0pt"><BR></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-size: 10.5pt; mso-font-kerning: 0pt; mso-bidi-font-family: Arial">屏蔽主要运用各种导电材料，制造成各种壳体并与大地连接，以切断通过空间的静电耦合、感应耦合或交变电磁场耦合形成的电磁噪声传播途径，隔离主要运用继电器、隔离变压器或光电隔离器等器件来切断电磁噪声以传导形式的传播途径，其特点是将两部分电路的地线系统分隔开来，切断通过阻抗进行耦合的可能。</SPAN><SPAN lang=EN-US style="FONT-FAMILY: Arial; mso-bidi-font-size: 10.5pt; mso-font-kerning: 0pt"></SPAN></P>
<P style="MARGIN: 12pt 0cm; TEXT-INDENT: 24pt; TEXT-ALIGN: left; mso-pagination: widow-orphan" align=left><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-size: 10.5pt; mso-font-kerning: 0pt; mso-bidi-font-family: Arial">屏蔽效能越高，每增加</SPAN><SPAN lang=EN-US style="FONT-FAMILY: Arial; mso-bidi-font-size: 10.5pt; mso-font-kerning: 0pt">20dB</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-size: 10.5pt; mso-font-kerning: 0pt; mso-bidi-font-family: Arial">的难度越大。民用设备的机箱一般仅需要</SPAN><SPAN lang=EN-US style="FONT-FAMILY: Arial; mso-bidi-font-size: 10.5pt; mso-font-kerning: 0pt">40dB</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-size: 10.5pt; mso-font-kerning: 0pt; mso-bidi-font-family: Arial">左右的屏蔽效能，而军用设备的机箱一般需要</SPAN><SPAN lang=EN-US style="FONT-FAMILY: Arial; mso-bidi-font-size: 10.5pt; mso-font-kerning: 0pt">60dB</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-size: 10.5pt; mso-font-kerning: 0pt; mso-bidi-font-family: Arial">以上的屏蔽效能。</SPAN><SPAN lang=EN-US style="FONT-FAMILY: Arial; mso-bidi-font-size: 10.5pt; mso-font-kerning: 0pt"><BR></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-size: 10.5pt; mso-font-kerning: 0pt; mso-bidi-font-family: Arial">具有较高导电、导磁特性的材料可以作为屏蔽材料。常用的屏蔽材料有钢板、铝板、铝箔、铜板、铜箔等。随着对民用产品电磁兼容性要求的严格化，越来越多的厂家采取在塑料机箱上镀镍或铜的方法来实现屏蔽。</SPAN><SPAN lang=EN-US style="FONT-FAMILY: Arial; mso-bidi-font-size: 10.5pt; mso-font-kerning: 0pt"></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman">&nbsp;</FONT></SPAN></P></div>]]></description>
	    <author><![CDATA[龙人pcb抄板]]></author>
	    <comments>http://copy.pcb.blog.163.com/blog/static/5566657020085235359977</comments>
    <slash:comments>0</slash:comments>
    <guid isPermaLink="true">http://copy.pcb.blog.163.com/blog/static/5566657020085235359977</guid>
    <pubDate>Mon, 23 Jun 2008 17:35:09 +0800</pubDate>
    <dcterms:modified>2008-06-23T17:35:09+08:00</dcterms:modified>
  </item>    
  <item>
  	<title><![CDATA[为什么pcb抄板采用蛇形走线]]></title>	
    <link>http://copy.pcb.blog.163.com/blog/static/55666570200852111413379</link>
    <description><![CDATA[<div><P style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">深圳龙人拥有一批经验丰富的专家为您提供专业的</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 9pt"><A href="http://www.lrpcb.cn/"><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 9pt"><A href="http://www.pcbwork.net/"><FONT face="Times New Roman">pcb</FONT><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">pcb</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">设计，</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 9pt"><A href="http://www.icdec.com/"><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>芯片解密</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 9pt"><A href="http://pcb007.xinwen520.net/"><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>电路板抄板</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，电路板设计，</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 9pt"><A href="http://www.pcblab.net/PCB/IC"><FONT face="Times New Roman">IC</FONT><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>解密</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 9pt"><A href="http://www.pcbwork.net/xpjm.asp"><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>单片机解密</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">pcb</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">改板等服务，详情：</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 9pt"><A href="http://www.pcbon.net/"><FONT face="Times New Roman">http://www.pcbon.net</FONT></A></SPAN></B><SPAN lang=EN-US style="FONT-SIZE: 9pt"></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 9pt"><A href="http://liuminpcb.sogua.com/"><FONT face="Times New Roman">PCB</FONT><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">上的任何一条走线在通过高频信号的情况下都会对该信号造成时延时，蛇形走线的主要作用是补偿</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">“</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">同一组相关</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">”</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">信号线中延时较小的部分，这些部分通常是没有或比其它信号少通过另外的逻辑处理；最典型的就是时钟线，通常它不需经过任何其它逻辑处理，因而其延</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><BR></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">时会小于其它相关信号。</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><BR></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">高速数字</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 9pt"><A href="http://blog.cechinamag.com/liuminpcb"><FONT face="Times New Roman">PCB</FONT><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄</SPAN></SPAN><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>板</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">的等线长是为了使各信号的延迟差保持在一个范围内</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">保证系统在同一周期内读取的数据的有效性</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">(</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">延迟差超过一个时钟周期时会错读下一周期的数据</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">),</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">一般要求延迟差不超过</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">1/4</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">时钟周期</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">单位长度的线延迟差也是固定的</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">延迟跟线宽</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">线长</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">铜厚</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">板层结构有关</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">但线过长会增大分布电容和分布电感</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">使信号质量</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">所以时钟</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">IC</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">引脚一般都接</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">RC</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">端接</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">但蛇形走线并非起电感的作用</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">相反的</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">电感会使信号中的上升元中的高次谐波相移</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">造成信号质量恶化</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">所以要求蛇形线间距最少是线宽的两倍</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">信号的上升时间越小就越易受分布电容和分布电感的影响</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">.<BR></FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">因为应用场合不同具不同的作用</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">如果蛇形走线在电脑板中出现，其主要起到一个滤波电感的作用，提高电路的抗干扰能力，电脑主机板中的蛇形走线，主要用在一些时钟信号中，如</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">CIClk,AGPClk</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，它的作用有两点：</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">1</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">、阻抗匹配</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman"> 2</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">、滤波电感。对一些重要信号，如</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><BR><FONT face="Times New Roman">INTEL HUB</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">架构中的</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">HUBLink,</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">一共</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">13</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">根，跑</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">233MHz</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，要求必须严格等长，以消除时滞造成的隐患，绕线是唯一的解决办法。一般来讲，蛇形走线的线距</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">&gt;=2</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">倍的线宽。</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">PCI</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">板上的蛇行线就是为了适应</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">PCI 33MHzClock</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">的线长要求。若在一般普通</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 9pt"><A href="http://pcblm.pcclub.pconline.com.cn/"><FONT face="Times New Roman">PCB</FONT><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄</SPAN></SPAN><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>板</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">中，是一个分布参数的</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman"> LC</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">滤波器，还可作为收音机天线的电感线圈，短而窄的蛇形走线可做保险丝等等</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">.</FONT></SPAN></P></div>]]></description>
	    <author><![CDATA[龙人pcb抄板]]></author>
	    <comments>http://copy.pcb.blog.163.com/blog/static/55666570200852111413379</comments>
    <slash:comments>0</slash:comments>
    <guid isPermaLink="true">http://copy.pcb.blog.163.com/blog/static/55666570200852111413379</guid>
    <pubDate>Sat, 21 Jun 2008 11:41:33 +0800</pubDate>
    <dcterms:modified>2008-06-21T11:41:33+08:00</dcterms:modified>
  </item>    
  <item>
  	<title><![CDATA[芯片解密的几种方法]]></title>	
    <link>http://copy.pcb.blog.163.com/blog/static/556665702008521113628944</link>
    <description><![CDATA[<div><P style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">加密方法其实不外以下几种</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">:<BR>1</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">＞</SPAN><SPAN style="FONT-SIZE: 9pt"><FONT face="Times New Roman"> </FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">磨掉型号</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">打上一些闻所未闻的标记</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">同时隐蔵震荡电路及复位电路</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">.<BR></FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">这种方法能起一定作用</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">但并不绝对</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">.</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">因为它对开</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 9pt"><A href="http://www.pcbwork.net/xpjm.asp"><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>芯</SPAN></SPAN><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>片解密</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">的人不起作用</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">.</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">外部环境可以隐藏</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">可硅片上的标志</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">桂片结构却无法隐藏</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">. </FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">这种方法的最高境界就是以裸片邦定</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">不以常规方式出脚</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">故意将</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 9pt"><A href="http://www.pcbinf.com/"><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>芯片</SPAN></SPAN><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>解密者</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">引入歧途</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">.</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">但这种方法难在裸片难找</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">.</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">不用急</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">我司可提供大量不同公司裸片</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">并协助你完成加密工作</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">.<BR>2</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">＞</SPAN><SPAN style="FONT-SIZE: 9pt"><FONT face="Times New Roman"> </FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">烧坏芯片不用资源</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">使人无法完成</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">”</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">读</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">”</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">操作</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">.<BR></FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">这种方法技高一筹</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">使</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 9pt"><A href="http://blog.cechinamag.com/liuminpcb"><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>芯片</SPAN></SPAN><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>解密</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">者麻烦一些</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">. </FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">这种方法常见的有两种</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">.</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">一种烧断邦定线</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">.</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">另一种则为烧坏输出缓存器</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">.</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">若是这样</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">解密者须借助价格昂贵的仪器</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">.</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">因此需增加</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><A href="http://www.pcblab.net/PCB/IC"><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>芯片</SPAN></SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>解密费用</SPAN></SPAN></B></A><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">也变向的增加了解密难度</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">.<BR>3</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">＞</SPAN><SPAN style="FONT-SIZE: 9pt"><FONT face="Times New Roman"> </FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">增加一颗比较难</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 9pt"><A href="http://pcbliumin.blog.bokee.net/"><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>解密的芯片</SPAN></SPAN></A></SPAN></B><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">如</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">CPLD</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">作上加密算法</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">.<BR>&nbsp;&nbsp; </FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">这种方法也挺理想</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">缺点就是增加了开发</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">生产成本</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">.</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">但同时也提高了他人的解密难度和成本</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">.<BR>4</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">＞</SPAN><SPAN style="FONT-SIZE: 9pt"><FONT face="Times New Roman"> </FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">作掩膜</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">属上具有公司特色的代号</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">.<BR></FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">这种方法是最完美的加密方法</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">但价格昂贵</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">.</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">故只有拥有雄厚财力</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">并有远大眼见的人才可使用</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">.<BR>5</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">＞</SPAN><SPAN style="FONT-SIZE: 9pt"><FONT face="Times New Roman"> </FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">作为加密方法</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">我个人认为</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">:</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">芯片制造厂家有很大关系</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">.</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">若</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">:</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">芯片制造厂家不公布</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">IC</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">的读时序</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">那解密者可就得抓破头皮了</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">.</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">这种方法其实有家厂使用了</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">.</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">他生产的芯片内部实际是</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">EPROM,</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">可解密者拿它一点办法都没有</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">因为无法得到</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 9pt"><A href="http://pcbliumin.studentboss.com/"><FONT face="Times New Roman">IC</FONT></A></SPAN></B><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">的读时序</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">.<BR>6</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">＞本公司研究出一种新的加密方法</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">可使廉价单片机几乎无法解密</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">.<BR></FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">以上是本人对加密的一点浅见</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">希望大家指教</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">.</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">留下你的真知灼见</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">龙人计算机深圳分公司的</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 9pt"><A href="http://www.pcbwork.net/xpjm3.asp"><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>芯片</SPAN></SPAN><FONT face="Times New Roman">IC</FONT><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>解密事业部</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">专门为客户提供</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 9pt"><A href="http://wwwpcb.xinwen520.net/"><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>芯片解密</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">、</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 9pt"><A href="http://www.pcb-ic.com/"><FONT face="Times New Roman">IC</FONT><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>解密</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">、单片机解密</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">(MCU</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">解密</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">)</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">和</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 9pt"><A href="http://pcb007.xinwen520.net/"><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>软件破解</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">等服务。详情：</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 9pt"><A href="http://www.icinf.com/"><FONT face="Times New Roman">http://www.icinf.com</FONT></A></SPAN></B><SPAN lang=EN-US style="FONT-SIZE: 9pt"></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">&nbsp;</FONT></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">&nbsp;</FONT></SPAN></P></div>]]></description>
	    <author><![CDATA[龙人pcb抄板]]></author>
	    <comments>http://copy.pcb.blog.163.com/blog/static/556665702008521113628944</comments>
    <slash:comments>0</slash:comments>
    <guid isPermaLink="true">http://copy.pcb.blog.163.com/blog/static/556665702008521113628944</guid>
    <pubDate>Sat, 21 Jun 2008 11:36:28 +0800</pubDate>
    <dcterms:modified>2008-06-21T11:36:28+08:00</dcterms:modified>
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  	<title><![CDATA[pcb设计新手必须掌握的知识]]></title>	
    <link>http://copy.pcb.blog.163.com/blog/static/55666570200842110369435</link>
    <description><![CDATA[<div><P style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: &718;&805;; mso-hansi-font-family: &718;&805;">本文的关键词：</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: &718;&805;"><FONT face="Times New Roman">pcb</FONT></SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: &718;&805;; mso-hansi-font-family: &718;&805;">设计</SPAN></B><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: &718;&805;"><FONT face="Times New Roman"> <B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="COLOR: black"><SPAN style="mso-spacerun: yes">&nbsp;</SPAN>pcb</SPAN></B></FONT></SPAN><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: &718;&805;; mso-hansi-font-family: &718;&805;">抄板</SPAN></B><FONT face="Times New Roman"><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: &718;&805;"> </SPAN></B><SPAN lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: &718;&805;"></SPAN></FONT></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: &718;&805;; mso-hansi-font-family: &718;&805;">在</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: &718;&805;"><A href="http://www.pcbwork.net/pcbsj.asp"><B style="mso-bidi-font-weight: normal"><SPAN style="COLOR: black; TEXT-DECORATION: none; text-underline: none"><FONT face="Times New Roman">pcb</FONT></SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="COLOR: black; FONT-FAMILY: 宋体; TEXT-DECORATION: none; mso-ascii-font-family: &718;&805;; mso-hansi-font-family: &718;&805;; text-underline: none"><SPAN lang=EN-US>设计</SPAN></SPAN></B></A></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: &718;&805;; mso-hansi-font-family: &718;&805;">中，布局是一个重要的环节。布局结果的好坏将直接影响布线的效果，因此可以这样认为，合理的布局是</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: &718;&805;"><A href="http://www.pcbsj.com/"><B style="mso-bidi-font-weight: normal"><SPAN style="COLOR: black; TEXT-DECORATION: none; text-underline: none"><FONT face="Times New Roman">PCB</FONT></SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="COLOR: black; FONT-FAMILY: 宋体; TEXT-DECORATION: none; mso-ascii-font-family: &718;&805;; mso-hansi-font-family: &718;&805;; text-underline: none"><SPAN lang=EN-US>设计</SPAN></SPAN></B></A></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: &718;&805;; mso-hansi-font-family: &718;&805;">成功的第一步。</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: &718;&805;"><BR><FONT face="Times New Roman">&nbsp;</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: &718;&805;; mso-hansi-font-family: &718;&805;">布局的方式分两种，一种是交互式布局，另一种是自动布局，一般是在自动布局的基础上用交互式布局进行调整，在布局时还可根据走线的情况对门电路进行再分配，将两个门电路进行交换，使其成为便于布线的最佳布局。在布局完成后，还可对</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: &718;&805;"><A href="http://pcblr1.blog.hexun.com/"><B style="mso-bidi-font-weight: normal"><SPAN style="COLOR: black; TEXT-DECORATION: none; text-underline: none"><FONT face="Times New Roman">pcb</FONT></SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="COLOR: black; FONT-FAMILY: 宋体; TEXT-DECORATION: none; mso-ascii-font-family: &718;&805;; mso-hansi-font-family: &718;&805;; text-underline: none"><SPAN lang=EN-US>设计</SPAN></SPAN></B></A></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: &718;&805;; mso-hansi-font-family: &718;&805;">文件及有关信息进行返回标注于原理图，使得</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: &718;&805;"><A href="http://www.pcbwork.net/pcbcb.asp"><B style="mso-bidi-font-weight: normal"><SPAN style="COLOR: black; TEXT-DECORATION: none; text-underline: none"><FONT face="Times New Roman">PCB</FONT></SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="COLOR: black; FONT-FAMILY: 宋体; TEXT-DECORATION: none; mso-ascii-font-family: &718;&805;; mso-hansi-font-family: &718;&805;; text-underline: none"><SPAN lang=EN-US>抄板</SPAN></SPAN></B></A></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: &718;&805;; mso-hansi-font-family: &718;&805;">中的有关信息与原理图相一致，以便在今后的建档、更改设计能同步起来</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: &718;&805;"><FONT face="Times New Roman">,&nbsp;</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: &718;&805;; mso-hansi-font-family: &718;&805;">同时对模拟的有关信息进行更新，使得能对电路的电气性能及功能进行板级验证。</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: &718;&805;"><BR></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: &718;&805;; mso-hansi-font-family: &718;&805;">考虑整体美观</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: &718;&805;"><BR></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: &718;&805;; mso-hansi-font-family: &718;&805;">一个产品的成功与否，一是要注重内在质量，二是兼顾整体的美观，两者都较完美才能认为该产品是成功的。</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: &718;&805;"><BR></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: &718;&805;; mso-hansi-font-family: &718;&805;">在一个</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: &718;&805;"><A href="http://www.pcb-ic.com/"><B style="mso-bidi-font-weight: normal"><SPAN style="COLOR: black; TEXT-DECORATION: none; text-underline: none"><FONT face="Times New Roman">PCB</FONT></SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="COLOR: black; FONT-FAMILY: 宋体; TEXT-DECORATION: none; mso-ascii-font-family: &718;&805;; mso-hansi-font-family: &718;&805;; text-underline: none"><SPAN lang=EN-US>抄</SPAN></SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="COLOR: black; FONT-FAMILY: 宋体; TEXT-DECORATION: none; mso-ascii-font-family: &718;&805;; mso-hansi-font-family: &718;&805;; text-underline: none"><SPAN lang=EN-US>板</SPAN></SPAN></B></A></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: &718;&805;; mso-hansi-font-family: &718;&805;">上，元件的布局要求要均衡，疏密有序，不能头重脚轻或一头沉。</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: &718;&805;"><BR></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: &718;&805;; mso-hansi-font-family: &718;&805;">布局的检查</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: &718;&805;"><FONT face="Times New Roman">&nbsp;<BR></FONT><B style="mso-bidi-font-weight: normal"><SPAN style="COLOR: black"><A href="http://pcblr1.blog.sohu.com/"><SPAN lang=EN-US style="COLOR: black; FONT-FAMILY: 宋体; TEXT-DECORATION: none; mso-ascii-font-family: &718;&805;; mso-hansi-font-family: &718;&805;; text-underline: none"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN></B></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: &718;&805;; mso-hansi-font-family: &718;&805;">尺寸是否与加工图纸尺寸相符？能否符合</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: &718;&805;"><A href="http://pcblr1.sohoxiaobao.com/"><B style="mso-bidi-font-weight: normal"><SPAN style="COLOR: black; TEXT-DECORATION: none; text-underline: none"><FONT face="Times New Roman">PCB</FONT></SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="COLOR: black; FONT-FAMILY: 宋体; TEXT-DECORATION: none; mso-ascii-font-family: &718;&805;; mso-hansi-font-family: &718;&805;; text-underline: none"><SPAN lang=EN-US>抄板</SPAN></SPAN></B></A></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: &718;&805;; mso-hansi-font-family: &718;&805;">制造工艺要求？有无定位标记？</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: &718;&805;"><FONT face="Times New Roman">&nbsp;<BR></FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: &718;&805;; mso-hansi-font-family: &718;&805;">元件在二维、三维空间上有无冲突？</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: &718;&805;"><FONT face="Times New Roman">&nbsp;<BR></FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: &718;&805;; mso-hansi-font-family: &718;&805;">元件布局是否疏密有序，排列整齐？是否全部布完？</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: &718;&805;"><FONT face="Times New Roman">&nbsp;<BR></FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: &718;&805;; mso-hansi-font-family: &718;&805;">需经常更换的元件能否方便的更换？插件板插入设备是否方便？</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: &718;&805;"><FONT face="Times New Roman">&nbsp;<BR></FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: &718;&805;; mso-hansi-font-family: &718;&805;">热敏元件与发热元件之间是否有适当的距离？</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: &718;&805;"><FONT face="Times New Roman">&nbsp;<BR></FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: &718;&805;; mso-hansi-font-family: &718;&805;">调整可调元件是否方便？</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: &718;&805;"><FONT face="Times New Roman">&nbsp;<BR></FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: &718;&805;; mso-hansi-font-family: &718;&805;">在需要散热的地方，装了散热器没有？空气流是否通畅？</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: &718;&805;"><FONT face="Times New Roman">&nbsp;<BR></FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: &718;&805;; mso-hansi-font-family: &718;&805;">信号流程是否顺畅且互连最短？</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: &718;&805;"><FONT face="Times New Roman">&nbsp;<BR></FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: &718;&805;; mso-hansi-font-family: &718;&805;">插头、插座等与机械设计是否矛盾？</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: &718;&805;"><FONT face="Times New Roman">&nbsp;<BR></FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: &718;&805;; mso-hansi-font-family: &718;&805;">线路的干扰问题是否有所考虑？</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: &718;&805;"><FONT face="Times New Roman">&nbsp;</FONT></SPAN></P></div>]]></description>
	    <author><![CDATA[龙人pcb抄板]]></author>
	    <comments>http://copy.pcb.blog.163.com/blog/static/55666570200842110369435</comments>
    <slash:comments>0</slash:comments>
    <guid isPermaLink="true">http://copy.pcb.blog.163.com/blog/static/55666570200842110369435</guid>
    <pubDate>Wed, 21 May 2008 10:36:09 +0800</pubDate>
    <dcterms:modified>2008-05-21T10:36:09+08:00</dcterms:modified>
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  	<title><![CDATA[pcb抄板的调试方法]]></title>	
    <link>http://copy.pcb.blog.163.com/blog/static/556665702008421103510219</link>
    <description><![CDATA[<div><P style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 9.05pt; mso-char-indent-count: 1.0"><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">本文的关键词：</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><A href="http://www.pcbwork.net/"><B style="mso-bidi-font-weight: normal"><SPAN style="COLOR: black; TEXT-DECORATION: none; text-underline: none"><FONT face="Times New Roman">pcb</FONT></SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="COLOR: black; FONT-FAMILY: 宋体; TEXT-DECORATION: none; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; text-underline: none"><SPAN lang=EN-US>抄板</SPAN></SPAN></B></A><FONT face="Times New Roman"> </FONT><B style="mso-bidi-font-weight: normal"><SPAN style="COLOR: black"><A href="http://www.pcbwork.net/pcbcb.asp"><SPAN lang=EN-US style="COLOR: black; FONT-FAMILY: 宋体; TEXT-DECORATION: none; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; text-underline: none"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN></B></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 18pt; mso-char-indent-count: 2.0"><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">对于刚拿回来的新</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><A href="http://www.pcb-ic.com/"><B style="mso-bidi-font-weight: normal"><SPAN style="COLOR: black; TEXT-DECORATION: none; text-underline: none"><FONT face="Times New Roman">PCB</FONT></SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="COLOR: black; FONT-FAMILY: 宋体; TEXT-DECORATION: none; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; text-underline: none"><SPAN lang=EN-US>抄板</SPAN></SPAN></B></A></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，我们首先要大概观察一下，板上是否存在问题，例如是否有明显的裂痕，有无短路、开路等现象。如果有必要的话，可以检查一下电源跟地线之间的电阻是否足够大。</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">对于一个新设计的</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"><A href="http://www.dmpcb.cn/"><SPAN lang=EN-US style="COLOR: black; FONT-FAMILY: 宋体; TEXT-DECORATION: none; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; text-underline: none"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，调试起来往往会遇到一些困难，特别是当</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: black"><A href="http://www.pcbwork.net/pcbcb.asp"><SPAN lang=EN-US style="COLOR: black; FONT-FAMILY: 宋体; TEXT-DECORATION: none; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; text-underline: none"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">比较大、元件比较多时，往往无从下手。但如果掌握好一套合理的调试方法，调试起来将会事半功倍。</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt"><A href="http://www.pcbinf.com/"><B style="mso-bidi-font-weight: normal"><SPAN style="COLOR: black; TEXT-DECORATION: none; text-underline: none"><FONT face="Times New Roman">pcb</FONT></SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="COLOR: black; FONT-FAMILY: 宋体; TEXT-DECORATION: none; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; text-underline: none"><SPAN lang=EN-US>抄板</SPAN></SPAN></B></A></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">调试步骤一：</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">对于刚拿回来的新</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><A href="http://pcb007.xinwen520.net/"><B style="mso-bidi-font-weight: normal"><SPAN style="COLOR: black; TEXT-DECORATION: none; text-underline: none"><FONT face="Times New Roman">PCB</FONT></SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="COLOR: black; FONT-FAMILY: 宋体; TEXT-DECORATION: none; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; text-underline: none"><SPAN lang=EN-US>抄板</SPAN></SPAN></B></A></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，我们首先要大概观察一下，板上是否存在问题，例如是否有明显的裂痕，有无短路、开路等现象。如果有必要的话，可以检查一下电源跟地线之间的电阻是否足够大。</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt"><A href="http://blog.sina.com.cn/pcblr1"><B style="mso-bidi-font-weight: normal"><SPAN style="COLOR: black; TEXT-DECORATION: none; text-underline: none"><FONT face="Times New Roman">pcb</FONT></SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="COLOR: black; FONT-FAMILY: 宋体; TEXT-DECORATION: none; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; text-underline: none"><SPAN lang=EN-US>抄板</SPAN></SPAN></B></A></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">调试步骤二：</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">然后就是安装元件了。相互独立的模块，如果您没有把握保证它们工作正常时，最好不要全部都装上，而是一部分一部分的装上（对于比较小的电路，可以一次全部装上），这样容易确定故障范围，免得到时遇到问题时，无从下手。</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">一般来说，可以把电源部分先装好，然后就上电检测电源输出电压是否正常。如果在上电时您没有太大的把握（即使有很大的把握，也建议您加上一个保险丝，以防万一），可考虑使用带限流功能的可调稳压电源。</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">先预设好过流保护电流，然后将稳压电电源的电压值慢慢往上调，并监测输入电流、输入电压以及输出电压。如果往上调的过程中，没有出现过流保护等问题，且输出电压也达到了正常，则说明电源部分</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">OK</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">。反之，则要断开电源，寻找故障点，并重复上述步骤，直到电源正常为止。</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt"><A href="http://blog.tom.com/pcblr1"><B style="mso-bidi-font-weight: normal"><SPAN style="COLOR: black; TEXT-DECORATION: none; text-underline: none"><FONT face="Times New Roman">pcb</FONT></SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="COLOR: black; FONT-FAMILY: 宋体; TEXT-DECORATION: none; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; text-underline: none"><SPAN lang=EN-US>抄板</SPAN></SPAN></B></A></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">调试步骤三：</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">接下来逐渐安装其它模块，每安装好一个模块，就上电测试一下，上电时也是按照上面的步骤，以避免因为设计错误或</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">/</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">和安装错误而导致过流而烧坏元件。</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">寻找故障的办法一般有下面几种：</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">①测量电压法。首先要确认的是各芯片电源引脚的电压是否正常，其次检查各种参考电压是否正常，另外还有各点的工作电压是否正常等。例如，一般的硅三极管导通时，</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">BE</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">结电压在</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">0.7V</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">左右，而</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">CE</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">结电压则在</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">0.3V</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">左右或者更小。如果一个三极管的</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">BE</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">结电压大于</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">0.7V</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">（特殊三极管除外，例如达林顿管等），可能就是</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">BE</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">结就开路。</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">②信号注入法。将信号源加至输入端，然后依次往后测量各点的波形，看是否正常，以找到故障点。有时我们也会用更简单的办法，例如用手握一个镊子，去碰触各级的输入端，看输出端是否有反应，这在音频、视频等放大电路中常使用（但要注意，热底板的电路或者电压高的电路，不能使用此法，否则可能会导致触电）。如果碰前一级没有反应，而碰后一级有反应，则说明问题出在前一级，应重点检查。</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">③当然，还有很多其它的寻找故障点的方法，例如看、听、闻、摸等。“看”就是看元件有无明显的机械损坏，例如破裂、烧黑、变形等；“听”就是听工作声音是否正常，例如一些不该响的东西在响，该响的地方不响或者声音不正常等；“闻”就是检查是否有异味，例如烧焦的味道、电容电解液的味道等，对于一个有经验的电子维修人员来说，对这些气味是很敏感的；“摸”就是用手去试探器件的温度是否正常，例如太热，或者太凉。一些功率器件，工作起来时会发热，如果摸上去是凉的，则基本上可以判断它没有工作起来。但如果不该热的地方热了或者该热的地方太热了，那也是不行的。一般的功率三极管、稳压芯片等，工作在</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">70</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">度以下是完全没问题的。</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">70</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">度大概是怎样的一个概念呢？如果你将手压上去，可以坚持三秒钟以上，就说明温度大概在</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">70</FONT></SPAN><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">度以下（注意要先试探性的去摸，千万别把手烫伤了）。</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">好了，关于调试的问题，我们今天就暂时讲这么多，如果想要了解更多的调试方法和经验，可以去找一些家用电器维修的书来看看，一个好的设计人员，首先应该是一个好的维修人员。</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt"></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt"><FONT face="Times New Roman">&nbsp;</FONT></SPAN></P></div>]]></description>
	    <author><![CDATA[龙人pcb抄板]]></author>
	    <comments>http://copy.pcb.blog.163.com/blog/static/556665702008421103510219</comments>
    <slash:comments>0</slash:comments>
    <guid isPermaLink="true">http://copy.pcb.blog.163.com/blog/static/556665702008421103510219</guid>
    <pubDate>Wed, 21 May 2008 10:35:10 +0800</pubDate>
    <dcterms:modified>2008-05-21T10:35:10+08:00</dcterms:modified>
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  <item>
  	<title><![CDATA[发布PCB抄板工具的DFM附加设备]]></title>	
    <link>http://copy.pcb.blog.163.com/blog/static/55666570200841254123696</link>
    <description><![CDATA[<div><H3 style="MARGIN: 13pt 0cm"><FONT size=5><SPAN lang=EN-US><FONT face="Times New Roman">Sunstone Circuits</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">发布</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">PCB</FONT><A href="http://www.dmpcb.cn/"><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">工具的</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">DFM</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">附加设备</SPAN></FONT></H3>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">本文关键字：</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://www.pcbsj.com/"><FONT face="Times New Roman">PCB</FONT><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>设计</SPAN></SPAN></A></SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">PCB</FONT><A href="http://www.lrpcb.cn/"><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，</SPAN><SPAN lang=EN-US><A href="http://www.pcblab.net/"><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">公司，</SPAN><SPAN lang=EN-US><A href="http://www.pcbinf.com/"><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">软件，深圳</SPAN><SPAN lang=EN-US><A href="http://www.pcb-ic.com/"><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，</SPAN><SPAN lang=EN-US><A href="http://www.pcbwork.net/"><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，</SPAN><SPAN lang=EN-US><A href="http://www.icinf.com/"><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>芯片解密</SPAN></SPAN></A></SPAN></B></P>
<P style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman">&nbsp;</FONT></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0"><SPAN lang=EN-US><FONT face="Times New Roman">PCB</FONT><B style="mso-bidi-font-weight: normal"><A href="http://pcb007.xinwen520.net/"><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></B></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">原型解决方案供应商</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">Sunstone Circuits</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">发布了一项经工厂验证的附加设备</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">,</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">这种设备可安装在</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">CadSoft</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">的</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">EAGLE </FONT><B style="mso-bidi-font-weight: normal"><A href="http://www.pcbinf.com/"><FONT face="Times New Roman">PCB</FONT><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>设计</SPAN></SPAN></A></B></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">工具内，交互提高</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">Sunstone</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">的生产能力。</SPAN><SPAN lang=EN-US><BR><BR></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">　　</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">Sunstone Circuits</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">首席执行官</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">Terry</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">　</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">Heilman</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">说：</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">“</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">这种可制造性抄板（</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">DFM</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">）附加工具，增添了</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">EAGLE PCB</FONT><B style="mso-bidi-font-weight: normal"><A href="http://pcbsky.xinwen520.net/"><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></B></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">软件用户的信心，使他们确定</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">Sunstone</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">能够为其</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">PCB</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">提供可制造性。通过将设计规则检查（</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">DRC</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">）机制载入</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">EAGLE</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，并为</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">Sunstone</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">的</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">EAGLE</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">设计规则机制提供全面补充，</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">Sunstone</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">可确保设计师的作品符合我们公布的产能需求。我们将为</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">EAGLE PCB</FONT><B style="mso-bidi-font-weight: normal"><A href="http://pcbcb.xinwen520.net/"><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></B></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">用户免费提供这种附加设备，而这仅仅是</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">Sunstone</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">力图发展为最便携和最优秀</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">PCB</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">解决方案供应商所采取的另一种途径。作为最杰出的</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">PCB</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">解决方案供应商，</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">Sunstone</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">有效运用了</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">Q2D&amp;trade</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，即报价至交货解决方案。</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">”<BR><BR></FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">　　可制造性设计附加工具用户获得的优势包括：</SPAN><SPAN lang=EN-US><BR><BR></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">　　减少成本：有助于在设计过程中及早避免误差，并最大程度地减少后续更正需求；</SPAN><SPAN lang=EN-US><BR><BR></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">　　节省时间：利用现有规则操作而非要求用户创建自身设计规则，可提高</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">PCB</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">设计速度；</SPAN><SPAN lang=EN-US><BR><BR></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">　　简化工艺：按设计规则循序渐进，可缓解设计工艺难点。</SPAN><SPAN lang=EN-US><BR><BR></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">　　</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">EAGLE PCB</FONT><B style="mso-bidi-font-weight: normal"><A href="http://pcbwork.xinwen520.net/"><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></B></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">软件的美国分销商</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">CadSoft</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">美国总经理</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">Ed Robledo</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">对可制造性设计附加工具备加推崇，他说：</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">“CadSoft</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">的设计规则检查机制可理想地帮助行业领先</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">PCB</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">生产公司，量身定做可制造性</SPAN><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><A href="http://wwwpcb.xinwen520.net/"><SPAN lang=EN-US style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><SPAN lang=EN-US>抄板</SPAN></SPAN></A></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">规则。通过向客户提供经实际验证的正确生产参数，</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">Sunstone</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">可为所有</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">EAGLE</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">用户开辟统一的设计规则检查环境。</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">”</FONT></SPAN></P></div>]]></description>
	    <author><![CDATA[龙人pcb抄板]]></author>
	    <comments>http://copy.pcb.blog.163.com/blog/static/55666570200841254123696</comments>
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    <pubDate>Mon, 12 May 2008 17:41:23 +0800</pubDate>
    <dcterms:modified>2008-05-12T17:41:23+08:00</dcterms:modified>
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