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www.eeworm.com/read/342796/11998807
pdf pcb设计入门.pdf
www.eeworm.com/read/150473/12291163
mht pcb布线设计（六）.mht
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mht pcb布线设计（一）.mht
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mht pcb布线设计（三）.mht
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mht pcb布线设计（四）.mht
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mht pcb布线设计（五）.mht
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mht pcb布线设计（二）.mht
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doc pcb设计与布线.doc
www.eeworm.com/read/207451/15270813
pdf pcb设计规范.pdf
www.eeworm.com/read/5049/42901
txt pcb设计学习贴.txt
<mark>PCB设计</mark>学习贴(1) 发布时间：2005-06-02 作者： collin
1、怎样通过安排迭层来减少EMI问题？
首先，EMI要从系统考虑，单凭PCB无法解决问题。层叠对EMI来讲，我认为主要是提供信号最短回流路径，减小耦合面积，抑制差模干扰。另外地层与电源层紧耦合，适当比电源层外延，对抑制共模干扰有好处。
2、为何要铺铜？
一般铺铜有几个方面原因。１，EMC.对于大面积 ...