AP0101 Polygon Pours and Copper Regions，很好的学习资料。

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Polygon Pours Copper Regions This application note looks at using polygon pours to create regions of copper on a PCB It covers such topics as placing and modifying polygon pours setting properties controlling the clearance using design rules and repouring Summary Application Note AP0101 v24 December 6 2007 A copper pour on a signal layer is a common part of a PCB design This may be a hatched ground pour on an analog design a solid power supply pour for carrying heavy current......