上图是我根据实物电路(一个30W的LED驱动电源)随手描绘的初级部分电路,描到这的时候我就懵了! 我确定这部分电路是给PWM芯片供电的电路.我搞不明白的是这个Q2和D11(15V稳压二极管)在这能正常工作吗?我反复检查了几十遍并用万用表测量了PCB板的布线,我确定我没有描错!Q2的型号是S8050. 如果说这个电路有问题,那设计这个电源的工程师怎么能犯这种错误?如果这样是对的,它起什么作用?我是个菜鸟,所以恳请各位大师级给我指明方向!
求真相:是我想得太复杂还是我真不懂?


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2015/12/08 16:14:35
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2015/12/08 16:16:37
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2016/03/11 14:38:47
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2016/03/15 09:14:05
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