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24V输出300V电压,电路如图1,R1027 1.6K,R1028 680K 画红色斜杠处不接,测试输出电压如图所示2,第二通道是输出300V电压波形,第一通道是SS的波形,板卡有20多块,测试出来4块不正常,请问哪里出了问题呢?请帮忙解答谢谢
图1
图2
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