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一批焊接了3块板子，一块正负输出都是对的，一块正输出是对的但是负输出是0.3V，还有一个是正负输出都不对。电感不是推荐电感，饱和电流更大，但是我现在把后级电路个断开了，也是不行的。
首先，确认一下3个板子电路板是否为完全一样的，否则可能是焊接的问题
