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滤波电路造成运放供电电源异常



附件所示为运放滤波电路,搭建完毕之后发现运放的-2V供电电压只有-300mV左右了,随后将滤波电路全部取出,只保留反相放大部分,供电恢复正常。测试表明只要焊接电感L13便会引起-2V电源异常,请大虾们帮忙分析解决一下!

注:-2V由TPS7A3001输出