最近做了一个3K的带通滤波器,电路图如上,但是在输入接地的情况下,居然产生3K左右的正弦波!!会是什么原因的?
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最近做了一个3K的带通滤波器,电路图如上,但是在输入接地的情况下,居然产生3K左右的正弦波!!会是什么原因的?