| 我输出的波形频率为5.45KHZ左右 但是为什么波形会被一个工频信号调制了额?我用的是同轴线接的,地线都是接触完好的。。我只要把电路板动几下,波形又正常了,缩小分辨率,发现没有了工频信号。。但是很难做到。一不小心就由被调制了,请问这是什么原因呢?真心求解答T.T 急急急!!! |
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