用opa847焊了一个同相比例放大电路,调节滑阻时发现输出波形没有被放大,反而直流偏置却在不断变化,频率竟然也在变,不知道是怎么回事?
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用opa847焊了一个同相比例放大电路,调节滑阻时发现输出波形没有被放大,反而直流偏置却在不断变化,频率竟然也在变,不知道是怎么回事?