如下图所示,当输入为Vpp=600mV,周期为1KHz的正弦信号时,在8.68K电阻靠接同相输入端侧使用示波器测量观察不到信号,但是在l8.68K电阻另一侧有电压Vpp=600mV。这是出了什么问题。
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