如图所示电路,输入0V时跟随器输出有130mV左右的电压。断开R2的时候测量跟随器输出电压正常是0V。增大R2和R3阻值跟随器的输出电压有降低。
把LM324换成OPA4277时跟随器的输出有近400mV。增大R2 R3阻值的作用也不明显。
没想通是哪里的问题,求各位指教
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