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AMC1100仿真问题

Other Parts Discussed in Thread: AMC1100, LM358

    我用TINA仿真了个电路,前面通过AMC1100采样电阻两端电压值,在经过差分转单端输出电路转成单端输出,然后通过一个加法器给信号加一个直流偏置,存在以下疑问:第一个图中最后加法电路部分的运放是双电源供电的,最后结果不对。第二张图把最后的运放改成单电源供电结果就对了,不太清楚为什么。