采集条件:市电220V ; 电流 4-18A(电机电流)
运放输入:电流和电压互感器,互感器输出电流0-5mA
通过运放输出0-3.3V信号
求教参考电路和推荐芯片
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采集条件:市电220V ; 电流 4-18A(电机电流)
运放输入:电流和电压互感器,互感器输出电流0-5mA
通过运放输出0-3.3V信号
求教参考电路和推荐芯片