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基于OPA656的互阻抗放大器和无限多增益负反馈低通滤波器的问题

Other Parts Discussed in Thread: LM337, LM1117, TPS5430

如何去除噪声,只放大有用信号? 示波器图中:通道1为互阻抗放大电路信号,通道2为无限多增益低通滤波器输出信号