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问候,
我正在投影一个具有可变输出电容的心电图测试设备,我正在考虑使用电容器乘法器和/或数字电位计来模拟并联电容(皮肤)的变化, 我有两个问题,系统似乎不稳定,在较高频率下有一些峰值,电路似乎有电压增益。 我还需要模拟串联电容,我该怎么做? 最好使用多个电容器和模拟多路复用器? 还是有更好的解决方案?