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电路如下图，输入端是电池，输出正端噪声正常，负端较大，加大电容可以改善，但输入噪声10mV.没法去除，影响其他电路供电。加电感左侧小但右侧还是大
Hi
也就是同一个电池给多个负载供电，如果是有直接供电的，10mV噪声都敏感的话，可以在DC/DC输入增加LC， 构成CLC.
