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请问用430上的ADC怎么采样交流信号，有相关的硬件参考设计原理图提供吗？？
你的交流电是多大电压是多大？
一般都要通过信号调理电路到可以采样的信号范围
交流信号分压后，交流信号的范围在0~500mv
可以用3~6倍放大电路，放大信号后进行采样
