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三相有源滤波器（三相PFC），三相三线电源输入，如何通过硬件检测出相电压送给MCU、
您好，
下面参考设计可以测三相电压：
采用全差分隔离放大器的隔离式电流与电压测量参考设计 https://www.ti.com.cn/tool/cn/TIDA-00555
