整机产品设计端,L,N 线上的安规防护设计,PLC 信号耦合设计,强烈建议参考下面的线路图,减少因浪涌等原因导致PLC模组损坏。
说明:
图中初次级双向TVS保护管(D1/D2)为必选;
L/N线上PLC信号接入点需要在压敏电阻(RV1)后面;
PLC信号后面需串接两个差模电感(L1/L2)与整机电源做隔离;
T1变压器为1:1变压器;
C1安规电容。
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