High voltage slip ring is also called high voltage slip ring,high voltage resistance slip ring, high voltage collector ring, high voltage convergence ring and so on. High voltage usually refers to the alternating curred by the slip ring, and the voltage to the ground exceeds the conventional 380V AC/DC path. High Voltage Slip Ring,Rotating Electrical Connector Amazon,4 Wire Slip Ring,Collector Ring Assembly Dongguan Oubaibo Technology Co., Ltd. , https://www.sliproubo.com
Photocoupler 
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