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[Others] I was wondering if a PCB must always have a single common ground.

I want to put in my PCB (two layers) an H-bridge motor drive that will control a high current motor (like several amps), that will be supplied by a separate power supply. Since it's a high current...
Ranking Name Answers
1 PCBWay Team 9
2 Xiaoyang Ma 1
3 Engineer 1
4 Christian Davies 1