Geistware
Posts: 12946
Joined: 4/9/2002 From: Locust Grove,
GA, USA Status: offline
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If you are using two wall warts, then you have two transformers and the grounds being connected are electrically the same. It should not make a difference. Think of it as the common is connect to the return of the transformer which is connecter to the ground lead. If you ohm them out (with power off) you may find that they are all connected. NOW, if you ran off of negative voltage, I don't think it would work!
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