[sdiy] Buffering 0V when using a pot as a voltage divider?
neil.johnson97 at ntlworld.com
Thu Jun 30 00:22:09 CEST 2011
> If ground isn't stiff, then it isn't ground! Every circuit design relies on
> the fact that ground is ground, no matter what. The only issue might be
> dumping too much current down too narrow of a trace and generating a small
> voltage at the front end, but this is a layout issue, not a ground issue.
Ah, that Canadian humour again!
Reality, meanwhile, has it that "ground" can mean different things to
different people, and to different circuits. For example:
- analogue ground
- digital ground
- power ground
- quiet/signal ground
Some more info here:
Oh, and layout issues are but one aspect. Grounding is a complex
subject in its own right.
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