[sdiy] More ground questions

Ingo Debus debus at cityweb.de
Fri Aug 2 15:46:12 CEST 2002


Scott Stites wrote:
> 
> If you are implementing a clean ground/dirty ground
> system, would one use four pin connector cables
> radiating out from the power supply to each module in
> parallel, with two pins carrying the +/- voltage and
> two pins carrying 'clean' and 'dirty' grounds?

In most cases you'll have bypass caps across both the clean and dirty loads. If 
there's only one supply line (for each polarity), these caps will short both 
ground lines together AC-wise. So then it doesn't help much having two ground lines.

Ingo





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