[sdiy] Why dual grounds?

[Paul Perry]

As close to the power supply as possible.
So there is as little 'ground' in common as possible.

Another thing to read about in grounding , is "star grounding".
Plenty of references on the net for this ;D

paul perry Melbourne Australia

----- Original Message ----- 
From: "David Ingebretsen" > Won't these two grounds eventually have to be 
connected together though? I
> guess that's my main question. I can layout the PCB with separate grounds,
> I'm just baffled as to where/when these two grounds touch each other.
>