Re: [sdiy] ground distribution

[Roman]

They are separate untill they reach the power supply, or rather star ground point in the power supply. So you should keep them separate all the way at least to the power distribution board.
I think most (or some) of the modules available have only one ground even if there are 2 GND wires, so in that case you don't have anything to improve with separate grounds.
The idea is to keep the spikes caused by switching modules (say, square LFO driving a LED) go into audio signal and disturbing it. Keeping all grounds connecting only in one point assures that any ground current will not flow in other ground leads.

hope that helps

This topic has been done here a lot ant many great ideas came up. Try SDIY archive.

Roman

---- Wiadomość Oryginalna ----
Od: Pat Kammerer <spivkurl at wearerecords.com>
Do: sdiy <synth-diy at dropmix.xs4all.nl>
Data: Sat, 23 Oct 2004 23:29:47 -0500
Temat: [sdiy] ground distribution

>Hi,
>
>I am designing a new power supply for some modules, and had a question about
>something I've only heard a bit about.
>
>It seems I need totally seperate power ground return and signal ground.  I
>don't know if I'm using the correct terms here.  Aren't these essentially
>the same thing, I mean once they hit the power supply, don't they go to the
>same place?  This is the main thing that I don't quite understand in
>relation to modular power supplies.
>
>Thanks for your help again!
>Pat
>
>