[sdiy] Wallwarts and ground?

[Kyle Stephens]

There's a page for this on Ray's site:

http://www.musicfromouterspace.com/analogsynth/WALLWARTSUPPLY/WALLWARTSUPPLY.php

Some math (+9 + -9 = 0), wiring, and caution will get you where you need to be.


_Kyle

--- On Sat, 3/21/09, James R. Coplin <james at ticalun.net> wrote:

> From: James R. Coplin <james at ticalun.net>
> Subject: [sdiy] Wallwarts and ground?
> To: "'SDIY'" <synth-diy at dropmix.xs4all.nl>
> Date: Saturday, March 21, 2009, 9:24 AM
> So, I’m helping a friend finish up
> his MFOS Sound Lab project and I want to run it off of a 9v
> wall wart instead of batteries.  The power supply
> delivers +/-9v but no dedicated ground.  I guess I
> never thought about it as I always just use the power supply
> for my modular so voltage and ground paths are always
> there.  What do I do to provide a ground with the
> wallwart supply?
> 
> James R. Coplin
> 
> 
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