[sdiy] Noisy transformers and faraday cages

[Antti Huovilainen]

On Fri, 11 May 2007, John Mahoney wrote:

>> The best method really is to
>> find some way of keeping the audio away from the transformer.
>
> Absolutely. But when you can't, at least there are options.
>
> There have been discussions on the dotcom modular list concerning certain 
> modules that need to be kept away from the power supply -- I forget which, 
> maybe it's the VCA, in particular? -- resulting in compromised module

This probably depends largely on the module pcb layout and orientation. 
It's a good idea to read the documents at www.ax84.com regarding grounding 
and interference. Even though the site is about tube guitar amps, the same 
solutions work at least partially for synths (and with typical gains of 
10000x or more, you need careful attention to minimizing ground loops and 
noise).

Antti

"No boom today. Boom tomorrow. There's always a boom tomorrow"
   -- Lt. Cmdr. Ivanova