[sdiy] synth power supply

[Matthias.Herrmann at jeppesen.com]

synth-diy-bounces at dropmix.xs4all.nl wrote on 11/22/2007 01:17:19 PM:
> New thread for a slightly different question, related to how much EMI 
> can a power supply give.
> 
> I'd like to build a new Doepfer case for less than the EUR 350 they 
> charge for a new one. And the DIY power supply kit they provide uses a 
> 15VAC 2.5A external wall wart which then gets rectified and regulated by 

> their DIY PS unit in the case, which I would like to avoid unless 
> necessary. I'd rather not mess with 220V myself, so I was looking at the 

> following power supply:
> 
> http://tinyurl.com/2n3vmk
> 

you'll get a power one for almost the same price, so why going for a 
switching PSU?

BTW you would have to connect this switching PSU to the mains anyway, 
using a fuse, switch, filter and that stuff...

this is how built mine:
http://www.modular.fonik.de/Page24.html

cheers,
matthias







> (Sorry, German only...)
> 
> Mouser:
> 
> http://www.mouser.com/search/refine.aspx?Ntt=552-PSA-60-301
> 
> But I have no idea how much EMI this might introduce into a small flight 

> case with modules mounted next to the PS. Doepfer use a very large ring 
> transformer which they say is quite clean. How would a PS like this 
> stack up against theirs?
> 
> What other options would people recommend, keeping in mind that I don't 
> feel "qualified" to wire 220V?
> 
> best,
> Derek
> 
> -- 
> derek holzer ::: http://www.umatic.nl ::: 
http://blog.myspace.com/macumbista
> ---Oblique Strategy # 84:
> "How would you have done it?"
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