[sdiy] synth power supply

[Derek Holzer]

Hi Tony,

well, I am traveling/gigging like crazy with it! So the Power One is out 
for space and weight reasons I guess.

The thing is that Doepfer won't sell you just the toroidal to put in 
your own case for safety reasons. So you have to buy their case as 
well... I thought I could make a case + PS for half the EUR 350 price of 
the Doepfer "suitcase", but maybe not unless I build my own PS from scratch.

best,
d.

Anthony Rolando wrote:
> I spent some time trying to use a Meanwell switching power supply with 
> CGS and other diy modules. I was excited about the size and weight of 
> the switching supply./ /What waste of time. I thought that I had made 
> mistakes in the contruction of the modules. As soon as I hooked them to 
> my linear supply, all was good. EMI all over the place.
>  
> I know they are expensive, but the new doepfer torrodial transformer 
> based supply is awesome. I have a spring reverb mounted in a doepfer 
> suitcase (using the new PS) and the reverb is pretty quiet. The 
> torrodial is lighter and smaller then most other transformers. If space/ 
> weight is a concern, I would def. go with one of these.
>  
> If you are not travelling/ gigging with your system, a used Power One 
> supply is an awesome option. I purchased a 2A power one supply on ebay 
> ($20). I re-capped it and it is very solid for a year now.
>  
> Tony
> 
>  > Date: Thu, 22 Nov 2007 13:17:19 +0100
>  > From: derek at umatic.nl
>  > To: synth-diy at dropmix.xs4all.nl
>  > Subject: [sdiy] synth power supply
>  >
>  > 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
>  >
>  > (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?"
>  > _______________________________________________
>  > Synth-diy mailing list
>  > Synth-diy at dropmix.xs4all.nl
>  > http://dropmix.xs4all.nl/mailman/listinfo/synth-diy
> 
> 
> ------------------------------------------------------------------------
> Your smile counts. The more smiles you share, the more we donate. Join 
> in! <www.windowslive.com/smile?ocid=TXT_TAGLM_Wave2_oprsmilewlhmtagline>

-- 
derek holzer ::: http://www.umatic.nl ::: http://blog.myspace.com/macumbista
---Oblique Strategy # 166:
"Use an unacceptable colour"