[sdiy] Power Supply Trouble

David G. Dixon dixon at interchange.ubc.ca
Wed Apr 1 00:22:12 CEST 2009


I'm in the market for a +/- 15V power supply myself.  The Power One units
seem to be fairly popular.  Are they the ones to buy?

If this thread was done to death before I arrived, I apologize; please let
me know or suggest a link.  Otherwise, I'd love to know what people think
and why.

David G. Dixon
Professor
Department of Materials Engineering
University of British Columbia
309-6350 Stores Road
Vancouver, B.C. V6T 1Z4
Canada
 
Tel 1-604-822-3679
Fax 1-604-822-3619
 
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> -----Original Message-----
> From: synth-diy-bounces at dropmix.xs4all.nl [mailto:synth-diy-
> bounces at dropmix.xs4all.nl] On Behalf Of Scott
> Sent: Tuesday, March 31, 2009 10:47 AM
> To: Tony Rolando
> Cc: synth-diy at dropmix.xs4all.nl
> Subject: RE: [sdiy] Power Supply Trouble
> 
> It is old (used) and has not be recapped.
> I have a few power ones, of various sizes..  I was able to see AC ripple
> on the DC side of one of them, and so replaced the caps.  That fixed that
> issue.
> 
> the one that is in my synth did not show AC on the DC side.  But, the caps
> are the first thing I thought of, too.  I guess I'll just order caps.  It
> definitely won't hurt to replace them.
> 
> If anyone has other ideas, please let me know.
> 
> -----Original Message-----
> From: Tony Rolando [mailto:tony at makenoisemusic.com]
> Sent: Tuesday, March 31, 2009 12:31 PM
> To: Scott
> Cc: synth-diy at dropmix.xs4all.nl
> Subject: Re: [sdiy] Power Supply Trouble
> 
> How old is it? Has it ever been re-capped?
> 
> Tony
> 
> Scott wrote:
> > My power supply droops when my AC power fluctuates. (VCO's lower their
> tune, and LFO's/clocks slow down)  I have a regulated Power One 3 amp
> 15/0/-15 supply.  Shouldn't the regulated supply be able to handle ac
> power fluctuations?
> > I haven't taken out the PS to start testing yet.  Is there anything
> obvious I should check for when I get started?
> >
> > Thanks!
> >
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> >
> >
> 
> 
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