Power Supplies?

[Matthew S. Padden]

Hi..

Steve wrote:

>
>What are well-regarded power supplies for synth modules?  I currently use 
>a homebrew +-15v supply built up from some 7815 and 7915s and I'd like to 
>start using something better.  This could make the whole system more 
>stable maybe.  How much have people found the power supply to be a factor 
>in modular synth performance? 
>

My long term plan is to use a supply like the one featured in the Digisound 
system; +/-15V using 723 regulators, precision trimmers, series pass 
transistors for plenty of current and output protection against excessive 
voltage and/or current. At the moment I'm using either a pair of bench 
supplies, or a huge old linear open-frame supply which has all the 
protection mentioned above.

I remember someone saying that 78xx/79xx PSUs introduced too much 
noise/drift into the supply rails for serious use; is this true?
--
Matthew S. Padden
Computer Music Research Group
Room M2/08, Music Dept.
Huddersfield University
Queensgate
Huddersfield
England HD1 3DH
p: +44 1484 422288 x2402
f: +44 1484 472656
e: mattp at mindless.com
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