[sdiy] power supplies

[harrybissell]

Elpac makes a +/-15V wall wart... I believe that Newark electronics carries them

They were about $45 (us) iirc.  I bought one for the Chris MacDonald
"MiniModular"

H^) harry

gregory zifcak wrote:

> hi all,
> i have a tama techstar that runs on +/- 15v. i am only using one of the
> modules and trying to figure out how to recase it into something smaller
> than the 10"x16" case it's currently in. my problem is, the power supply is
> huge. i would love to be able to use a wall wart instead. how would i go
> about converting unipolar (terminology?) dc to bipolar? would i need to
> start with +30 volts dc in order to convert to +/-15? alternatively, does
> anyone know if there's such a thing as a bipolar wall wart? lastly, i am not
> using any of the - volt functions of the synth parameters (- env, etc), does
> this mean i might be able to run just +15v? i wouldn't just disconnect (or
> ground) the board negative would i?
> thanks for any suggestions.
> greg
>
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