[sdiy] power supplies

[gregory zifcak]

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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