[sdiy] +15 -15 volts from 9volt dc power supply?

[Milo Barrowclough]

hi everybody
im trying to get+15 -15 volts for cheap to power my diy synth modules. Is it possibe to convert 9 volts dc (from a regular plug-in power supply) to a dual voltage +15 -15 volts? Surely it must be possible because the roland sh-101 uses a 9v dc power supply (or 9v dc from batteries). this must be converted to +15-15 volts somehow for powering the cem3340.
. I'd like to know how this conversion is acheived. +12-12volts would be ok as well
Thanks  

		
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