power bodging

[turing]

right, i've nearly finished a rather baroque multipedal, consisting of a valve stage and a load of synth type filters, and they all have different power requirements.
+/-15 volts, +/-9, and 12 volt ac to be exact.
i was thinking/fervently hoping that i'd be able to cascade a couple of ggg bipolar power boards off the mains input, but then have another seperate feed for the 12v ac transformer.
the thing is, i haven't tried anything beyond 9v dc before, and was wondering if this rather crude method will be a problem in terms of 'drain' or 'load' or some such staple of power that i've never got to grips with.
any advice/stern warnings would be much appreciated.

[Paul Perry (Frostwave)]

OK! here is the *BIG WARNING*:
when all this stuff is connected together, so will all the separate power supply earths.Just be sure that won't be a problem for you!! (I can't say anything specific without seeing all the circuits).

On the bright side, whenever there is a setup of a couple of pedals, a mixer, an amp and so on... well, you have probably got at least half a dozen different transformers there & all works just fine.

All the bipolar synth circuits that I have seen, would work perfectly well with the GGG power supply design. Just connect the earths together of hte two systems.