[sdiy] Powersupply question

[Mikael Mørup]

Hi list.

I'm planning on building a bench power supply for SDIY work,
i'm tired of running a long cable out of the back of the
enclosure of my synth for testing modules under
construction.

I would like the new supply to have both +/- 12V, +/- 15V
and +5V to cover all bases.

Can i do this with one transformer and rectifier and just
parallel the regulators after the rectifier ?

Also most designs looks something like transformer ->
rectifier bridge -> large bypass caps -> small bypass caps
-> regulators -> more small bypass caps.

Can i use the same bypass caps for 3 sets of regulators, so
it's just the regulators (and the caps after them) that are
paralleld or must i copy the whole chain (after the
rectifier) for each voltage ?

Thanks

Mikael