Kingston
Well-known member
I have a big bunch of stomp boxes and would like a complete PSU solution for powering these. I've have seen how the big boys and all guitar effects DIY sites are doing it and it's simple, no problem. At its most complex just a preregulated ~12VDC going to a bunch of separate 9VDC regulators fanning out to each stomp. Still very cheap.
I foresee one problem: The common ground reference shared between all effects finally entering either guitar amp or some preamp DI input.
Which finally brings me to the question: is it possible to build a PSU that has a battery-like complete "galvanic isolation" from all shared grounds. I realise a battery doesn't actually have any isolation from the grounds of a shared system, but at least it in no way propagates ground loops, and allows an isolated floating section.
This is purely theoretical musing, it might be expensive, unnecessary and overkill considering the problem. But inquiring minds want to know.
Also there might be some incredibly easy hack I've overlooked to solve this. Feel free to point out.
Thanks,
Mike
I foresee one problem: The common ground reference shared between all effects finally entering either guitar amp or some preamp DI input.
Which finally brings me to the question: is it possible to build a PSU that has a battery-like complete "galvanic isolation" from all shared grounds. I realise a battery doesn't actually have any isolation from the grounds of a shared system, but at least it in no way propagates ground loops, and allows an isolated floating section.
This is purely theoretical musing, it might be expensive, unnecessary and overkill considering the problem. But inquiring minds want to know.
Also there might be some incredibly easy hack I've overlooked to solve this. Feel free to point out.
Thanks,
Mike