> Personally I'd grab one of those 400W+ 36 volt power supplies off > ebay to give you a decent DC supply (~$30 each) Yes, I have thought about the NZ second-hand market (US is a little bit distant). But that won't reduce the pile of transformers and rectifiers sitting around here, which is part of the exercise. A few projects lately have pushed me into areas I normally wouldn't dabble (get my fingers burned ?) in, and I'm getting the hang of this learning-new-stuff > Then make up a set of switchmode stepdown modules that run > in parallel off that Switchmode is certainly one thing I'll be adding, but I was thinking up, not down. I've enough linears to cover stepdown, and they are simple. And there > For extra credit make each supply isolated ;-> Hmmm. Wind my own transformers eh ? What could possibligh go wrong..... -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist