Believe it or not as I was driving around this morning doing an errand I came across a discarded Sanyo microwave. I took it home, removed the transformer, cut off the high voltage winding and wound on 25 turns of #12 wire that I stripped out of a 15' scrap of Romex that was laying around. At 1V per winding, sure enough I got 25V on the secondary. It was almost too simple and I started wondering how much current I would be able to draw from the secondary without melting something. After seaching the net for a while I found two articles that might be of interest to others regarding power supply design. One is on transformers and the other on linear power supplies. (Both are from the same audio site.)
Chris
Transformers Linear power supplies