On 6/3/2012 4:21 PM, David Stinson wrote: > non-isolated, voltage quadrupler I'm sure everyone knows about isolation transformers, but in case anyone isn't aware - the Triad N-68X which is rated at 50VA is under $12.00 from Mouser. It's also good for small low B+ supplies. A real bargain IMHO. 73, Bob W9RAN