Re: [Homebrew_PCBs] Re: Cocroft - walton 2004-11-11 by Norman Stewart It will add the driving voltage once for each stage. 120 volts AC in, 1st stage = 120 v; 2nd stage=240v; 3rd stage=360v (not 480v); etc. etc. Current supply is very low, voltage loads down badly with any subtantial load. Norm.