Original poster: "Eastern Voltage Research Corporation" <dhmccauley-at-easternvoltageresearch-dot-com> Thanks. Also check out the results Steve Ward is getting with the ORIGINAL ISSTC. http://hot-streamer-dot-com/srward16/I_SSTCnew.htm Mine is basically a copy of his design. > Sorry if this is a bit late(been away), but kick -at-SS Dan > > Cheers, > > John > > > > >