Original poster: "by way of Terry Fritz <teslalist-at-qwest-dot-net>" <dhmccauley-at-spacecatlighting-dot-com> Exactly what it says. A filament transformer with a very large amount of HV isolation. Dan > http://cgi.ebay-dot-com/ws/eBayISAPI.dll?ViewItem&item=3029990603&category=4675 > > hello all > do you fellas know what this is? > > thanks > read you later > Josh > >