>Here is one way of doing it along those lines: > >http://www.trexon.com/articles/edn_Mosfetdesign.pdf > >Best regards, > >Spehro Pefhany --"it's the network..." "The Journey is the reward" Now, that's ingenious! Using the parts of the power cycle that the other power supplies throw away! This could be the solution to the "power factor crisis" supposedly being caused by all the personal computers and other electronic devices with switching supplies. I can buy "power factor corrected" supplies. You think they do something like this? Barry -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads