On Tue, 1 Oct 2002, Morgan Olsson wrote: *>Peter L. Peres wrote: *>>Of course you know that you can use a bipolar as buck 'diode' too. Try it. *>>You need another PNP with E at GND and negative base drive during flyback. *> *>I think this will definitely reach over spec of reverse voltages over *>that transistor during the forward phase. Unless input voltage is 5V or *>less. Yes. -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.