At 03:48 PM 9/28/2004, Bob Blick wrote: >>>On 28 Sep 2004 at 13:45, Dave VanHorn wrote: >>> >>>> One interesting trick for boost or buck switchers, is to use a magnet >>>> to >>>> bias the core, and roughly double the current the core can take without >>>> saturation. A few thousand hours at 100kHz is a lot of pulses. > >Width coils in CRT-based monitors have used this trick, too. Kind of implies that as long as you stay below the magnetizing energy, and the curie point, you'll be ok long term. _______________________________________________ http://www.piclist.com View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist