A simple 12V to 6V isolated supply can be done easily done by a push-pull converter. Since it is low power, a simple ring core based transformer can do it. There is no need to regulate it. A simple linear post regulator can regulate the voltage in the secondary side. Regards, Xiaofan On 10/1/05, Philip Pemberton wrote: > In message <433D9D63.9040306@luxtron.com> > David Minkler wrote: > > > Is this a one up (I'm guessing) or a cost sensitive multi-bazillion unit > > project? > > A one off. > > > Is size important to you? > > Not really, within reason. It would be nice if I could keep the weight down > to around a kilo or so excluding case and batteries. > > > How much current? > > 6V at 300mA minimum for the heater, probably about 400mA max. > > > Do you care what > > frequency or would you want to rectify and regulate? > > AC or DC is fine, frequency isn't really important. The heater is basically a > glorified 6V lightbulb... > > -- > Phil. | Acorn RiscPC600 SA220 64MB+6GB 100baseT > philpem@philpem.me.uk | Athlon64 3200+ A8VDeluxe R2 512MB+100GB > http://www.philpem.me.uk/ | Panasonic CF-25 Mk.2 Toughbook > ... "Very Bad Idea" is quite possibly a registered trademark of Microsoft... > -- > http://www.piclist.com PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist > -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist