This is a multi-part message in MIME format. ------=_NextPart_000_0002_01C3D599.43C9FF50 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Bob Japundza wrote: > I am looking for some ideas on building a 14v to 28v dc-dc converter. The > device I'm wanting to power is a 28vdc radio that at peak current will draw > 12a. I've seen some schematics for lower output circuits, but none that > will do 12a. Any ideas? Some PICs could do the job. (Enhanced PWM Mode, PROGRAMMABLE DEADBAND DELAY and all). Load - rewinded 350W PC PSU transformer (or 200W doubled). For feedback you may use zener diode and optocoupler. RF noise is a big issue.=20 Hope MCHP's site has some reference design for this app. Good Luck, Mike.=20 -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! 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