d
>be pretty efficient.  You could put a bunch of LEDs in series across a
>single inductor.
>        Anyone tried anything like this?

They use a technique similar to this (no inductor, no FET) for night flying
model airplanes.  They basically just use the multiple voltage drops to
limit current.  LOTS of LEDs in series.

Andy

==================================================================
Andy Kunz               Life is what we do to prepare for Eternity
------------------------------------------------------------------
andy@rc-hydros.com      http://www.rc-hydros.com     - Race Boats
andy@montanadesign.com  http://www.montanadesign.com - Electronics
==================================================================