Improved Joule Thief Circuit

Published on 2011-05-21 by Mark VandeWettering

While surfing for more LED information, I found this rather nifty little circuit on Electronic Design’s website. It’s a little Joule Thief-like circuit, but with enhanced efficiency (~80%) and it can drive white LEDs with rather large forward voltage drops. Archived for later….

Single Alkaline Battery Drives White LED.