Improved Joule Thief Circuit

May 20, 2011 | electronics | 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.


Comment from Watson
Time 5/21/2011 at 8:51 pm

See my blog for details about this circuit.

Comment from MikeK
Time 5/19/2013 at 5:18 pm

The ED link is bad, here’s the current one:

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