From the MAKE Flickr photo pool:
Member Garagemonkeysan brought a more lovable look and feel to the popular joule thief project. The seemingly depleted battery is held in place by 2 magnets – nice technique! He’s also got a great instructable up as well.
Cat burglar joule thief on Flickr-Link
Cat burglar joule thief on Instructables –Link
Related:
Make a Joule Thief – Weekend Projects Video Podcast –Link
The Joule Thief –Link
6 thoughts on “A cuddlier joule thief”
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This is a comment for collin about his joule thief. Thats a nice lookin project. BUT, why all the parts? I have piddled with the circuit and low parts count was the keystone of the circuit. I put one togather out of parts I robbed from an old circuit board and wound the coil from telephone wire on a power supply toroid. And when I put it on a perf board it’s smaller and pulls the same or a little less current. I’m not slamming ya, I just want to know what you know that I don’t.
Question regarding the Joule Thief for anyone out there. Do they only work with blue or white LEDs, and if so why?
they are just the colors that are “in” right now, different leds need different voltages and mA but with the right resistor any should work