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
Posted by Collin Cunningham |
Feb 1, 2008 02:00 PM
DIY Projects, Electronics |
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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.
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Question regarding the Joule Thief for anyone out there. Do they only work with blue or white LEDs, and if so why?
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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
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