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
Born, drew a lot, made video, made music on 4-track, then computer, more songwriting, met future wife, went to art school for video major, made websites, toured in a band, worked as web media tech, discovered electronics, taught myself electronics, blogged about DIY electronics, made web videos about electronics and made music for them … and I still do!
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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
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