Windbelt Micro Power Generator built from Hard Drive Voice Coil

Tool Using Animal has built a few interesting Windbelt Micro Power Generators that use a Hard Drive Voice Coil as the generating coil. His first version can also be found here. I was pleasantly surprised to stumble across the fact that our LEDs were used in the project! The unit is based on Shawn Frayne’s work.

"The video shows it in operation, careful tuning of the belt tension causes the the voice coil to resonate, that’s a good thing. Measured power output is 1.5 Volts AC with a short circuit current of 20 ma. The leads from the coil are attached to two LEDs wired in parallel with reverse polarities."

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