Don’t you wish you could charge your cell-phone anywhere outdoors? A human-powered hand-cranked charger is a good way to do it.
Read video article here: http://www.electroboom.com/?p=704
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Video of Full Bridge Rectifier:
https://www.youtube.com/watch?v=jhvrfyjtOgU
Video of Measuring Eye Resistance:
https://www.youtube.com/watch?v=sI5Ftm1-jik
By: Mehdi Sadaghdar
