This job is in one of our preferred categories; the kind where asking “why?” is the wrong question. [Berto A.] developed the gadget after observing some power generation by putting a big magnet next to a mechanical relay coil as well as swiftly clicking the relay’s lever. From this humble beginning he developed up the RattleGen, a bicycle spoke driven generator.
To get the most power possible he searched around for a large relay as well as discovered one which was originally indicated for telephone exchanges. He cut the situation open as well as strapped a huge bar magnet to the side of the coil. next he fabricated an arm which will press against the relay’s lever. To that he added a little wheel which is pressed each time a spoke from the bicycle passes by it. This repeated clicking of the relay lever produces a present (and a rattling sound) that is harvested by the joule thief circuit developed on some protoboard. An LED is illuminated, with excess present kept in the capacitor bank. Don’t miss the develop as well as presentation video after the break.