A reasonable size generator (a dinner plate size) might be able to light a single LED dimly when it is spinning very fast. It will need a lot of work to keep it spinning fast. The coils have resistance so they lose power by making heat.
Cotowar:
To make it in simpler terms, your idea seems to hang on the idea that a step up transformer increases power, it does not, it just changes the voltage but the total power transferred is always less then unity.
Lefty
Bryan on this forum made his wind gererator from the motor of a washing machine. It works very well.I don't know; there seems to be a fairly large community of people building these things, especially in DIY wind generators.
Many "shake-lights" cheat and hide a little battery inside. It lights a few LEDs dimmly. I have never seen a bright shake-light and the light doesn't last long.if the power output is so very, very low, then how do you explain the operation of hand-held "shakeable" LED flashlights? all that's doing is shaking a (small) magnet through a coil (not particularly fast either, human shaking speed), and a few seconds of shaking will light several LEDs quite brightly for a considerable amount of time.
We use cookies and similar technologies for the following purposes:
Do you accept cookies and these technologies?
We use cookies and similar technologies for the following purposes:
Do you accept cookies and these technologies?