using a coil and magnet to power an LED

Mike Pinch · 2006-02-26T22:35:01+00:00

Hi,I am interested in using a coil and a moving magnet to briefly light up an LED. I have only a basic understanding of electronics.Does anyone have any advice on what parts or circuit I would use to accomplish this?Thanks,MikeSeattle

Feb 26, 2006 22 Replies

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Gerhard 20 years ago

Have a look at this site

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"Batteryless Bicycle Flashing Light System" "A Non-Friction Bicycle Dynamo (Generator)" Kits available from as low as 4(UK Pound).

Their marketing hype wording was drafted by a lawyer, no friction, but there must be a drag :-)

While on the topic, see two related and intersting bicycle light sites

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Gerhard v d Berg CSIR

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HangingJester 20 years ago

And a simple pressure operated switch.

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Anna Banana 20 years ago

Keep in mind that it is change in magnetic flux density that induces the most currents, not merely moving the coil and field relative to each other. Perhaps this means keeping your magnet outside the coil, but it could be argued so many ways.. best to experiment in this case.

Anna

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