High-output, low-duty cycle LED strobe circuit

mj · 2009-05-04T04:21:54+00:00

I'm looking for ideas on how to make an LED flash so brightly at a lowduty cycle that it's reasonably bright--maybe even close to what itwould be if it were on DC.I'm building a project where I need to flash white LEDs very brightly30-50 times a second at about a 0.4% duty cycle. (I'm strobing aspinning disk, and want to freeze images near the LED--too high a dutycycle, and the image blurs.) 0.4% is not much time for an LED to beon. I've heard that you can drive LEDs to up to 10x their normalforward current without damage (though I guess lifetime is shortened)if you keep duty cycle to

May 04, 2009 61 Replies

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<castlebravo242 17 years ago

Mechanical color video display as done CA 1900. disk with holes and color filters.

Bob

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Jon Kirwan 17 years ago

I thought there might be some possibilities in varying the choice path of a fixed set of frames. And I hope he gets some fun out of the work he's doing.

Add some helpful ideas.

Jon

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