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High Efficiency LEDs?

Discussion in 'Electronic Basics' started by Shannon H., Aug 25, 2004.

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  1. Shannon H.

    Shannon H. Guest

    My apologies if the following question is a dumb one, but could someone
    please explain to me if there is any difference between the standard
    LEDs that one might expect to find at Radio Shack and those installed in
    certain newer-model, long-lasting LED-style flashlights, garden lights
    and lanterns?

    I have seen several products in catalogs in recent months which claim
    that because of some new technology, their LEDs not only last 1000,000
    hours, but they also draw less power than other, older LEDs. I did, btw,
    purchase one of those lanterns and I must say that 'm amazd how long one
    set of D cells will run that light... It has a selector switch to choose
    between either 15 or 30 LED brightness and when I put on "low" for a
    little test, it ran for 5 days straight before I finally turned it off
    and it was still going strong.

    High efficiency LEDs? Is that actually the case? And if so, could
    someone tell me specifically where I might be able to purchase them and
    exactly what I should ask for when ordering?

    I'm looking for amber-colored LEDs as opposed to the white ones-- if
    that makes any difference. I'm hoping to replace the LEDs in the outdoor
    solar powered lamp posts that line my driveway. They currently yield
    approximately seven hours of run time on one day's charge. I'm just
    afraid that switching to another brand (type) of LED would eat up too
    much power and make the light last fewer hours during the night.

    Please feel free to email me with any information or advice that you
    think may be helpful-- it would be greatly appreciated.

    Thank you,

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