Re: white leds

From: Chuck Kuecker (ckuecker@ckent.org)
Date: Mon Sep 01 2003 - 12:30:37 MDT

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    Expensive and somewhat fragile still. Give it another couple years, and you
    may see auto headlights and room lighting using them. They are also pretty
    directional, which is bad for area lighting, and the "white" is the result
    of a phosphor, so it degrades with time more than monocolor LEDS. Once the
    bugs are worked out, they will be very popular.

    One byproduct of this technology could be a lowering of household (lighting
    only?) voltage to 24 V DC or even less, since LEDs work efficiently on a
    couple of volts. Could be a big boon for home safety. Real convenient for
    those running home solar panels...

    Chuck Kuecker

    At 10:54 09/01/2003 -0700, you wrote:

    >Yesterday I bought one of those nifty new white
    >LED headlamps for an upcoming camping trip.
    >Shelly and I went on a night hike up in the
    >hills to try it out. I was so very impressed
    >with how much light three little LEDs
    >can make, while using so very little power.
    >Acoording the the advertisement, they are supposed
    >to run 200 hours on three triple A batteries.
    >
    >Nowthen, it seems a logical extention that white
    >LED lighting should replace all incandescent and
    >flourescent lighting for home use. A good amount
    >of light could be made using only 5 to 10 watts
    >instead of the customary 40-60. The fixtures
    >would be small, long lived and utterly unable
    >to cause a fire.
    >
    >Anyone here up to speed on white LEDs for home
    >lighting use? URL?
    >
    >spike



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