LEDs bad? [RE-wrenches]
Drake Chamberlin
Drake.Chamberlin at redwoodalliance.org
Wed Dec 19 16:34:48 PST 2007
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I've used them since they became available. I changed all my other
flashlights over to LED as well. My old 2 D cell Mag Light is like a
torch. An old head lamp that takes 3 AA batteries stays bright,
seemingly forever. The 2 AA Mini Mag that I carry in my tool belt
lights up an entire room. I can put a 3 AAA head lamp in my pocket
or pouch, and barely know it is there.
Drake
At 09:05 PM 12/18/2007, you wrote:
>How many other wrenches use the little LED headband lamps? We were
>given some by a client as a gift and within the space of about 2
>weeks they rose to the top of our list of essential
>gear. Incredibly handy for working inside power rooms and power
>panels, even in relatively good light conditions. Way better in
>many cases than flashlights and troublelights consuming a lot more
>power, often avoiding generator running. We don't go anywhere
>without them anymore.
>
>John Raynes
>RE Solar
>Torrey UT
>
>At 06:37 PM 12/18/2007 -0800, you wrote:
>
>LEDs may represent one of the most significant electronic technologies that
>we have seen in the past 50 years. No exaggeration.
>
>First they are capable of being used in both the illumination as well as
>indication markets. There _is_ a difference: think of the difference between
>a head light vs a tail light.
>
>Second, they are among the most efficient light sources known (watts in vs
>lumens out), and this includes CFLs.
>
>Third, they come in a variety of colors, red, amber, green, blue, violet as
>well as cool and warm white.
>
>Fourth, because they have very short time constants, they can be strobed for
>even higher effective efficiency.
>
>Fifth, they have truly mind boggling lifetimes, tens of years
>
>Sixth, being solid states devices, they are much more rugged than CFLs and
>of course incandescents.
>
>Pay attention to the occasional "bad news" of course (rust from the inside
>out?!), but LEDs are simply going to take over virtually every indication
>and illumination market there is on the planet.
>
>It will be fun to watch each illumination and indication application: your
>entire car/truck/boat/plane, every home appliance, all industrial and
>residential lighting, flashlights, LCD screen backlighting, and perhaps
>eventually stadium flood lights captured by LEDs.
>
>It might be as much fun as watching integrated circuits make their
>inexorable into every computation and automation function in our lives.
>
>- Peter
>
>Peter T. Parrish, Ph.D., President
>California Solar Engineering, Inc.
>820 Cynthia Ave., Los Angeles, CA 90065
>Ph 323-258-8883, Mobile 323-839-6108, Fax 323-258-8885
>CA Lic. 854779, NABCEP Cert. 031806-26
>peter.parrish at calsolareng.com
>
>
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