LEDs bad? [RE-wrenches]

[Bill Loesch]

Well said, Doc.

----- Original Message ----- 
From: "Peter Parrish" <peter.parrish at calsolareng.com>
To: <RE-wrenches at topica.com>
Sent: Tuesday, December 18, 2007 8:37 PM
Subject: RE: LEDs bad? [RE-wrenches]


>
> 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
>
> -----Original Message-----
> From: Joel Davidson [mailto:joel.davidson at sbcglobal.net]
> Sent: Monday, December 17, 2007 6:02 PM
> To: RE-wrenches at topica.com
> Subject: [Norton AntiSpam] LEDs bad? [RE-wrenches]
>
>
> Wrenches,
> Any truth to report that LEDs rust from the inside out and do not have
> long-life warranties? See EETimes commentary about LEDs replacing
> incandescent Christmas lights at
>
http://www.eetimes.com/rss/showArticle.jhtml?articleID=204702684&cid=RSSfeed
> _eetimes_newsRSS
> Joel Davidson
>
>
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