LEDs bad? [RE-wrenches]

[Ezra Auerbach, DragonSun Consulting]

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Couldn't live without LED headlamps here. Just about everyone on the  
island uses them for everything from getting to the morning boat to  
the evening wood shed chores. They are truly a breakthrough in  
personal lighting.

Ezra

p.s. good solstice to everyone and a special thanks to Michael W.

Dec-07, at 11:18 PM, Sky Sims wrote:

>
> Recently added them to every ones tool pouches. They work great.
>
> Sky Sims
> Ecological Systems
> www.ecologicalsystems.biz
> 220 County Road 522
> Manalapan, NJ 07726
> ph)732-462-3858  fax)732-462-3962
>
> -----Original Message-----
> From: John Raynes [mailto:john at raynes.com]
> Sent: Tuesday, December 18, 2007 11:16 PM
> To: RE-wrenches at topica.com
> Subject: RE: LEDs bad? [RE-wrenches]
>
>
> 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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