LEDs bad? [RE-wrenches]
Travis Creswell
tcreswell at ozarkenergyservices.com
Tue Dec 18 09:12:35 PST 2007
We are just now getting our hands on commercial specification grade LED
fixtures. The national rep for what appears to be a top of line product
recently visited us and we were impressed much more so then I thought we
would be. I'm definitely from the Show-Me state.
One particularly impressive product was the 12 watt LED fixture (assembly
might be a better description) that is a replacement for 65 watt PAR type
lamps. The Color (2700 Kelvin) and CRI (92) was absolutely
indistinguishable from incandescent. I was totally surprised. Retails for
~$130 they told me. Dimmable too!
www.LLfinc.com is the manufacturer's website. Apparently it's very
important to properly heat sink LED's. They do rate them at 50k hrs as
that's when light output begins to quickly decline. I'm not totally clear
about the details of that as we didn't get to finish that discussion. The
rep was heading off to catch a flight to DC to install these lights in Al
Gore's office.
*CRI = Color rendering index. Most compact fluorescents are in the mid 70's
and the better fluorescent tubes are in the mid 80's. Incandescent/Sunlight
is the benchmark for CRI @ 100.
Travis Creswell
Ozark Energy Services
-----Original Message-----
From: Don Loweburg [mailto:i2p at aol.com]
Sent: Tuesday, December 18, 2007 10:45 AM
To: RE-wrenches at topica.com
Subject: Re: LEDs bad? [RE-wrenches]
In a message dated 12/17/2007 6:08:36 P.M. Pacific Standard Time,
joel.davidson at sbcglobal.net writes:
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
Article impugns the cheapo led strings on the consumer market. Not good
for
led tech generally but in my mind does not address the many other led apps
developing. The article sounds like a smear piece masquerading as a tech
review.
Don L
**************************************See AOL's top rated recipes
(http://food.aol.com/top-rated-recipes?NCID=aoltop00030000000004)
[Non-text portions of this message have been removed]
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