LED teardown at
http://www.edn.com/blog/PowerSource/41611-Samsung_LED_light_bulb_teardown_includes_objective_dimming_numbers.php?cid=EDNToday_20120210
----- Original Message -----
From: Jesse Dahl
To: RE-wrenches
Sent: Friday, February 10, 2012 5:32 AM
Subject: Re: [RE-wrenches] 110Vac LED resistance to weak grids in
developingworld
I don't know about spikes or grid events, but my home is 3/4 LED and have
zero complaints. The warranty on them is a little weak compared to life
cycle...... All of mine vary in K rating and lumens and work beautifully.
Sent from my iPhone
On Feb 9, 2012, at 7:45 PM, Ray Walters <r...@solarray.com> wrote:
Personally I love my latest LED lights. They have gotten substantially
better just in the past year. We have some 8 watt units in our kitchen that
illuminate just like a 35 watt halogen, beautiful color rendition, not that
blue they used to have.
I especially like my new 1000 lumen spotlight that lights up brighter than
a car head light in a package slightly larger than the old mini mag flash
lights.
However, I have no experience with ham radio, or theRF interference issue.
We're WiFi, and cell at our house. I do some audio recording, etc. and haven't
noticed any extra buzz from the several LEDs I have in my basement studio.
Ray
On 2/9/2012 4:54 PM, toddc...@finestplanet.com wrote:
i have some personal experience with led light bulbs. i put them outside
because the cfl floodlights are very s-l-o-w to warm up to full brightness.
1) leds are still slightly less efficient (lumens per watt) than cfl's
2) led light bulbs (2 different brands) throw out an ungodly amount of
rfi... want to listen to a conversation on the 2 meter ham radio or listen to a
weak fm broadcast station or watch channel 6 on the tee-vee? go shut off the
led lights off first.
my conclusion? led light bulbs are not ready for prime time.
todd (still using my 25+ year old phillips dulux cfls)
On Thursday, February 9, 2012 1:44pm, "Jim MacDonald"
<j...@solaresystems.com> said:
Hello wrenches
I am in Central America and looking to suggest customers buy efficient
LEDs for illumination in their 120V-wired homes, connected to local power grids
with less-than-desirable power quality.
I see that so many manus claim long life for the LEDs, in the tens of
thousands of hours, yet so few if any back it up with a decent warranty.
Folks are hesitant to make this investment, believing that voltage surges
or dips could destroy the LEDs.
Has anyone heard of LED lights' lives ending prematurely due to grid
events?
Would inline surge protectors [something small to be installed
immediately downstream of the breaker in the home's main panel) be helpful, and
if so, does anyone have any recommended brands?
thanks
Jim MacDonald
Sent from Finest Planet WebMail.
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