Re: totally OT, except to the extent that it's QRP: LED lamps
Posted by
wayne burdick on
Apr 03, 2009; 9:56pm
URL: http://elecraft.85.s1.nabble.com/OT-MFJ-Quality-Issues-tp2582801p2583107.html
Hi Allen,
The new LED bulbs are rated for 50000 hours, but this is a guess,
because they haven't burned out yet even in accellerated life tests :)
Your older LED lamps probably failed because they were using a very
small number of LEDs, driven to very high current. Newer LED bulbs use
dozens of LEDs, each running at low current.
73,
Wayne
On Apr 3, 2009, at 2:40 PM, Allen Wisbey wrote:
> I hope you have good luck with longevity.
> We replaced hundreds of exit light bulbs with LED types at my previous
> job. They did not last long enough to pay for any energy savings.
> Granted, that was 10 years ago, maybe technology has improved to a
> point
> that they are a viable option....
---
http://www.elecraft.com______________________________________________________________
Elecraft mailing list
Home:
http://mailman.qth.net/mailman/listinfo/elecraftHelp:
http://mailman.qth.net/mmfaq.htmPost: mailto:
[hidden email]
This list hosted by:
http://www.qsl.netPlease help support this email list:
http://www.qsl.net/donate.html