[Elecraft] totally OT, except to the extent that it's QRP: LED lamps

[wayne burdick]

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....


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