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Re: Blue LED Dial Lights. (Or other colors)


 

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I assume that LED's are much like transistors and other SS devices.? Open transistors almost always started as shorted transistors but the very fine wires that connect the silicon wafers to the leads will burn out immediately with a short even with very little current available.? It is almost like a microamp fuse.? I would expect that a shorted LED would burn open long before the transformer would feel it.? Just my opinion.

Jerry

On 10/1/2022 9:47 AM, William Barrett, KW1B via groups.io wrote:


Assembled Electro-Lords:

Ya know,? I saw those advertised somewhere a while back and a guy
who?I resepct for his technical savvy?said they were a bad idea. His
thesis was that LEDs occasionally go bad in a "short" mode, unlike
conventional bulbs that virtually always blow "open."? He said a
shorted LED could burn out the filiment winding on the power
transformer.? Sounded kinda hyper-picky to me; I never saw a
LED fail in?dead short mode, myself.? (..and I bin doin' this for
a few decades.)
?
Was he right??
?
If not, I have number of things I'd like color LEDs for the dials
and meters...
?
(I sold the Drakes a while back, but the point remains.)
?
? 73
KW1B

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