LET device?

Dave_H

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Ottawa Ont. Canada
Has anyone heard of, or seen, an obscure device called Light Emitting Triac (LET)? I believe it was
an early attempt to combine power control with lighting in single device; possibly GE? It may have
been late 1980's to early 1990's.

Dave
 

PhotonWrangler

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There's such a thing as a light activated triac, a sort of photoelectric latching relay, but I've never heard of an LET. Interesting.
 

Dave_H

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LET there be light! No such device! If so it would have had to be introduced on April 1st.

GBGL! (Great Big Guffawing Laugh)

A friend who is a power engineer commented that almost anything will light up if you pass enough current through it.

This was inspired by an obscure but real device, the light-activated SCR (LASCR); SCR's being inherently light-sensitive. The small device I played with way back was packaged in a clear TO-92 with a concave lens formed into the rounded back, focusing on the die. Light-activated triac (LAT?) also makes sense.


Dave
 
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Katherine Alicia

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A friend who is a power engineer commented that almost anything will light up if you pass enough current through it.

magicsmoke-1.jpg


Gotta love that magic Smoke! :D
 

Dave_H

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Ottawa Ont. Canada
I was thinking to include reference to the predecessor of the SCR, the Germanium Controlled Rectifier (GCR)
but not being lighting-related it would have been OT and would raise suspicion...

Dave
 
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