LET device?

[Dave_H]

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]

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]

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

 

[Katherine Alicia]

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

Gotta love that magic Smoke! :D

 

[PhotonWrangler]

Lol. There is the NED (Noise Emitting Diode). It only works once though. Very briefly. :poof:

 

[Dave_H]

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