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From: vail@tegra.COM (Johnathan Vail)
Newsgroups: sci.electronics
Subject: Re: LED history ?
Message-ID: <1962@atlas.tegra.COM>
Date: 22 Jan 91 23:20:04 GMT
References: <1991Jan16.034246.12843@zoo.toronto.edu>
Organization: Tegra-Varityper, Inc., Billerica, MA
Lines: 31
In-reply-to: wern@zoo.toronto.edu's message of 16 Jan 91 03:42:46 GMT


In article <1991Jan16.034246.12843@zoo.toronto.edu> wern@zoo.toronto.edu (Wern Thiel) writes:

   Does anyone have comprehensive references as to who invented/developed the
   LED? While many components (transistor and IC's) are covered in books and
   texts; the LED seems to be missing. It would be interesting to read about
   the research that led to the LED. Similar situation regarding liquid
   crystal technology. We got our first LED in about 1974 for $10.


On a related note:  I was working on a CD player and on the circuit
board was a normal looking glass diode, cathode band and all, that lit
up red.  It wasn't an indicator, and had a normal D number like the
other real diodes on the board.

Was the light emitted a side effect of the diode?

Was it a special LED in this package for use to frop a certain voltage
or something?

Maybe some kind of diagnostic LED?

jv



``Bunnies believe in deeds, not words.''
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