Article View: sci.electronics
Article #20236Re: Super LEDs from RS
From: Charles Flaig
Date: Thu, 22 Dec 1988 22:46
Date: Thu, 22 Dec 1988 22:46
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1167 bytes
In article <7200022@silver> commgrp@silver.bacs.indiana.edu writes: >RS catalog # 276-087 "Super-Bright LED" ($1.69, from Japan) is truly >impressive. It's rated 2000 mcd output at 20mA (red; wavelength 660 >nm). Of course, the *REAL* question is: How do they perform when immersed in liquid nitrogen? Original LEDs had a significant increase in efficiency when supercooled. Coupled with the increased power handling capability, it's possible to get a surprising amount of light out of them (at several hundred mA). I had fun playing with this in college. Unfortunately, the high efficiency LEDs (40mcd) I tried didn't have the same effect. It would be interesting to know if these new LEDs do. They would be really impressive with several hundred mA of current at significantly higher efficiency! --Charles flaig@apple.com
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Path: arc1-ca.pugleaf.net!utzoo!attcan!uunet!husc6!rutgers!apple!flaig From: flaig@Apple.COM (Charles Flaig) Newsgroups: sci.electronics Subject: Re: Super LEDs from RS Message-ID: <358@internal.Apple.COM> Date: 22 Dec 88 22:46:38 GMT References: <7200022@silver> Organization: Apple Computer Inc, Cupertino, CA Lines: 18