Re: Invention of the black LED
- From: "Paul Hovnanian P.E." <paul@xxxxxxxxxxxxx>
- Date: Fri, 07 Nov 2008 18:48:20 -0700
John Larkin wrote:
On Thu, 06 Nov 2008 20:35:06 GMT, Jan Panteltje
<pNaonStpealmtje@xxxxxxxxx> wrote:
Will the first science directive from Obamama be:
Invent the black LED?
Powering up a black LED will spread darkness all around,
useful for example when one needs a darkroom and wants to sleep.
National used to offer the DED, the Dark Emitting Diode (anybody have
a datasheet?) I think they discontinued it as yields declined.
I've used a couple of these. They start out emitting light, like a
normal LED. But after a short break-in period, they switch over to
emitting dark instead.
I believe this device was replaced by the invisible LED, or IED. Like
the DED, they start out as a normal LED. But when they switch over to
dark mode, the entire LED, encapsulation and everything, becomes
invisible. All that remains to be seen are the two leads.
Quite an interesting product actually. Post some technical questions and
a request for some sample IEDs online and I'm sure you will get a quick
response.
--
Paul Hovnanian mailto:Paul@xxxxxxxxxxxxx
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Due to recent budget cuts, the light at the end of the tunnel has
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