Subject:
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Re: Homemade LED Bricks
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Newsgroups:
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lugnet.robotics
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Date:
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Mon, 15 Nov 1999 06:38:38 GMT
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Original-From:
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dave madden <DHM@MERSENNE.COMsaynotospam>
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Viewed:
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573 times
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=>From: "Maneesh Soni" <maneeshsoni@hotmail.com>
=>...
=>It is not possible to have a two-terminal and dual colour LED. One of the
=>three terminals is a common negative terminal of two LEDs that are inseide
=>the same casing. The two remaining terminals are used to connect positive
=>side of battery to.
This is curious: why can't one build a diode that (electrically)
behaves like this:
red
+---|<---+
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-----+ +----
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+--->|---+
green
Are LEDs such bad diodes that this won't work? Or is there something
else I forgot (or never learned) in electronics that makes this
impossible?
d.
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Message has 1 Reply:
 | | Re: Homemade LED Bricks
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| (...) Such LEDs are available. Forward DC -> red, reverse DC -> green, AC -> yellow. I'm looking at a catalogue now with some. -- Frank Wales [frank@limitless.co.uk] (25 years ago, 15-Nov-99, to lugnet.robotics)
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Message is in Reply To:
| | Re: Homemade LED Bricks
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| Hi! It is not possible to have a two-terminal and dual colour LED. One of the three terminals is a common negative terminal of two LEDs that are inseide the same casing. The two remaining terminals are used to connect positive side of battery to. (...) (25 years ago, 15-Nov-99, to lugnet.robotics)
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