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 06:32:09 GMT
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Original-From:
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Russell Nelson <NELSON@CRYNWR.antispamCOM>
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Viewed:
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438 times
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Maneesh Soni writes:
> It is not possible to have a two-terminal and dual colour LED.
Sure it is. You connect them back to back, so that positive current
gives you green light, negative current gives you red light, and
alternating current gives you a poor amber. They've been used that
way for years in model railroad spotlight signals.
--
-russ nelson <sig@russnelson.com> http://russnelson.com
Crynwr sells support for free software | PGPok | Government schools are so
521 Pleasant Valley Rd. | +1 315 268 1925 voice | bad that any rank amateur
Potsdam, NY 13676-3213 | +1 315 268 9201 FAX | can outdo them. Homeschool!
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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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