Xref: utzoo sci.electronics:3955 rec.audio:8507
Newsgroups: sci.electronics,rec.audio
Path: utzoo!henry
From: henry@utzoo.uucp (Henry Spencer)
Subject: Re: Looking for Blue LEDs
Message-ID: <1988Oct1.222109.10746@utzoo.uucp>
Organization: U of Toronto Zoology
References: <1138@nmtsun.nmt.edu> <862@ritcv.UUCP> <255@rna.UUCP> <4422@lynx.UUCP> <871@ritcv.UUCP> <870@dlhpedg.co.uk>
Date: Sat, 1 Oct 88 22:21:09 GMT

In article <870@dlhpedg.co.uk> cl@datlog.co.uk (Charles Lambert) writes:
>I guess that a yellow LED is really a red and a green LED in the same capsule:
>correct?

Nope.  It's a different flavor of LED.  Red+green LEDs do exist, but they
are built for use as multi-color LEDs, with the ability to activate one or
the other color.  Activating both does give you yellow, but the red+green
jobs are more expensive and somewhat of a hassle to drive; using them for
single-color applications is not worthwhile.
-- 
The meek can have the Earth;    |    Henry Spencer at U of Toronto Zoology
the rest of us have other plans.|uunet!attcan!utzoo!henry henry@zoo.toronto.edu