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From: levy@ttrdc.UUCP
Newsgroups: sci.electronics
Subject: Re: Infra-Red Receiver?
Message-ID: <1640@ttrdc.UUCP>
Date: Sun, 29-Mar-87 05:02:56 EST
Article-I.D.: ttrdc.1640
Posted: Sun Mar 29 05:02:56 1987
Date-Received: Tue, 31-Mar-87 06:05:16 EST
References: <1922@ihlpl.ATT.COM> <562@puff.WISC.EDU> <3972@fritz.UUCP> <801@cooper.UUCP>
Organization: AT&T, Skokie, IL
Lines: 23

In article <801@cooper.UUCP>, gene@cooper.UUCP (Gene from EK Enterprises) writes:
<In article <3972@fritz.UUCP>, dennisg@fritz.UUCP (Dennis Griesser) writes:
<<               ... until I found out that the data printed on the back of
<< the blister pack gave the WRONG PIN-OUT FOR THE IR LED!
<What I do in most cases is not to trust such things like "short lead is the
<cathode, long lead is the anode" or any pictures of the case. Unless the
<LED is in a mondo-strango case, look through the plastic and match the leads
<with this drawing:
<	-------(-===-)----  ----
<	|               /   |  |
<	|  ------------/    |  |
<	|  |                |  |
<	|  |                |  |
<	|  |    ---|<---    |  |
<                C      A

Why not just test with an ohmmeter (compare with the way the ohmmeter reads
on a known-good garden-variety diode)?
-- 
|------------dan levy------------|  Path: ..!{akgua,homxb,ihnp4,ltuxa,mvuxa,
|         an engihacker @        |		vax135}!ttrdc!ttrda!levy
| at&t computer systems division |  Disclaimer:  try datclaimer.
|--------skokie, illinois--------|