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From: lairdkb@mentor.cc.purdue.edu (Kyler Laird)
Newsgroups: sci.electronics
Subject: Re: Universal IR Remote Receiver
Message-ID: <16584@mentor.cc.purdue.edu>
Date: 13 Nov 90 20:41:30 GMT
References: <10955@goofy.Apple.COM> <1990Nov12.171158.8146@sobeco.com>
Reply-To: lairdkb@mentor.cc.purdue.edu (Kyler Laird)
Organization: Purdue University
Lines: 23

In article <1990Nov12.171158.8146@sobeco.com> ygrignon@sobeco.com (y.grignon) writes:
>In <10955@goofy.Apple.COM> hunter@apple.com (Kurt Hunter) writes:
>
>>Does anyone know of a discrete or integrated amplifier circuit that can be 
>>used to increase the signal of an IR detector diode while preserving all 
>>the IR signal data?
>
>Radio Shack has an IR receiver module that you can get for cheap.  I do not
>remember if it demodulates the signal or not.
>
>Y. Grignon

Yes, it does.  The output is a logic (on/off) signal.  So simply using it to
gate the output of an oscillator (555?) should do the trick.  The pulse widths 
I've worked with (if I remeber correctly) are fairly long so timing shouldn't be
a major hangup.

(Oh yeah, I think the output is active low.)

It's a fun little item to have around - I used a 6811 to decode the output.  I'd
like to build a Universal IR _Receiver_ some day.

--kyler