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From: schumann@puff.WISC.EDU (Christopher Schumann)
Newsgroups: sci.electronics
Subject: Re: Infra-Red Receiver?
Message-ID: <562@puff.WISC.EDU>
Date: Sun, 22-Mar-87 17:20:25 EST
Article-I.D.: puff.562
Posted: Sun Mar 22 17:20:25 1987
Date-Received: Tue, 24-Mar-87 01:19:51 EST
References: <1922@ihlpl.ATT.COM>
Organization: U of Wisconsin CS Dept
Lines: 16
Keywords: How do I make one?

In article <1922@ihlpl.ATT.COM>, psfales@ihlpl.ATT.COM (Peter Fales) writes:
> I have been trying to come up with a simple method to receive IR signals
> such as those produced by a television set remote control.  Since I don't
> need a great range (even a few inches would suffice)
> Thanks in advance,
> Peter Fales

Try a phototransistor.  Radio Shack sells an IRED LED, Phototransistor
pair for less than 3 dollars.

If you use a large resistor (1 Megohm) you will get high sensitivity,
but slow response.  A smaller resistor will be less sensitive, but
will be faster.  Pick up RS's Mini-notebook on Opto-electronics for $1.49
for more help.

Chris Schumann				schumann@puff.wisc.edu