Re: Sharp remote control ceramic resonator frequency?

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#597

From: Bob Parker
Date: Mon, 21 Mar 2005 13:15

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   Yesterday I started trying a few different resonators/crystals of
assorted frequencies in the remote. With a 455kHz resonator, the
output frequency to the IR LED was something over 4kHz, and all
functions were incredibly slow. 
   Figuring that the IR frequency should be close to 40kHz, I put in a
4MHz crystal, a frequency I'm sure I've often seen in remotes, and the
IR frequency was about what I thought it should be= just under 40kHz.
   We're going to give this a try and see if it works.
   Thanks again to everyone for their suggestions!

Bob

Matt2 - Amstereo <amstereo@ToptusDOTcomDOTau> wrote:

>its probably a 455khz version E, these are found in analogue am radios 
>and any other ir remote control.

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From: Bob Parker <bobpdeletethis@despammed.com>
Newsgroups: sci.electronics.repair,aus.electronics
Subject: Re: Sharp remote control ceramic resonator frequency?
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