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Article #596Re: Sharp remote control ceramic resonator frequency?
From: Terry Given
Date: Thu, 24 Mar 2005 01:21
Date: Thu, 24 Mar 2005 01:21
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1929 bytes
Bob Parker wrote: > 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 I fixed a friends remote last year, one leg of the 4MHz xtal had come unsoldered. Cheers Terry
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