Re: Detecting Sine Wave freq

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Article #16822

#16822

From: Mark Zenier
Date: Sun, 10 Jan 1993 05:23

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Paul Michael Wayner (pmw2c@csissun10.ee.Virginia.EDU) wrote:
: I'm interested in designing a circuit that will determine
: if a sine wave frequency is in a certain range of values,
: specifically, 45-51 MHz.  It is very important that the
: detector be as reliable a possible, so I would like to use
: only a few active components and try to stick to RC's as
: much a possible.

(At that frequency, every wire is an inductor, whether you 
want it to be or not.)

How sensitive?  And is the input an antenna or a high level
signal?  A low level signal?   What kind of noise or
interference?  More than one signal at a time?  Fixed or
Variable frequency?  Is the output an on/off digital signal, or
a amplitude, a blinking light, a spectrum display, etc. ...

[In other words, your spec. is a little vague.]

Mark Zenier  markz@ssc.wa.com

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Path: arc1-ca.pugleaf.net!sparky!uunet!nwnexus!ole!ssc!markz
From: markz@ssc.com (Mark Zenier)
Subject: Re: Detecting Sine Wave freq
Organization: SSC, Inc.,  Seattle, WA
Date: Sun, 10 Jan 1993 05:23:36 GMT
Message-ID: <1993Jan10.052336.9972@ssc.com>
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