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From: geopi@homxc.ATT.COM (G.COTSONAS)
Newsgroups: sci.electronics
Subject: Beat Frequency Counter ideas needed
Keywords: beat frequency counter circuit
     I have a small, simple problem:
Message-ID: <5288@homxc.ATT.COM>
Date: 31 Jan 89 19:24:03 GMT
Distribution: usa
Organization: AT&T BL Holmdel NJ USA
Lines: 22


     I am interested in a cheap implementation of  a  circuit  to
     count  and  display  (the  value of) a beat frequency in the
     range DC to 100Hz, low frequency stuff.

     The prior stage of the circuit will probably be  an  op  amp
     summing  two  sine  waves  produced by a pair of 8038s (each
     signal in the audio range, perhaps 100Hz to a few kHz).

     Actually, it would be desirable to count the frequencies  of
     the two original signals, as well...

     Advice would be appreciated.  (I would be a bit  embarrassed
     asking  this,  without  the  caveat  that I'm not a hardware
     designer; I mostly sit on the software side of the fence :-))

     Thank you.
     George Cotsonas AT&T CPL/BL
-- 
George P. Cotsonas
AT&T CPL/BL
{homxc|hocpa}!geopi