Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!sol.ctr.columbia.edu!emory!athena.cs.uga.edu!mcovingt
From: mcovingt@athena.cs.uga.edu (Michael A. Covington)
Newsgroups: sci.electronics
Subject: Re: Phone scrambler
Keywords: Phone scrambler
Message-ID: <1991Mar25.021609.21539@athena.cs.uga.edu>
Date: 25 Mar 91 02:16:09 GMT
References: <1991Mar23.215050.24738@sugar.hackercorp.com> <1991Mar24.012754.9816@athena.cs.uga.edu> <2476@umriscc.isc.umr.edu>
Organization: University of Georgia, Athens
Lines: 10

A doubly balanced mixer outputs *only* sum and difference frequencies;
neither the input signal nor the oscillator signal appears at the output.

I think "doubly" refers to the fact that both the oscillator and the
input can swing to either side of 0 volts and the balancing still works.
-- 
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Michael A. Covington | Artificial Intelligence Programs
The University of Georgia  |  Athens, GA 30602   U.S.A.
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