Xref: utzoo sci.electronics:19481 rec.radio.amateur.misc:1891
Newsgroups: sci.electronics,rec.radio.amateur.misc
Path: utzoo!henry
From: henry@zoo.toronto.edu (Henry Spencer)
Subject: Re: Adjust frequency of4 terminal, rectanglular oscillators?
Message-ID: <1991Apr20.231230.5685@zoo.toronto.edu>
Date: Sat, 20 Apr 1991 23:12:30 GMT
References: <1991Apr20.012710.266@ac.dal.ca>
Organization: U of Toronto Zoology

In article <1991Apr20.012710.266@ac.dal.ca> youngqd@jacobs.cs.orst.edu (Dean Youngquist) writes:
> For space saving and cost reasons I would like to use one of 
> those small can oscillators with 4 terminals.  The only 
> problem is how to modulate either the amplitude or the 
> frequency of this device...

Very probably what you've got there is a crystal oscillator.  There is
basically *no way* to vary their amplitude or frequency very much.  The
frequency is fixed by the physical dimensions of the crystal, modulo small
variations due to temperature and supply voltage, and the output (in the
ones I'm familiar with) is from digital logic that only knows about 0 and 1,
nothing in between.
-- 
And the bean-counter replied,           | Henry Spencer @ U of Toronto Zoology
"beans are more important".             |  henry@zoo.toronto.edu  utzoo!henry