daemon@silver.ucs.indiana.edu (Mr Background) (01/04/91)
Book Review published in _Speleonics 14_ (Feb. 1990):
_Crystal Oscillator Circuits_ by R.J.Matthys.
Wiley and Sons, 1983, ISBN 0-471-87401-9.
This is a very practical book; it describes many types of crystal
oscillator circuits with the underlying design criteria, then
summarizes in table form the advantages and disadvantages of each
circuit. The author has then constructed each circuit operating at
three different frequencies (1, 10, and 100 MHz) and presents
photographs of the output waveforms, as well as tests for sensitivity
to cold, heat, and supply voltage. An example of the useful
information to be found is a table where the effects of various ways
to trim the frequency of an oscillator are summarized.
I used the data in the book to make an oscillator for CB crystals, the
commonly available third-harmonic crystals which operate near 27 MHz.
I used the Colpitts design in a circuit that ensures the _crystal_
oscillates at the harmonic frequency, rather than the common but
cruder method of operating the crystal at its fundamental and driving
a resonant tank circuit, a method which produces poorer waveforms and
much more noise. That is just one example of the nice touches and
useful information found throughout this book.
-- Ian Drummond
The bad news: The book costs > $40.
--
Frank Reid W9MKV reid@ucs.indiana.edu