18_60_MHz_THIRD_OVERTONE

Published:2009/7/6 0:55:00 Author:May | From:SeekIC

International Crystal OF-1 oscillator for third-overtone crystals requires no inductors. Crystal operates near series resonance, making capacitor unnecessary in series with crystal. With 28.3-MHz third-overtone crystal, circuit delivers 28.3 MHz when C1 is 100 pF and C2 is 18 pF. Using larger values given in table produces oscillation at fundamental of 9.43 MHz.-C. Hall, Overtone Crystal Oscillators Without Inductors, Ham Radio, April 1978, p 50-51.



Reprinted Url Of This Article:
http://www.seekic.com/circuit_diagram/Basic_Circuit/18_60_MHz_THIRD_OVERTONE.html

Print this Page | Comments | Reading(3)