DocumentCode
945898
Title
High-Stability Bridge-Balancing Oscillator
Author
Sulzer, P.G.
Author_Institution
National Bureau of Standards, Washington 25, D.C.
Volume
43
Issue
6
fYear
1955
fDate
6/1/1955 12:00:00 AM
Firstpage
701
Lastpage
707
Abstract
A crystal-controlled frequency standard having a frequency stability of a few parts in 1010 per day is described. The oscillator employs a 1-megacycle GT-cut crystal unit in a high-sensitivity bridge-balancing frequency-correction system. The crystal serves both as the resonant element for the oscilaltor and for a bridge whose unbalance is an indication of departure of the oscillator frequency from the crystal series resonance. The unbalance, greatly amplified, is used to AFC the oscillator.
Keywords
Associate members; Bridges; Feedback; Frequency measurement; Impedance; Measurement standards; Oscillators; Resonance; Resonant frequency; Stability;
fLanguage
English
Journal_Title
Proceedings of the IRE
Publisher
ieee
ISSN
0096-8390
Type
jour
DOI
10.1109/JRPROC.1955.278080
Filename
4055480
Link To Document