DocumentCode
1379738
Title
A Thermostat with Control Temperature Independent of Ambient Temperature
Author
Thompson, A.M. ; Archer, R.W.
Author_Institution
Commonwealth Scientific and Industrial Research Organisation (CSIRO), National Standards Laboratory, Division of Electrotechnology, Sydney, Australia
Volume
101
Issue
82
fYear
1954
fDate
8/1/1954 12:00:00 AM
Firstpage
450
Lastpage
452
Abstract
A circuit is described for the precise temperature control of the oven of a quartz-crystal frequency standard. A temperature-sensitive bridge of copper and manganin resistors is used as the amplitude control of an oscillator, power from the oscillator heating the oven. It is shown that the temperature of an isothermal oven is maintained independent of ambient temperature and depends only on the gain of the maintaining amplifier. An application of the thermostat is described in which the oven temperature of about 50° C is maintained within ±1 millideg.
Keywords
thermal variables control; thermostats;
fLanguage
English
Journal_Title
Proceedings of the IEE - Part II: Power Engineering
Publisher
iet
Type
jour
DOI
10.1049/pi-2.1954.0096
Filename
5240787
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