G - Physics – 05 – D
Patent
G - Physics
05
D
341/32, 341/32.3
G05D 23/24 (2006.01) H03L 1/04 (2006.01)
Patent
CA 1231155
- 20 - ABSTRACT OF THE DISCLOSURE A method and a device for regulating the heating of a thermostatically controlled enclosure of a quartz oscillator. During a first stage, the thermostatically controlled enclosure is exposed to an external temperature close to the maximum operating temperature and the frequency of the oscillator is measured. During a second stage, the thermostatically controlled enclosure is exposed to an external temperature close to the minimum temperature of the range and the difference between the frequency of the oscillator and the frequency previously measured is cancelled out by modifying the distribution of the powers dissipated by the heating elements of the thermo- statically controlled enclosure. The heating of the enclosure is performed by a chain of voltage stabiliser semiconductor circuits connected in series, each of the circuits being traversed by a regulated heating current. The regulating of the heating action is performed by modifying the stabilised voltages of the circuits.
465613
Canzian Patrice
Chauvin Jacques
Compagnie D'electronique Et de Piezo-Electricite - C.e.p.e.
Goudreau Gage Dubuc
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