Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Frequency of cyclic current or voltage
Patent
1981-10-28
1983-10-25
Krawczewicz, Stanley T.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Frequency of cyclic current or voltage
324 80, 29 2535, G01R 2922, G01R 2300, H04R 1700
Patent
active
044121725
ABSTRACT:
The thermal properties of a crystal resonator are rapidly and inexpensively measured by first immersing the resonator into an ice water bath at 0.degree. C. and monitoring the frequency of the resonator until the frequency of the resonator is no longer changing; then rapidly immersing the resonator into a boiling water bath at 100.degree. C. and monitoring the frequency versus time characteristic of the resonator at least until the frequency of the resonator is no longer changing; repeating the above cycle, and determining the thermal properties of the crystal resonator from the frequency versus time characteristic.
REFERENCES:
patent: 3916303 (1975-10-01), Butuzov
patent: 4093914 (1978-06-01), Peppiatt
Rudolph Bechmann "Frequency-Temperature-Angle Characteristics of AT-Type onators Made of Natural and Synthetic Quartz" Proceedings of the ITE, Nov. 1956, pp. 1600-1607.
John A. Kusters "TTC's-Further Developmental Results," Proceedings of the 31st Annual Symposium on Frequency Control, 1977, p. 367.
Hammond, Adams, Benjaminson "Hysteresis Effects in Quartz Resonators" Proceedings of the 22nd Annual Symposium on Frequency Control, 1968, pp. 55 to 66.
Marvin R. Frerking "Vector Voltmeter Crystal Measurement System" Proceedings of the 23rd Annual Symposium on Frequency Control, 1969, pp. 92 to 101.
Ballato and Tilton "Ovenless Activity Dip Tester" Proceedings of the 31st Annual Symposium on Frequency Control, 1977, pp. 102 to 107.
Gibson Robert P.
Gordon Roy E.
Krawczewicz Stanley T.
Murray Jeremiah G.
Solis Jose M.
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