Oscillators – Electromechanical resonator – Crystal
Patent
1994-10-24
1996-07-09
Mis, David
Oscillators
Electromechanical resonator
Crystal
331 36C, 331116FE, 331173, 331177V, H03B 506, H03B 536, H03K 3014
Patent
active
055348262
ABSTRACT:
Oscillation is easily and reliably initiated in an oscillator by increasing the gain of the circuit at startup time. For example, the gain of an oscillator circuit may be increased at startup by reducing the value of a user controlled impedance until oscillation commences. Alternatively, or in combination, the input impedance of an amplifier used in the oscillator may be reduced at startup to facilitate the initiation of oscillation.
REFERENCES:
patent: 3619803 (1971-11-01), Klein
patent: 4039973 (1977-08-01), Yamashiro
patent: 4282496 (1981-08-01), Heuner
patent: 4307354 (1981-12-01), Miyagawa et al.
patent: 4517533 (1985-05-01), Bretl
patent: 4518930 (1985-05-01), Rozema et al.
patent: 4667170 (1987-05-01), Lofgren et al.
patent: 4675617 (1987-06-01), Martin
patent: 4704587 (1987-11-01), Ouyang et al.
patent: 4743864 (1988-05-01), Nakagawa et al.
patent: 4748425 (1988-05-01), Heck
patent: 4853655 (1989-08-01), Embree et al.
patent: 4887053 (1989-12-01), Embree et al.
patent: 4896122 (1990-01-01), Tahernia et al.
patent: 4918408 (1990-04-01), Sakihama et al.
patent: 4973922 (1990-11-01), Embree et al.
patent: 5041802 (1991-08-01), Wei et al.
patent: 5142251 (1992-08-01), Boomer
patent: 5175884 (1992-12-01), Suarez
patent: 5334954 (1994-08-01), Koblitz et al.
patent: 5359297 (1994-10-01), Hodel et al.
patent: 5410572 (1995-04-01), Yoshida
"The Current Dependency of Crystal Unit Resistance at Low Drive Level" Proceedings of the 25th Annual Symposium on Frequency Control Apr. 26-28, 1971, U.S. Army Electronics Command, Fort Monmouth, New Jersey pp. 139-147. Nonaka et al.
"A Simple Model for Quartz Resonator Low Level Drive Sensitivity" Forty-Fifth Annual Symposium on Frequency Control, L. Dworsky and R. Kinsman, Motorola, Inc. IEEE 1991, pp. 148-155.
AT&T Corp.
Indyk Eugene S.
Mis David
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