Bilateral frequency adjustment of crystal oscillators

Details Bilateral frequency adjustment of crystal oscillators Bilateral frequency adjustment of crystal oscillators

1987-06-26

1988-11-01

LaRoche, Eugene R.

Oscillators

Bridge type

Piezoelectric crystal in bridge

331158, 331177R, 331177V, H03B 532, H03B 538

Patent

active

047823097

ABSTRACT:
A crystal oscillator in a bridge circuit coupled to a differential amplifier. Coordinated adjustment of one or two arms of the bridge permits pulling of the crystal's operating frequency both above and below its series resonant frequency.

REFERENCES:
patent: 3588690 (1971-06-01), Griffin
patent: 4358742 (1982-11-01), Ferriss
patent: 4661785 (1987-04-01), Benjaminson
"The Bridge-Stabilized Oscillator" by L. A. Meacham from Proceedings of the nstitute of Radio Engineers, vol. 26, No. 10, dtd Oct. 1938, pp. 1278-1294.
"Results of Continued Development of the Differential Crystal Oscillator" by Albert Benjaminson, pp. 171-175. 1985 IEEE.
"Balanced Feedback Oscillators" by Albert Benjaminson, pp. 327-333, 38th Annual Frequency Control Symposium-1984 IEEE.

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