Oscillators – Automatic frequency stabilization using a phase or frequency... – Afc with logic elements
Patent
1986-08-07
1988-04-12
LaRoche, Eugene R.
Oscillators
Automatic frequency stabilization using a phase or frequency...
Afc with logic elements
331145, 331175, 331177R, H03L 706
Patent
active
047377364
ABSTRACT:
A system for stabilizing the output of a voltage-to-frequency (V/F) converter having an input terminal and an output terminal. The system comprises a single-shot having an input terminal and an output terminal. The output terminal of the V/F converter is coupled to the input terminal of the single-shot. An integrator comprising an operational amplifier is coupled in integrating amplifier configuration for coupling the output terminal of the single-shot to the input terminal of the V/F converter. The operational amplifier comprises a difference amplifier. The integrator includes a capacitor coupled between one of the input terminals of the difference amplifier and the output terminal of the difference amplifier. The output terminal of the difference amplifier is coupled to the input terminal of the V/F converter.
REFERENCES:
patent: 3754194 (1973-08-01), Camp, Jr.
patent: 4520327 (1985-05-01), Myers
Penn Paul E.
Werckman, Jr. Roger A.
Dart Controls, Inc.
LaRoche Eugene R.
Mis David
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