Circuit for controlling the frequency of a pulse generator assoc

Details Circuit for controlling the frequency of a pulse generator assoc Circuit for controlling the frequency of a pulse generator assoc

1979-08-29

1981-11-17

Grimm, Siegfried H.

Oscillators

Automatic frequency stabilization using a phase or frequency...

Afc with logic elements

331 8, 331143, 331177R, H03L 708

Patent

active

043014232

ABSTRACT:
A circuit for controlling the frequency of a pulse generator associated with a microprocessor that is connected to power line frequency, uses an RC-stage which is connected ahead of the pulse generator as the frequency-determining element and which has a resistor 19 that is variable by a control signal derived from the microprocessor. The control signal is obtained by comparing the power line frequency and the pulse frequency with one another.

REFERENCES:
patent: 3129390 (1964-04-01), March et al.
patent: 3205452 (1965-09-01), Saudinaitis
patent: 3708762 (1973-01-01), Nilsson

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