Phase locked loop circuit

Details Phase locked loop circuit Phase locked loop circuit

1978-08-08

1979-07-03

Grimm, Siegfried H.

Oscillators

Automatic frequency stabilization using a phase or frequency...

Transistorized controls

179 15BT, 307232, 329 50, 329103, 329122, 331 27, 331 64, H03B 304

Patent

active

041602170

ABSTRACT:
A phase locked loop includes a variable frequency oscillator, a phase comparator for comparing the phase between an output signal derived from the variable frequency oscillator and a reference signal and for generating a control signal in response to the phase difference between the two signals for controlling the variable frequency oscillator, an indicator for indicating the phase difference between the signals, and a control circuit for varying the frequency of the variable frequency oscillator.

REFERENCES:
patent: 3080533 (1963-03-01), Edwards
patent: 3711652 (1973-01-01), Metro
patent: 3801925 (1974-04-01), Parkyn
patent: 3962551 (1976-06-01), Gay

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