Phase control device

Details Phase control device Phase control device

1980-02-21

1982-07-13

Olms, Douglas W.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

328155, 307512, H04H 500

Patent

active

043396313

ABSTRACT:
A phase control circuit for use in a compatible quadrature AM stereophonic receiver in which the phase of the output signal of a voltage-controlled oscillator in a phase-locked loop circuit has a fixed predetermined phase difference with respect to the input signal at all times. A variable phase shifter varies the phase of the output signal from the voltage controlled oscillator in the phase-locked loop circuit in accordance with an input control voltage. The phase of the output of the variable phase shifter is compared with the phase of the input intermediate frequency signal to produce a control signal voltage for the variable phase shifter which varies according to the phase difference between the two compared signals wherein the desired signal having a fixed phase difference is provided at the output of the variable phase shifter.

REFERENCES:
patent: 3624274 (1971-11-01), Araki
patent: 4087737 (1978-05-01), De Gennaro
patent: 4218586 (1980-08-01), Parker et al.
patent: 4273958 (1981-06-01), Hirata

Affiliated with

Also associated with

Rating

Phase control device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Phase control device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Phase control device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-205059