Television synchronous deflection circuit

Details Television synchronous deflection circuit Television synchronous deflection circuit

1992-02-03

1993-05-04

Issing, Gregory C.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Cathode-ray deflections circuits

315387, 358158, G09G 104, H01J 2970, H03L 700

Patent

active

052085171

ABSTRACT:
A television synchronous deflection circuit is generally comprised of a first power supply for supplying a D.C. voltage to a horizontal AFC circuit in the horizontal deflector of a television receiver, a second power supply for smoothing the flyback pulse and for supplying a predetermined D.C. voltage to a synchronous separator, and a comparator for comparing the output voltages of the first and second power supply circuits with each other. According to a comparison signal outputted from the comparator, the operation of the horizontal AFC circuit is controlled. For example, when the output voltage of the second power supply is less than a predetermined value, operation of the horizontal AFC circuit is prohibited; and when it is larger than the predetermined value, such prohibition is released.

REFERENCES:
patent: 3956669 (1976-05-01), Del Ciello
patent: 4188568 (1980-02-01), Manners
patent: 4788591 (1988-11-01), Decraemer

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