Power supply for a raster center controller for a video display

Details Power supply for a raster center controller for a video display Power supply for a raster center controller for a video display

1996-07-01

1997-11-25

Issing, Gregory C.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Cathode-ray deflections circuits

315411, G09G 104, H01J 2970

Patent

active

056916094

ABSTRACT:
A power supply for a raster center controller for a video display appliance which can prevent picture movement phenomena of a cathode ray tube which are caused by unstable power supply to the raster center controller due to the change of the horizontal frequency. The power supply for a raster center controller includes coils, provided in a secondary winding of a flyback transformer, for generating and providing to the raster center controller a pulse voltage having a pulse width corresponding to that of a high voltage developed in the flyback transformer, first and second power supply sections, coupled between the coils and the raster center controller, for providing positive and negative supply voltages to the raster center controller by rectifying and performing charge/discharge operation with respect to the pulse voltage developed in the coils, respectively.

REFERENCES:
patent: 3814981 (1974-06-01), Rusk
patent: 3965391 (1976-06-01), Lister
patent: 4635176 (1987-01-01), Hishiki et al.

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