Circuit for producing the operating voltages and the horizontal-

Details Circuit for producing the operating voltages and the horizontal- Circuit for producing the operating voltages and the horizontal-

1984-07-20

1987-05-12

Tarcza, Thomas H.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Power supply from deflection circuit source

315408, 315399, 315371, H01J 2970

Patent

active

046653473

ABSTRACT:
In picture-reproducing equipment with higher scanning frequencies (e.g., flicker-free television, visual display unit), the generation of the horizontal-deflection current is separated in frequency from the generation of the operating voltages by supplying the horizontal-deflection circuit from a DC voltage source which is part of the voltage power supply providing the operating voltages. The supply circuit is preferably connected to the grounded deflection capacitor. This makes it possible to influence the picture geometry in a simple manner, particularly to perform horizontal pincushion correction.

REFERENCES:
patent: 4144479 (1979-03-01), Farina et al.
patent: 4240012 (1980-12-01), Willis
patent: 4305023 (1981-12-01), Willis
patent: 4316127 (1982-02-01), Lamoureux
patent: 4390820 (1983-06-01), Willis
patent: 4516058 (1985-05-01), Haferl

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