Electric lamp and discharge devices: systems – Cathode ray tube circuits – Power supply from deflection circuit source
Patent
1987-12-31
1989-05-16
Blum, Theodore M.
Electric lamp and discharge devices: systems
Cathode ray tube circuits
Power supply from deflection circuit source
315408, 358243, H01J 2970
Patent
active
048313114
ABSTRACT:
A high voltage stabilization curcuit for a multi-frequency horizontal deflection circuit in a video monitor or receiver and having a plurality of supply voltages applied to the flyback transformer of the deflection circuit through the operation of a pair of series connected switching circuits whereby different amplitude power supply voltages are coupled to the primary winding of the flyback transformer depending upon the horizontal drive frequency being utilized. The high voltage output across the secondary winding of the flyback transformer is stabilized through a feedback circuit which senses the output across the secondary winding of the flyback transformer to increase the amplitude of the horizontal drive applied to the primary winding when the high voltage output across the secondary winding decreases by means of a boost circuit coupled to the horizontal output circuit coupled to the primary winding.
REFERENCES:
patent: 4536684 (1985-08-01), Babcock
patent: 4604556 (1986-08-01), Haferl
patent: 4645989 (1987-02-01), Barnes
patent: 4673984 (1987-06-01), Kikuchi
Blum Theodore M.
Cain David
Goldstar Co. Ltd.
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