Electric lamp and discharge devices: systems – Cathode ray tube circuits – Cathode-ray deflections circuits
Patent
1998-08-14
2000-09-26
Ham, Seungsook
Electric lamp and discharge devices: systems
Cathode ray tube circuits
Cathode-ray deflections circuits
315371, 315369, G09G 104, H01J 2970
Patent
active
061246867
ABSTRACT:
A horizontal deflection circuit is provided in which a large retrace pulse voltage applied to a horizontal deflection yoke can be taken to reduce the deflection current and which is capable of easily performing horizontal image size adjustment and distortion adjustment. A parallel connection of a switching element, a damper diode, and a resonance capacitor is connected in series to a parallel connection of another switching element, another damper diode, and another resonance capacitor, and power is supplied from the connection point via a fly-back transformer. The comparison value of the retrace pulse voltages applied across both ends of the switching elements is fed back through a switching element control circuit to the switching element so that the deflection current of the horizontal deflection yoke is controlled.
REFERENCES:
patent: 4206388 (1980-06-01), Ishigaki et al.
patent: 4513228 (1985-04-01), Teuling
patent: 4733141 (1988-03-01), Watanuki
patent: 5416389 (1995-05-01), Merlo et al.
patent: 5714849 (1998-02-01), Lee
Honji Hidetaka
Kawamura Ban
Kikuchi Ken
Watanabe Junzo
Frommer William S.
Ham Seungsook
Patti John
Sony Corporation
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