Horizontal size regulation circuit of display device

Details Horizontal size regulation circuit of display device Horizontal size regulation circuit of display device

1998-03-30

2000-02-01

Westin, Edward P.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Cathode-ray deflections circuits

315370, 315399, H01J 2956, G09G 104

Patent

active

060206942

ABSTRACT:
A horizontal size regulation circuit of a horizontal deflection circuit of a display device maintains a constant horizontal size despite transformer manufacturing tolerances, by using a horizontal flyback output value fed back from a choke coil of a horizontal output circuit. A voltage supplied to a switching element providing current to a horizontal output transistor is sensed according to the duty cycle output from a horizontal size controller. A voltage detector incorporated into the horizontal deflection circuit controls the value fed back to the horizontal size controller according to the variation of the voltage supplied to the switching element.

REFERENCES:
patent: 4063133 (1977-12-01), Nero et al.
patent: 4263615 (1981-04-01), Steinmetz et al.
patent: 4559481 (1985-12-01), Dietz
patent: 5438245 (1995-08-01), Kii et al.
patent: 5625261 (1997-04-01), Ogawa
patent: 5831398 (1998-11-01), Kim

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