Drive circuit for multiple scan rate horizontal deflection circu

Details Drive circuit for multiple scan rate horizontal deflection circu Drive circuit for multiple scan rate horizontal deflection circu

1983-06-09

1986-12-30

Blum, Theodore M.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Cathode-ray deflections circuits

315408, H01J 2970, H01J 2976

Patent

active

046331468

ABSTRACT:
A drive circuit for a horizontal deflection circuit that is operable at a number of horizontal scan rates includes a pair of transistors coupled in a push-pull arrangement. The voltage supplies for the drive circuit transistors, which provide the forward and reverse drive for the horizontal output transistor, produce voltage levels that are dependent upon the horizontal scanning rate that is selected in order to minimize power dissipation during switching of the horizontal output transistor.

REFERENCES:
patent: 3491200 (1970-01-01), Wisnieff
patent: 3628083 (1971-12-01), Holmes et al.
patent: 3857059 (1974-12-01), Larson
patent: 3887842 (1975-06-01), Owens, Jr. et al.
patent: 3965390 (1976-06-01), Spencer, Jr.
patent: 4177393 (1979-12-01), Forster
patent: 4241296 (1980-12-01), Barter
patent: 4323826 (1982-04-01), Lehman
patent: 4353013 (1982-10-01), Lehman
patent: 4400653 (1983-08-01), Olmstead
Tektronix 690SR Television Color Monitor Instruction Manual, pp. 5-16 to 5-22 and Horizontal Deflection Schematic Diagram.

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