Regulated deflection circuit

Details Regulated deflection circuit Regulated deflection circuit

1979-09-06

1981-03-03

Hubler, Malcolm F.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Cathode-ray deflections circuits

315411, H01J 2970

Patent

active

042543665

ABSTRACT:
Serially coupled first and second capacitors are charged from a DC source of unregulated input voltage through the primary winding of a flyback transformer of a horizontal deflection circuit. The voltage across the first capacitor is established as the voltage difference between the input voltage and the voltage across the second capacitor. The first capacitor functions as a trace capacitor for a horizontal deflection winding. A switch couples a trace voltage to the horizontal deflection winding to generate a trace deflection current. The switch also couples a first winding of a saturable reactor to the second capacitor to provide a capacitor discharge current path. A bias current flowing in a second winding of the saturable reactor varies the effective inductance of the first winding in response to energy level changes in the deflection circuit to control the voltage across the second capacitor.

REFERENCES:
patent: 3760222 (1973-09-01), Smith
patent: 4101815 (1978-07-01), Willis
patent: 4147964 (1979-04-01), Luz et al.
patent: 4176304 (1979-11-01), Scott

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