East-west correction circuit

Details East-west correction circuit East-west correction circuit

1984-09-17

1987-01-06

Blum, Theodore M.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Cathode-ray deflections circuits

315408, H01J 2956

Patent

active

046349375

ABSTRACT:
In a deflection circuit, a flyback transformer and a retrace resonant circuit that includes a deflection winding are mutually coupled by a relatively small capacitor during the retrace interval so as to reduce transient distortions that may be caused by a sudden high beam current change. East-west modulation is provided to the deflection circuit output stage via an impedance having a relatively large value at the retrace frequency. A resonant circuit that includes the deflection winding and the flyback transformer is tuned to the retrace frequency. Synchronization information of the current through the deflection winding may be derived from a winding of the flyback transformer.

REFERENCES:
patent: 4140949 (1979-02-01), Terry
patent: 4329729 (1982-05-01), Knight
patent: 4429257 (1984-01-01), Haferl

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