Combined dynamic focus circuit flyback capacitor

Details Combined dynamic focus circuit flyback capacitor Combined dynamic focus circuit flyback capacitor

1981-09-28

1984-07-17

Blum, Theodore M.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Cathode-ray deflections circuits

315382, 315411, H01J 2970, H01J 2976

Patent

active

044608519

ABSTRACT:
In a cathode ray tube (CRT) display system utilizing a semiconductor switch in the output stage of the fast scan axis, a resonant circuit is coupled to the flyback circuit for production of a dynamic focus voltage. The capacitance required for the flyback circuit is derived from the equivalent capacitance of the dynamic focus resonant circuit, thereby eliminating the need for a separate flyback capacitor.

REFERENCES:
patent: 3146373 (1964-08-01), Janssen
patent: 3177396 (1965-04-01), Brooks
patent: 3501671 (1970-03-01), Buechel
patent: 3935529 (1976-01-01), Kalmanash et al.

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