Horizontal deflection circuit including protection for output tr

Details Horizontal deflection circuit including protection for output tr Horizontal deflection circuit including protection for output tr

1979-05-29

1980-12-23

Hubler, Malcolm F.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Cathode-ray deflections circuits

315389, H01J 2970

Patent

active

042412960

ABSTRACT:
A circuit for driving and protecting the horizontal output transistor of a resonant raster scan display is disclosed. The driving circuitry described provides a circuit for separately establishing the currents required to turn a horizontal output transistor on and off. This transistor is turned on by a forward base current determined by beta requirements and turned off by a reverse base current equal to one half of the forward collector current. Protection against several common circuit failures is also incorporated in the circuit.

REFERENCES:
patent: 2964673 (1960-12-01), Stanley
patent: 3426245 (1969-02-01), Yurasek et al.
patent: 3786303 (1974-01-01), Hilburn
patent: 3983452 (1976-09-01), Bazin
patent: 4023069 (1977-05-01), Peer
patent: 4096416 (1978-06-01), Henley
patent: 4164688 (1979-08-01), Cushing

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