Regulated deflection circuit

Details Regulated deflection circuit Regulated deflection circuit

1978-11-20

1980-07-22

Blum, Theodore M.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Cathode-ray deflections circuits

315411, H01J 2970, H01J 2976

Patent

active

042141893

ABSTRACT:
An input transformer primary winding is series coupled with an unregulated voltage source and a bidirectional switch. The secondary winding is coupled to a deflection circuit switch through a second switch. The transformer leakage inductance serves as the source input impedance. The transformer windings and second switch are so polarized as to provide for simultaneous conduction of the bidirectional and second switches. Regulation is achieved by varying the turn-on instant of the bidirectional switch within a deflection cycle. The bidirectional switch is commutated off by a resonant circuit coupled to the switch.

REFERENCES:
patent: 4034263 (1977-07-01), Dietz
patent: 4071810 (1978-01-01), Dobbert
Valvo Report, Thyristor H-Deflection Circuit With Network Isolation, RCA 72653-U.S. No. 955, 4-15-75.

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