Electric lamp and discharge devices: systems – Cathode ray tube circuits – Cathode-ray deflections circuits
Patent
1976-08-25
1979-01-16
Blum, Theodore M.
Electric lamp and discharge devices: systems
Cathode ray tube circuits
Cathode-ray deflections circuits
315411, 358190, 358243, H01J 2970
Patent
active
RE0298859
ABSTRACT:
A boosted B+ regulator in a horizontal deflection system adds a voltage derived from the deflection system to the line-rectified direct current voltage supplying the deflection system in such amount as to maintain a substantially constant boosted B+ supply voltage in the presence of variations of line voltage. Variations of the line-rectified voltage are sensed by a reference voltage network and added to a constant ramp voltage, the combination of voltages being applied to control the period of conduction of an active current conducting device which permits energy derived from the deflection system to be added to the line-rectified voltage supply for maintaining a regulated boosted supply voltage for the deflection system.
In one embodiment the energy derived from the deflection system is half-wave rectified by the active current conducting device. In a second embodiment the energy is full-wave rectified by the combination of the active current conducting device and an oppositely poled unidirectional current conducting device.
REFERENCES:
patent: B422156 (1976-03-01), Yasumatsuya et al.
patent: 3517253 (1970-06-01), Dietz
patent: 3626238 (1971-12-01), Forster
patent: 3641267 (1972-02-01), Cavallari
patent: 3726999 (1973-04-01), Dreiske
patent: 3737572 (1973-06-01), Frizane et al.
patent: 3949270 (1976-04-01), Akatsu et al.
patent: 3970780 (1976-07-01), Minoura
Bissinger, Norbert, Stabilized Power Supply for the Horizontal Output Stage, German Publication Funkschau, 1970, No. 11, pp. 363-366.
Blum Theodore M.
Laks Joseph
Rasmussen Paul J.
RCA Corporation
Whitacre E. M.
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