Television X-radiation protection device and circuit

Details Television X-radiation protection device and circuit Television X-radiation protection device and circuit

1971-04-21

1976-06-22

Miller, J. D.

Electric lamp and discharge devices: systems

Pulsating or a.c. supply

Plural load device systems

315119, 317 31, 317 51, 317 62, 328 9, 325362, H02H 300

Patent

active

039653935

ABSTRACT:
A color television receiver circuit for preventing excessive X-radiation is described. A spark gap is coupled between the high voltage supply for the color tube and ground. Should the high voltage output tend to exceed a level beyond which undesirable X-radiation may be emitted, the spark gap breaks down, effectively shorting the high voltage output to ground and preventing the excessive voltage condition. At the same time, the picture is eliminated and the viewer must have the set serviced. Two embodiments are described in detail. In one, the spark gap is built into the tube socket of a high voltage rectifier; in the other, the spark gap is incorporated into a voltage multiplier circuit.

REFERENCES:
patent: 3267321 (1966-08-01), Gessford
patent: 3546536 (1970-12-01), Umin

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