Limiting X-ray production in an operating CRT

Details Limiting X-ray production in an operating CRT Limiting X-ray production in an operating CRT

1991-10-01

1992-09-15

Blum, Theodore M.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Power supply from deflection circuit source

358190, 358243, H01J 2970

Patent

active

051480883

ABSTRACT:
A method and circuit for preventing excessive CRT X-ray production by continually measuring operating parameters of the CRT that are correlated with X-ray production during this operation. The measured parameters are continually compared with predetermined limit values, and various CRT operation controls are adjusted in response to the comparison to maintain the measured parameter values below the predetermined limit values.

REFERENCES:
patent: 4321513 (1982-03-01), Knight
patent: 4335335 (1982-06-01), Willis
patent: 4654717 (1987-03-01), Stoughton
patent: 4698557 (1987-10-01), Harlos
patent: 4792733 (1988-12-01), Redfern
"Automatic CRT Heater control", IBM Technical Disclosure Bulletin vol. 29, No. 9, Feb., 1987, pp. 3896-3898.

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