Gas and liquid contact apparatus – Contact devices – Rotating
Patent
1988-12-01
1990-02-27
Jennings, Derek S.
Gas and liquid contact apparatus
Contact devices
Rotating
361 93, 315411, 358243, H02H 320
Patent
active
049051164
ABSTRACT:
An X-radiation protection circuit in a television receiver is responsive to both high voltage and high beam current conditions. A first detector is interconnected with an electron beam power source and monitors the beam current therefrom. The first detector produces a first voltage proportional in magnitude to the electron beam current. A second detector monitors a high voltage transformer that produces a potential for operating on the electron beam and the second detector produces a second voltage that is proportional in magnitude to the high voltage potential. A monitoring circuit constantly monitors both the first and second voltages and produces a trigger signal whenever the additive sum of the first and second voltages exceeds a selected magnitude. In this manner, a trigger signal indicates an excessively high combination of electron beam current and high voltage. This circuit is constantly responsive to both high voltage and electrom beam current, and substantially independent of power supply voltage changes. In addition, a hold down circuit operates independently of the first and second detectors to produce the trigger signal whenever the high voltage potential exceeds a predetermined magnitude.
REFERENCES:
patent: 3789260 (1974-01-01), Ahrens
patent: 4045742 (1977-08-01), Meechan et al.
patent: 4074323 (1978-02-01), Griffey
patent: 4082986 (1978-04-01), Gamboa
patent: 4114072 (1978-09-01), Willis
patent: 4115814 (1978-09-01), Kosaka et al.
patent: 4213166 (1980-07-01), Watanabe
patent: 4233635 (1980-11-01), Suzuki
patent: 4321513 (1982-03-01), Knight
patent: 4389676 (1983-06-01), Balaban et al.
patent: 4390820 (1983-06-01), Willis
patent: 4692669 (1987-09-01), Black et al.
patent: 4749919 (1988-06-01), Beaumont et al.
patent: 4754206 (1988-06-01), Sorenson
Jennings Derek S.
North American Philips Corp.
Rich Marianne R.
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