High voltage generating apparatus for supplying high voltage to

Details High voltage generating apparatus for supplying high voltage to High voltage generating apparatus for supplying high voltage to

1988-04-29

1989-12-05

Tarcza, Thomas H.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Power supply from deflection circuit source

358190, 358243, H01J 2970, H04N 563, H04N 568

Patent

active

048855090

ABSTRACT:
A high voltage generating apparatus for supplying a high voltage to a cathode-ray tube is provided with a flyback transformer which has a low voltage coil and a high voltage coil.
A first circuit detects a quantity of current which flows in the low voltage coil, and a second circuit detects a quantity of current which flows in the high voltage coil. A thyristor turns on when the quantity of current of the first circuit becomes larger than that of the second circuit to fusing-disconnect a fuse connected to a power supplying circuit, thus stopping the operation of the flyback transformer.

REFERENCES:
patent: 4090111 (1978-05-01), Suzuki
patent: 4213166 (1980-07-01), Watanabe

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