Vertical deflection circuit for a camera tube in a television ca

Details Vertical deflection circuit for a camera tube in a television ca Vertical deflection circuit for a camera tube in a television ca

1979-01-18

1980-12-02

Blum, Theodore M.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Cathode-ray deflections circuits

358221, H01J 2970, H01J 2972

Patent

active

042374073

ABSTRACT:
A vertical deflection circuit is used in a camera tube in a color television camera in which the camera tube is provided with an optical filter having an optically black part extending in parallel with a beam scanning direction of the camera tube. A vertical deflection circuit comprises a circuit for generating a saw-tooth voltage for vertical deflection, a vertical deflection coil for the camera tube, and a circuit for supplying the saw-tooth voltage thus generated to one end of the vertical deflection coil in DC coupling. Due to temperature fluctuation, a vertical deflection width fluctuates with respect to a position corresponding to a black part of the filter, as a reference.

REFERENCES:
patent: 3558809 (1971-01-01), Aoki
patent: 3725727 (1973-04-01), Waehner
patent: 3737571 (1973-06-01), Gaebele et al.

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