Method for reducing residual spot in cathode ray tube

Details Method for reducing residual spot in cathode ray tube Method for reducing residual spot in cathode ray tube

1997-12-08

2000-02-01

Westin, Edward P.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Cathode-ray deflections circuits

315381, 315384, 315386, 315411, 348173, H01J 2952, G09G 104

Patent

active

060206934

ABSTRACT:
A method is provided for reducing a residual spot on a cathode ray tube when a power supply is turned off. The method is executed by applying a holding voltage being no less than the value of the voltage enabling to enhance the back raster luminance and a cut-off voltage, or a voltage of a lower value, to a second grid electrode while the anode voltage is lowered to a predetermined voltage value when the main power supply is turned off.

REFERENCES:
patent: 3863096 (1975-01-01), Sennik

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