Cathode ray tube digital brightness control circuit

Details Cathode ray tube digital brightness control circuit Cathode ray tube digital brightness control circuit

H - Electricity

04

N

355/3, 350/83

H04N 5/57 (2006.01)

Patent

CA 1207085

CATHODE RAY TUBE DIGITAL BRIGHTNESS CONTROL CIRCUIT Abstract In order to vary the brightness of the display produced by a cathode ray tube, a digital brightness control circuit is provided that utilizes a source of cathode control voltage connected to the cathode of the cathode ray tube, a brightness selector circuit which is connected to a digital counter, and a resistance network connected to the counter and the cathode control voltage source which is effective to vary in discrete increments the brightness of the cathode ray tube.

410197

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