Compensation for drift in a cathode ray tube
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United States of America Patent
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-
Dec 31, 1991
Grant Date -
N/A
app pub date -
Apr 26, 1990
filing date -
Apr 26, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A circuit which compensates for the effects of drift that occur during the operation of a cathode ray tube because of temperature changes or aging and which produces changes in intensity of the picture on the cathode ray tube by sensing the intensity changes and varying the bias on the second grid of the cathode ray tube to restore the desired intensity.
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