Spiked low-voltage aging of cathode-ray tubes

Details Spiked low-voltage aging of cathode-ray tubes Spiked low-voltage aging of cathode-ray tubes

H - Electricity

01

J

316/9

H01J 9/00 (2006.01) H01J 9/44 (2006.01)

Patent

CA 1110320

SPIKED LOW-VOLTAGE AGING OF CATHODE-RAY TUBES ABSTRACT During low voltage aging of a completely assembled cathode-ray tube, at least three voltage spikes at least three minutes apart are applied to the heater. Each spike has a voltage peak higher than the constant voltage applied to the heater during low voltage aging, and lasts for up to 120 seconds. This results in higher average emission levels and a reduced tendency of the emission levels to slump during emission testing of cathodes so processed.

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