Electric lamp and discharge devices: systems – Plural power supplies – Plural cathode and/or anode load device
Patent
1976-03-30
1977-04-12
Segal, Robert
Electric lamp and discharge devices: systems
Plural power supplies
Plural cathode and/or anode load device
315169R, H05B 4300, H05B 4100, H05B 4130
Patent
active
040177629
ABSTRACT:
A circuit for supplying sustain voltage pulses to the orthogonal conductors of a gas display panel including voltage sensors to sense any change in sustain voltage amplitude with aging of the circuits and a voltage controlled oscillator to shift the operating frequency of sustain pulses as the amplitude changes. In that manner, the operating point of sustain voltage vs. frequency is shifted to take advantage of the slope in a graphical representation of sustain voltage margin to allow for shifting of the margin due to panel aging.
REFERENCES:
patent: 3801863 (1974-04-01), Lee
patent: 3839657 (1974-10-01), Nakayama et al.
patent: 3843905 (1974-10-01), Leuck et al.
Criscimagna Tony Nick
Steinmetz Michael J.
IBM Corporation
Robertson W. S.
Segal Robert
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