Electric lamp and discharge devices: systems – With cathode or cathode heater supply circuit – Automatic cut-out or voltage regulator in the cathode or...
Patent
1990-10-09
1993-02-09
Groody, James J.
Electric lamp and discharge devices: systems
With cathode or cathode heater supply circuit
Automatic cut-out or voltage regulator in the cathode or...
315106, H01J 2900
Patent
active
051855593
ABSTRACT:
An electron emission device is provided in which a drive current for driving an electron emission element is maintained at a constant level. The device comprises a transistor having its base provided with a divided voltage. The electron emission element is responsive to the transistor.
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Okunuki Masahiko
Shimizu Akira
Shimoda Isamu
Sugata Masao
Suzuki Akira
Canon Kabushiki Kaisha
Groody James J.
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