Electron tube device and electron tube

Details Electron tube device and electron tube Electron tube device and electron tube

1989-04-13

1991-04-23

LaRoche, Eugene R.

Electric lamp and discharge devices: systems

With cathode or cathode heater supply circuit

Pulsating or a.c. supply to the cathode or heater circuit

315 94, 315309, 313422, 313364, H05B 4136

Patent

active

050102753

ABSTRACT:
An electron tube device comprising an electron tube having a line cathode, and an electric power source for supplying power pulses to the line cathode. The electron tube device comprises determination means for determining, during a power pulse, the value of a physical quantity which depends on the temperature of the line cathode, comparison means for comparing the value with a reference value and for supplying a control signal, and termination means to end the power pulse in dependence on the control signal. Consequently, the temperature of the line cathode is more stable.

REFERENCES:
patent: 4167690 (1979-09-01), Gange
patent: 4651058 (1987-03-01), Hamada et al.

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