Method testing electron discharge tubes

Details Method testing electron discharge tubes Method testing electron discharge tubes

1989-09-05

1991-04-30

Wieder, Kenneth

Electricity: measuring and testing

Electric lamp or discharge device

Vacuum tube

445 3, 324410, H01J 942, G01R 3100

Patent

active

050121944

ABSTRACT:
A method of testing an electron discharge device incorporating a cathode electrode heated by bombardment of electrons emitted by a heater electrode so that selected parameters of such device may be determined without requiring that such device be operational, the method in particular including the steps of causing the cathode electrode to be brought to operating temperature within a short period of time and determining that the current due to electrons bombarding the cathode electrode is within predetermined limits.

REFERENCES:
patent: 2965839 (1960-12-01), Oakes
patent: 3801892 (1974-04-01), West
patent: 3817592 (1974-06-01), Swanson
patent: 4038616 (1977-07-01), Ball
patent: 4167690 (1979-09-01), Gange
patent: 4471265 (1984-09-01), Rasmusson
patent: 4534741 (1985-08-01), Farrall
patent: 4645988 (1987-02-01), Gawell et al.
patent: 4694225 (1987-09-01), Tomii et al.

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