Electron gun for electronic tubes

Details Electron gun for electronic tubes Electron gun for electronic tubes

1985-03-06

1989-01-17

Moore, David K.

Electric lamp and discharge devices

Cathode ray tube

Ray generating or control

313454, 313349, H01J 2946

Patent

active

047989939

ABSTRACT:
In electron guns for electronic tubes, such as travelling wave tubes, for power modulating the electron beam, the distance between the cathode and the modulation grid increases the closer to the axis of the tube. Such a gun can be applied to travelling wave tubes operating with a zero enabling voltage and whose modulating frequency covers a very wide band.

REFERENCES:
patent: 2581243 (1952-01-01), Dodds
patent: 2889478 (1959-06-01), Rogers
patent: 3377492 (1968-04-01), Oess
patent: 3500110 (1970-03-01), Winsor
patent: 3852633 (1974-12-01), Hunter
patent: 4147953 (1979-04-01), Esterson
patent: 4321505 (1982-03-01), Miram et al.
patent: 4583021 (1986-04-01), Herriott et al.
patent: 4593230 (1986-06-01), True

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