Indirectly-heated cathode device for electron tubes

Details Indirectly-heated cathode device for electron tubes Indirectly-heated cathode device for electron tubes

1978-03-22

1980-01-15

Chatmon, Jr., Saxfield

Electric lamp and discharge devices

Electrode and shield structures

Indirectly heated cathodes

313270, 313 40, 313 41, 427 77, 252518, H01J 120, H01J 1114

Patent

active

041841000

ABSTRACT:
An indirectly-heated cathode device for electron tubes, comprising a hollow cathode sleeve of thin wall, a base metal mounted to one end of the sleeve and having the surface coated with an electron-emitting material, and a heater mounted within the sleeve. The sleeve is made of Ni-Cr alloy containing 2 to 35% by weight of Cr and predetermined amounts of additives including Co, W, Mo and/or Fe.

REFERENCES:
patent: 3958146 (1976-05-01), Buescher et al.

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