Electron beam tube

Details Electron beam tube Electron beam tube

1979-02-15

1980-11-04

Lazarus, Richard B.

Electric lamp and discharge devices

With temperature modifier

For lead-in-seal or stem protection

313174, 313180, 313481, H01J 938

Patent

active

042316278

ABSTRACT:
An electron beam tube having a getter surface and an electrically heatable cathode whose heating power is less than 250 mW, is provided with a metal member and that member is supplied with heating power of 500 mW to 10 Watt to be heated temporarily to above temperature 800.degree. C., upon completion of evacuation of the tube and after production of the getter surface, to eliminate residual gas.

REFERENCES:
patent: 3149716 (1964-09-01), Papacosta et al.
patent: 3796917 (1974-03-01), Hiller
patent: 3952226 (1976-04-01), Turnbull
patent: 4018489 (1977-04-01), Miller et al.

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