Device having thermionic cathode heated by field-emitted electro

Details Device having thermionic cathode heated by field-emitted electro Device having thermionic cathode heated by field-emitted electro

1977-03-31

1978-09-19

Chatmon, Jr., Saxfield

Electric lamp and discharge devices

Electrode and shield structures

Indirectly heated cathodes

H01J 120, H01J 1910

Patent

active

041157206

ABSTRACT:
Electronic device comprising an evacuated envelope containing a main thermionic cathode heated solely by energetic electrons emitted from an unheated auxiliary field-emission cathode.

REFERENCES:
patent: 2509053 (1950-05-01), Calbick
patent: 3440475 (1969-04-01), Schiller et al.
patent: 3745342 (1973-07-01), Le Poole
patent: 3928783 (1975-12-01), Hosoki et al.

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