Cathode structure for electron tube

Details Cathode structure for electron tube Cathode structure for electron tube

1982-12-01

1985-06-18

Moore, David K.

Electric lamp and discharge devices

With support and/or spacing structure for electrode and/or...

For indirectly heated cathode

313292, 313 38, 313340, 313337, H01J 194, H01J 126, H01J 1948

Patent

active

045242968

ABSTRACT:
A cathode structure includes a thermal conductive member, a heater for heating a thermal conductive member, a metal substrate having a first surface facing a thermal conductive member and a second surface and attached to the thermal conductive member to form a space between a central portion of a second surface and the thermal conductive member, and an electron emitting member provided on a second surface of a metal substrate.

REFERENCES:
patent: 3440475 (1969-03-01), Schiller et al.
patent: 3497757 (1970-01-01), Zalm et al.
patent: 4298814 (1981-11-01), Takanashi et al.
patent: 4355259 (1982-10-01), Weiss
Peterson et al., "Indirectly Heated Cathode Construction", RCA Technical Notes, No. 173, Aug. 1958.

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