Heater for indirect-heated cathode

Details Heater for indirect-heated cathode Heater for indirect-heated cathode

1985-12-19

1988-05-17

Moore, David K.

Electric lamp and discharge devices

Electrode and shield structures

Filament or resistance heated electrodes

313337, 313341, 313343, 313344, 313354, 313591, 313629, 427111, 428606, H01J 114, H01J 1706

Patent

active

047453257

ABSTRACT:
Disclosed is a heater for indirect-heated cathode having a heating element composed of a wire with a high specific resistance, such as titanium or titanium-based alloy, around which another wire with a low specific resistance is wound, and having a heat-resisting insulating material covering at least part of said heating element.

REFERENCES:
patent: 2103068 (1937-12-01), Fehse et al.
patent: 2155237 (1939-04-01), Perrott
patent: 2194678 (1940-03-01), Somers
patent: 3356883 (1967-12-01), Menelly et al.
patent: 4427916 (1984-01-01), Shroff

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