Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment

Introduced: September 1968

Last revised: January 2006

Full Title

Details of vacuum tubes of the types covered by group > Electron-emitting electrodes; Cathodes > Thermionic cathodes > Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment

Classification Context

Section:: ELECTRICITY
Class:: ELECTRIC ELEMENTS
Subclass:: ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS

4 direct subcodes

Child Classifications

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H01J 19/16 Heaters
H01J 19/18 Insulating layer or body located between heater and emissive material
H01J 19/2 Supports for the emissive material
H01J 19/22 Dispenser-type cathodes, e.g. L-cathode