Solid thermionic cathodes

Full Title

Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps (details of electron-optical or ion-optical arrangements H01J3/00) > Main electrodes > Solid thermionic cathodes

Child Classifications

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• H01J 1/135
• H01J 1/14 characterised by the material
• H01J 1/15 Cathodes heated directly by an electric current
• H01J 1/20 Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment