Cathode structure with emissive layer formed on a resistive...

Details Cathode structure with emissive layer formed on a resistive... Cathode structure with emissive layer formed on a resistive...

2005-07-12

2005-07-12

Patel, Nimeshkumar D. (Department: 2879)

Electric lamp and discharge devices

Discharge devices having a thermionic or emissive cathode

C313S309000, C313S336000, C313S338000, C313S351000, C313S495000, C445S024000, C445S025000, C445S050000

Reexamination Certificate

active

06917147

ABSTRACT:
A triode type cathode structure including a cathode assembly composed of a cathode electrode at least one electron emitter and a resistive layer inserted between the cathode electrode and the at least one electron emitter to connect them together electrically. The triode cathode structure also includes a grid electrode separated from the cathode assembly by a layer of electrical insulation. The cathode electrode is arranged in a first plane and the at least one electron emitter is arranged in a second plane parallel to the first plane and the cathode electrode and each electron emitter are separated by a same distance measured in a third plane parallel to the first and second planes.

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