dispenser cathode

dispenser cathode

[də′spen·sər ‚kath‚ōd]
(electronics)
An electron tube cathode having provisions for continuously replacing evaporated electron-emitting material.
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References in periodicals archive ?
Tenders are invited for Supply of M-Type Dispenser Cathode.
During the past few years, Ceradyne has been able to successfully demonstrate that its patented cost effective dispenser cathode can be used in consumer television sets in order to produce sharper, brighter pictures that turn on almost instantly.
Waldal remains president of Semicon, located in Lexington, Kentucky, and directs operations, marketing and finance for that division's activities in ceramic impregnated dispenser cathodes and samarium cobalt permanent magnets, primarily for microwave tubes used in radar, satellite communications and military applications.