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- Hot_cathode abstract "In vacuum tubes, a hot cathode or thermionic cathode is a cathode electrode which is heated to make it emit electrons due to thermionic emission. The heating element is usually an electrical filament. Hot cathodes typically achieve much higher power density than cold cathodes, emitting significantly more electrons from the same surface area. Cold cathodes rely on field electron emission or secondary electron emission from positive ion bombardment and do not require heating.From the 1920s to the 1960s, virtually every electronic device used hot cathode vacuum tubes. Today, hot cathodes are used as the source of electrons in fluorescent lamps, vacuum tubes, and electron guns in cathode ray tubes and laboratory equipment such as electron microscopes,".
- Hot_cathode thumbnail Thermionic_filament.jpg?width=300.
- Hot_cathode wikiPageExternalLink tubes201.
- Hot_cathode wikiPageID "2898953".
- Hot_cathode wikiPageRevisionID "605327125".
- Hot_cathode align "right".
- Hot_cathode caption "Cutaway view of a triode vacuum tube with an indirectly-heated cathode , showing the heater element inside".
- Hot_cathode caption "Two indirectly-heated cathodes in ECC83 dual triode tube".
- Hot_cathode direction "horizontal".
- Hot_cathode hasPhotoCollection Hot_cathode.
- Hot_cathode image "Dubulttriode darbiibaa.jpg".
- Hot_cathode image "Triode-english-text.svg".
- Hot_cathode width "137".
- Hot_cathode width "170".
- Hot_cathode subject Category:Accelerator_physics.
- Hot_cathode subject Category:Electrodes.
- Hot_cathode subject Category:Gas_discharge_lamps.
- Hot_cathode subject Category:Vacuum_tubes.
- Hot_cathode type Artifact100021939.
- Hot_cathode type Conductor103088707.
- Hot_cathode type Device103183080.
- Hot_cathode type DischargeLamp103206023.
- Hot_cathode type Electrode103274796.
- Hot_cathode type Electrodes.
- Hot_cathode type ElectronicDevice103277771.
- Hot_cathode type GasDischargeLamps.
- Hot_cathode type Instrumentality103575240.
- Hot_cathode type Lamp103636248.
- Hot_cathode type Object100002684.
- Hot_cathode type PhysicalEntity100001930.
- Hot_cathode type SourceOfIllumination104263760.
- Hot_cathode type Tube104494204.
- Hot_cathode type VacuumTubes.
- Hot_cathode type Whole100003553.
- Hot_cathode comment "In vacuum tubes, a hot cathode or thermionic cathode is a cathode electrode which is heated to make it emit electrons due to thermionic emission. The heating element is usually an electrical filament. Hot cathodes typically achieve much higher power density than cold cathodes, emitting significantly more electrons from the same surface area.".
- Hot_cathode label "Cátodo quente".
- Hot_cathode label "Glühkathode".
- Hot_cathode label "Hot cathode".
- Hot_cathode label "Termokatoda".
- Hot_cathode sameAs Glühkathode.
- Hot_cathode sameAs Termokatoda.
- Hot_cathode sameAs Cátodo_quente.
- Hot_cathode sameAs m.08b2vt.
- Hot_cathode sameAs Q1365473.
- Hot_cathode sameAs Q1365473.
- Hot_cathode sameAs Hot_cathode.
- Hot_cathode wasDerivedFrom Hot_cathode?oldid=605327125.
- Hot_cathode depiction Thermionic_filament.jpg.
- Hot_cathode isPrimaryTopicOf Hot_cathode.
