Hot cathode
id:
hot-cathode-266-17336310
title:
Hot cathode
text:
In vacuum tubes and gas-filled tubes, a hot cathode or thermionic cathode is a cathode electrode which is heated to make it emit electrons due to thermionic emission. This is in contrast to a cold cathode, which does not have a heating element. The heating element is usually an electrical filament heated by a separate electric current passing through it. Hot cathodes typically achieve much higher power density than cold cathodes, emitting significantly more electrons from the same surface area.
brand slug:
wiki
category slug:
encyclopedia
description:
Type of electrode
original url:
https://en.wikipedia.org/wiki/Hot_cathode
date created:
date modified:
2024-03-01T02:12:38Z
main entity:
{"identifier":"Q1365473","url":"https://www.wikidata.org/entity/Q1365473"}
image:
{"content_url":"https://upload.wikimedia.org/wikipedia/commons/d/dc/Thermionic_filament.jpg","width":731,"height":682}
fields total:
13
integrity:
15