Filament circuit

The tungsten cathode needs to be heated for thermionic emission to take place. Thus a 10 voltage potential difference and 3-6 amperes of filament current is supplied, which forms the filament circuit

This should not be confused with tube current which determines the flow of electrons from the cathode to the anode.

Physics and imaging technology: x-ray
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Article information

rID: 29738
Section: Physics
Tag: refs
Synonyms or Alternate Spellings:

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