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Filament
The heating element in an electron tube, also called the "heater". The filament heats the cathode to a very high temperature to boil off electrons, which are then collected by the plate. The filament can be seen as the glowing element through the holes in the plate of most tubes.
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- Part of Speech: noun
- Synonym(s):
- Blossary:
- Industry/Domain: Consumer electronics
- Category: Amplifier
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