thermionic tube
Học thuậtThân thiện
Definition
Noun: - An electronic device consisting of a system of electrodes arranged in an evacuated glass or metal envelope: A thermionic tube is a component that controls electric current flow in a high vacuum between electrodes to which an electric potential difference has been applied. It operates based on the principle of thermionic emission, where heated electrodes emit electrons.
Usage
- The term is used to describe a specific class of vintage or specialized electronic components.
- It is often found in historical, technical, or engineering contexts discussing electronics prior to the widespread adoption of transistors.
Examples
- Noun:
- The old radio was repaired by replacing the faulty thermionic tube.
- The amplifier's distinctive sound is due to its use of thermionic tubes rather than solid-state circuits.
Advanced Usage
- "Thermionic tube amplifier": An amplifier that uses thermionic tubes to increase the power of a signal.
- Audiophiles often prefer the warm sound of a thermionic tube amplifier.
Variants and Related Words
- Thermionic valve (n): A synonym, more commonly used in British English.
- The circuit diagram specified a particular type of thermionic valve.
- Vacuum tube (n): A general synonym, emphasizing the evacuated enclosure.
- Early computers were built using thousands of vacuum tubes.
- Electron tube (n): A synonym focusing on the flow of electrons.
- Valve (n): A common short form, especially in British English.
Synonyms
- Vacuum tube
- Thermionic valve
- Electron tube
- Valve (in electronics)
Related Phrases
- Tube radio: A radio receiver that uses thermionic tubes.
- Tube rectifier: A thermionic tube used to convert alternating current to direct current.
Noun
- electronic device consisting of a system of electrodes arranged in an evacuated glass or metal envelope