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THERMIONIC VALVE

(noun)
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Definitions

There is 1 meaning of the phrase Thermionic Valve.

Thermionic Valve - as a noun

Example Sentences

"The thermionic valve was used in early radios to amplify the electrical signals."
"After the invention of the transistor, the thermionic valve became obsolete."
"During World War II, thermionic valves were used in military radar systems."
"The technician replaced the faulty thermionic valve in the amplifier."
"The thermionic valve is also known as a vacuum tube."
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