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thermionic tube
(redirected from vacuum tube)

   Also found in: Dictionary/thesaurus, Medical, Legal, Acronyms, Encyclopedia, Wikipedia 0.01 sec.

thermionic tube

Electronic tube, used in telegraphy and telephony and in radio and radar, using space conduction by thermionically emitted electrons from an electrically heated cathode. Classification is into diode, triode, and multi-electrode tubes, but in most applications they have been replaced by transistors.



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And transistors did not burn out like a vacuum tube It all Started with a simple integrated circuit board screwed onto a piece of plywood.
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