vacuum tube

(redirected from Tube amplifier)
Also found in: Dictionary, Thesaurus, Encyclopedia.

vac·uum tube

a glass tube from which the air has been removed, containing two or more electrodes, between which passes an electrical current or spark; used in the production of x-rays, or to control circuits. Previously in wide use, the vacuum tube has been supplanted by transistors in electronic circuits.
Farlex Partner Medical Dictionary © Farlex 2012

vacuum tube

A vessel of insulating material (usually glass) that is sealed and has a vacuum sufficiently high to permit the free flow of electrons between the electrodes that extend into the tube from the outside. In England, it is called a vacuum valve.
Medical Dictionary, © 2009 Farlex and Partners
References in periodicals archive ?
I am currently listening to a number of integrated tube amplifiers, and having a blast doing it.
AVA offers an eminently sensible rebuild of the unit that makes it into a reliable, good sounding tube amplifier that should provide years of trouble-free operation.
Unlike their big brothers (tube amplifiers) tube preamps are relatively low-power devices.
The DA-E750 is the company's first speaker dock and features Samsung's hybrid vacuum tube amplifier technology, a digital amplifier's clarity combined with rich sound performance of vacuum tubes.
M2 EQUITYBITES-February 13, 2013-Comtech's subsidiary awarded USD4.4m Travelling Wave Tube Amplifier order(C)2013 M2 COMMUNICATIONS http://www.m2.com
This model is the brand's biggest tube amplifier, and one piece goes to the Philippines, with a lot price starting with seven figures.
This new traveling wave tube amplifier (TWTA) offers 150-Watts of more power than the classic 500W Ka-Band amplifier and features 215W of linear power at -19 dB Noise Power Ratio (NPR) across the 27.5 to 30 GHz frequency range.
SSTL's state-of-the-art Galileo FOC payload comprises different units including European sourced atomic clocks, navigation signal generators, high power travelling wave tube amplifiers and antennas.