vacuum tube


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vacuum tube

n.
An electron tube from which all or most of the gas has been removed, permitting electrons to move with low interaction with any remaining gas molecules.

vacuum tube

or

vacuum valve

n
(Electronics) another name for valve3

vac′uum tube`


n.
an electron tube from which almost all air or gas has been evacuated.

vacuum tube

An electron tube from which all air has been removed so that the moving electrons don't collide with any gas particles and can move more efficiently from one electrode to the other. Cathode-ray tubes, which include television picture tubes and other video display tubes, are the most widely used vacuum tubes. Compare electron tube.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.vacuum tube - electronic device consisting of a system of electrodes arranged in an evacuated glass or metal envelopevacuum tube - electronic device consisting of a system of electrodes arranged in an evacuated glass or metal envelope
acorn tube - a small vacuum tube; used at high frequencies
anode - a positively charged electrode by which electrons leave an electrical device
cathode - a negatively charged electrode that is the source of electrons entering an electrical device
circuit, electric circuit, electrical circuit - an electrical device that provides a path for electrical current to flow
diode, rectifying tube, rectifying valve - a thermionic tube having two electrodes; used as a rectifier
electrode - a conductor used to make electrical contact with some part of a circuit
electronic device - a device that accomplishes its purpose electronically
electron multiplier - a vacuum tube that amplifies a flow of electrons
gas-discharge tube - a tube in which an electric discharge takes place through a gas
control grid, grid - an electrode placed between the cathode and anode of a vacuum tube to control the flow of electrons through the tube
klystron - an electron tube used to generate or amplify electromagnetic radiation in the microwave region by velocity modulation
magnetron - a diode vacuum tube in which the flow of electrons from a central cathode to a cylindrical anode is controlled by crossed magnetic and electric fields; used mainly in microwave oscillators
pentode - a thermionic tube having five electrodes
plate - the positively charged electrode in a vacuum tube
television pickup tube, television-camera tube - a tube that rapidly scans an optical image and converts it into electronic signals
tetrode - a thermionic tube having four electrodes
triode - a thermionic vacuum tube having three electrodes; fluctuations of the charge on the grid control the flow from cathode to anode which makes amplification possible
X-ray tube - a vacuum tube containing a metal target onto which a beam of electrons is directed at high energy for the generation of X rays
Translations
elektronka
elektroniputkityhjiöputki
elektronkaelektronska cijevvakuumska cijev
elektronenbuis
lampa próżniowa
References in periodicals archive ?
Blood can be collected directly with a vacuum tube, or first from a syringe and then directly transferred to a vacuum tube, all within a completely closed system, thus reducing the opportunity for nosocomial infections to enter the patient's bloodstream.
In the future, people shall travel through vacuum tubes at around 1000 km per hour.
Scherer and his research team are working on are nothing like classic vacuum tubes - according to the team, the structures are roughly 1,000x smaller than a human blood cell, which would make them 6-8nm.
The Vacuum Tube in Samsung's HT-E6750W is designed to provide immersive sound you within your content.
A maglev system in a vacuum tube wouldn't be slowed down by either friction or air resistance.
Our vacuum tube lamps will soon look as dated to us as the old radios, TV sets and computer monitors.
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.
Penta Laboratories, founded in 1951, is a Manufacturer and Distributor of Vacuum Tubes, Capacitors and Electron Tubes for Broadcast, Industrial, Marine, Medical, and Avionics applications worldwide.
India, May 23 -- A new vacuum tube lifter that incorporates a dual function pick-up head provides vacuum lifting for boxes and a hook for handling pails and similar loads has been introduced by Anver.
Q There is a debate at my institution regarding whether to use a syringe or vacuum tube for central-line blood draws.