electron tube


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electron tube

n.
A sealed enclosure, either highly evacuated or containing a controlled quantity of gas, in which electrons can be made sufficiently mobile to act as the principal carriers of current between at least one pair of electrodes.

electron tube

n
(Electronics) an electrical device, such as a valve, in which a flow of electrons between electrodes takes place. Also called: vacuum tube Sometimes shortened to: tube

elec′tron tube`


n.
an electronic device that consists typically of a sealed glass bulb containing two or more electrodes, used to generate, amplify, and rectify electric oscillations and alternating currents.

electron tube

A sealed glass tube containing either a vacuum or a small amount of gas, in which electrons move from a negatively charged electrode to a positively charged one. With the application and varying of an electric or magnetic field, the direction and number of electrons in the tube can be controlled. Electron tubes are used to amplify signals and change AC currents to DC currents. They have been mostly replaced by transistors but are still used in television screens and computer monitors and in microwave technology. Compare vacuum tube.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.electron tube - electronic device consisting of a system of electrodes arranged in an evacuated glass or metal envelopeelectron 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
References in periodicals archive ?
Products and markets covered in this report include Semiconductor & Other Electronic Component Manufacturing, Electron Tube Mfg, Transmittal, Industrial & Special-Purpose Electron Tubes (Except X-Ray), Transmittal/Ind.
After his discharge in June, 1954, he resumed his career with RCA in the Electron Tube Division.
The AN/MPQ-53 radar's cooling liquid electron tube (CLET) can run low on coolant.
Developed by Thales Microwave & Imaging Sub-systems R&D teams, both in France and Germany, TWT incorporates the performance and reliability of Thales' electron tube technology.
CATHODE--The electrode of an electrochemical cell at which reduction occurs; the negative terminal of an electrolytic cell; the positive terminal of a galvanic cell; the electron-emitting electrode of an electron tube.
Epcos AG, the passive components and electron tube joint venture with Japan's Matsushita Electric Industrial Co, is expected to list on the Frankfurt and New York Stock Exchanges next month, with both companies expected to reduce their stakes to 12.
He served in the Army as a Radio Operator and upon his discharge, he returned to RCA in the Electron Tube Division.
The passive components and electron tube business, now called Epcos AG, will list earlier than Infineon, in the last quarter of this year, with the second half of October as the most likely timeframe.
He invented the electron tube among his hundreds of patents and became known as the "father of radio.
Richardson Electronics, a world leading supplier of the highest quality replacement RF tubes with 60 years of expertise, is now offering the French made THALES electron tube line for use in industrial CO2 laser systems and provides installation support in select countries.
Because of the electron collection efficiency of the MSDC, power consumption is reduced by about one-half compared with any other electron tube or solid-state technology.
Delivery includes fully functional technological unit, which consists at least of a high vacuum process chamber and pumped independently filing chamber cooling system, the electron tube, the electron spectrometer for Auger electron spectroscopy analyzer for the detection of spin polarized electrons and secondary neutralization / dedusting ion source.

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