thermionic valve
English Thesaurus
1. electronic device consisting of a system of electrodes arranged in an evacuated glass or metal envelope (noun.artifact)
hypernym | : | electronic device, |
definition | : | a device that accomplishes its purpose electronically (noun.artifact) |
hyponym | : | acorn tube, |
definition | : | a small vacuum tube; used at high frequencies (noun.artifact) |
hyponym | : | electron multiplier, |
definition | : | a vacuum tube that amplifies a flow of electrons (noun.artifact) |
hyponym | : | gas-discharge tube, |
definition | : | a tube in which an electric discharge takes place through a gas (noun.artifact) |
hyponym | : | klystron, |
definition | : | an electron tube used to generate or amplify electromagnetic radiation in the microwave region by velocity modulation (noun.artifact) |
hyponym | : | magnetron, |
definition | : | 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 (noun.artifact) |
hyponym | : | pentode, |
definition | : | a thermionic tube having five electrodes (noun.artifact) |
hyponym | : | tetrode, |
definition | : | a thermionic tube having four electrodes (noun.artifact) |
hyponym | : | triode, |
definition | : | 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 (noun.artifact) |
hyponym | : | x-ray tube, |
definition | : | a vacuum tube containing a metal target onto which a beam of electrons is directed at high energy for the generation of X rays (noun.artifact) |
part holonym | : | anode, |
definition | : | a positively charged electrode by which electrons leave an electrical device (noun.artifact) |
part holonym | : | cathode, |
definition | : | a negatively charged electrode that is the source of electrons entering an electrical device (noun.artifact) |
part holonym | : | electrode, |
definition | : | a conductor used to make electrical contact with some part of a circuit (noun.artifact) |
part holonym | : | control grid, grid, |
definition | : | an electrode placed between the cathode and anode of a vacuum tube to control the flow of electrons through the tube (noun.artifact) |
part holonym | : | plate, |
definition | : | the positively charged electrode in a vacuum tube (noun.artifact) |
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