- thermionic tube
-
a vacuum tube in which the cathode is heated electrically to cause the emission of electrons by thermal agitation. Also called hot-cathode tube.[1925-30]
* * *
Universalium. 2010.
thermionic tube
Look at other dictionaries:
thermionic tube — n. an electron tube having a cathode electrically heated in order to cause electron or ion emission: Also [Brit., etc.] Brit. thermionic valve … English World dictionary
thermionic tube — noun electronic device consisting of a system of electrodes arranged in an evacuated glass or metal envelope • Syn: ↑tube, ↑vacuum tube, ↑thermionic vacuum tube, ↑electron tube, ↑thermionic valve • Hypernyms: ↑electronic device … Useful english dictionary
thermionic valve — noun electronic device consisting of a system of electrodes arranged in an evacuated glass or metal envelope • Syn: ↑tube, ↑vacuum tube, ↑thermionic vacuum tube, ↑thermionic tube, ↑electron tube • Hypernyms: ↑electronic device … Useful english dictionary
thermionic vacuum tube — noun electronic device consisting of a system of electrodes arranged in an evacuated glass or metal envelope • Syn: ↑tube, ↑vacuum tube, ↑thermionic tube, ↑electron tube, ↑thermionic valve • Hypernyms: ↑electronic device … Useful english dictionary
tube — I (New American Roget s College Thesaurus) n. pipe, hose, conduit; tunnel, subway; slang, television. See passage. II (Roget s IV) n. 1. [A hollow cylinder] Syn. conduit, hose, test tube, tubing, tunnel, loom, subway; see also pipe 1 . 2. [A… … English dictionary for students
thermionic valve — (US thermionic tube) noun Electronics a vacuum tube giving a flow of thermionic electrons in one direction, used especially in the rectification of a current and in radio reception … English new terms dictionary
Tube electronique — Tube électronique Un tube électronique (vacuum tube en américain ou thermionic valve en anglais), également appelé tube à vide ou même lampe, est un composant électronique actif, généralement utilisé comme amplificateur de signal. Le tube à vide… … Wikipédia en Français
Tube à vide — Tube électronique Un tube électronique (vacuum tube en américain ou thermionic valve en anglais), également appelé tube à vide ou même lampe, est un composant électronique actif, généralement utilisé comme amplificateur de signal. Le tube à vide… … Wikipédia en Français
tube — ► NOUN 1) a long, hollow cylinder for conveying or holding liquids or gases. 2) a flexible metal or plastic container sealed at one end and having a cap at the other. 3) a hollow cylindrical organ or structure in an animal or plant. 4) Brit.… … English terms dictionary
thermionic converter — thermionic converter, an electronic device that changes heat directly into electricity. It consists of two metallic electrodes held in a tube at different temperatures and separated by a gas at low pressure. When the electrons on the surface of… … Useful english dictionary
