fleming valve


fleming valve
\\“-\ noun
Usage: usually capitalized F
Etymology: after Sir John Ambrose Fleming died 1945 English electrical engineer, its inventor

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Electronics.
(formerly) a diode.
[named after Sir John Ambrose Fleming (1849-1945), English inventor and electrical engineer]

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Fleming valve,
Electronics. an early form of diode used to detect wireless telegraph messages: »

This so-called Fleming valve later became an amplifier by the addition of Lee De Forest's grid (H. H. Skilling).

[< Sir John Ambrose Fleming, 1849-1945, an English electrical engineer]

Useful english dictionary. 2012.

Look at other dictionaries:

  • Fleming valve — schematic from US Patent 803,684. The Fleming valve, also called the Fleming oscillation valve, was a vacuum tube diode invented by John Ambrose Fleming and used in the earliest days of radio communication. As the first vacuum tube, the IEEE has… …   Wikipedia

  • Fleming valve — Electronics. (formerly) a diode. [named after Sir John Ambrose Fleming (1849 1945), English inventor and electrical engineer] * * * …   Universalium

  • Fleming, Sir John Ambrose — ▪ British engineer born Nov. 29, 1849, Lancaster, Lancashire, Eng. died April 18, 1945, Sidmouth, Devon       English engineer who made numerous contributions to electronics, photometry, electric measurements, and wireless telegraphy.       After …   Universalium

  • valve — [ valv ] n. f. • 1752; « battant de porte » 1560; sens du lat. valva I ♦ 1 ♦ Chacune des deux parties de la coquille (dite bivalve) de certains mollusques et crustacés. « La valve rainurée d une coquille de Saint Jacques » (Proust). ♢ (1771) Bot …   Encyclopédie Universelle

  • valvé — valve [ valv ] n. f. • 1752; « battant de porte » 1560; sens du lat. valva I ♦ 1 ♦ Chacune des deux parties de la coquille (dite bivalve) de certains mollusques et crustacés. « La valve rainurée d une coquille de Saint Jacques » (Proust). ♢… …   Encyclopédie Universelle

  • Fleming — (Ian) (1908 1964) auteur anglais des James Bond (à partir de Casino royal, 1953). Fleming (Victor) (1883 1949) cinéaste américain: le Magicien d Oz (1939), Docteur Jekyll et M. Hyde (1941). Il signa seul Autant en emporte le vent (1939), mais d… …   Encyclopédie Universelle

  • Fleming — Flẹming,   1) Sir (seit 1944) Alexander, britischer Bakteriologe, * Lochfield (bei Ayr) 6. 8. 1881, ✝ London 11. 3. 1955; ab 1929 Professor in London; entdeckte während seiner Tätigkeit (ab 1906) am bakteriologischen Laboratorium im Londoner… …   Universal-Lexikon

  • Valve amplifier — A valve amplifier or tube amplifier is a type of electronic amplifier that make use of vacuum tubes instead of solid state semiconductor devices (such as transistors). As any other electronic amplifier they serve to increase the power and/or… …   Wikipedia

  • Valve de Fleming — Diode à vide Double diode 5Y3 Di …   Wikipédia en Français

  • Fleming , Sir John Ambrose — (1849–1945) British physicist and electrical engineer Fleming, who was born at Lancaster, studied for a short time at University College, London, but left before graduating. However, he continued his work for a science degree in his leisure hours …   Scientists