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1 signal engineering laboratories
SEL, signal engineering laboratoriesEnglish-Russian dictionary of planing, cross-planing and slotting machines > signal engineering laboratories
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2 signal engineering laboratories
Военный термин: инженерно-технические лаборатории связи (СВ)Универсальный англо-русский словарь > signal engineering laboratories
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3 signal engineering laboratories
Military: SELУниверсальный русско-английский словарь > signal engineering laboratories
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4 signal corps engineering laboratories
Engineering: SCELУниверсальный русско-английский словарь > signal corps engineering laboratories
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5 signal corps engineering laboratories
Техника: технические лаборатории войск связиУниверсальный англо-русский словарь > signal corps engineering laboratories
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6 Army signal corps engineering laboratories
Engineering: ASCELУниверсальный русско-английский словарь > Army signal corps engineering laboratories
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7 Army signal corps engineering laboratories
Универсальный англо-русский словарь > Army signal corps engineering laboratories
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8 SEL
1) Военный термин: selected equipment list, signal engineering laboratories, support equipment list2) Техника: satellite-to-Earth link, selective3) Грубое выражение: Someone Else's Love4) Оптика: surface-emitting laser5) Телевидение: select7) Сокращение: Alcatel SEL AG (Germany), Selkup, Sexual Freedom League, Software Engineering Laboratory, Sound Effects Laboratory, selection, selectivity, selector8) Вычислительная техника: Software Evaluation Library, System Event Log( Журнал системных событий)9) Нефть: southeast line10) Транспорт: Single Engine, Land12) Образование: Social and Emotional Learning13) Складское дело: Shelf-edge label( ценник на полке)14) Полупроводники: surface emitting laser15) NYSE. Seligman Select Municipal Fund, Inc.16) Аэропорты: Seoul, Republic of Korea17) Программное обеспечение: Smart Electronic Locator -
9 Sel
1) Военный термин: selected equipment list, signal engineering laboratories, support equipment list2) Техника: satellite-to-Earth link, selective3) Грубое выражение: Someone Else's Love4) Оптика: surface-emitting laser5) Телевидение: select7) Сокращение: Alcatel SEL AG (Germany), Selkup, Sexual Freedom League, Software Engineering Laboratory, Sound Effects Laboratory, selection, selectivity, selector8) Вычислительная техника: Software Evaluation Library, System Event Log( Журнал системных событий)9) Нефть: southeast line10) Транспорт: Single Engine, Land12) Образование: Social and Emotional Learning13) Складское дело: Shelf-edge label( ценник на полке)14) Полупроводники: surface emitting laser15) NYSE. Seligman Select Municipal Fund, Inc.16) Аэропорты: Seoul, Republic of Korea17) Программное обеспечение: Smart Electronic Locator -
10 sel
1) Военный термин: selected equipment list, signal engineering laboratories, support equipment list2) Техника: satellite-to-Earth link, selective3) Грубое выражение: Someone Else's Love4) Оптика: surface-emitting laser5) Телевидение: select7) Сокращение: Alcatel SEL AG (Germany), Selkup, Sexual Freedom League, Software Engineering Laboratory, Sound Effects Laboratory, selection, selectivity, selector8) Вычислительная техника: Software Evaluation Library, System Event Log( Журнал системных событий)9) Нефть: southeast line10) Транспорт: Single Engine, Land12) Образование: Social and Emotional Learning13) Складское дело: Shelf-edge label( ценник на полке)14) Полупроводники: surface emitting laser15) NYSE. Seligman Select Municipal Fund, Inc.16) Аэропорты: Seoul, Republic of Korea17) Программное обеспечение: Smart Electronic Locator -
11 инженерно-технические лаборатории связи
Military: signal engineering laboratories (СВ)Универсальный русско-английский словарь > инженерно-технические лаборатории связи
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12 SEL
SEL, selected equipment list————————SEL, signal engineering laboratories————————SEL, support equipment listEnglish-Russian dictionary of planing, cross-planing and slotting machines > SEL
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13 инженерные лаборатории войск связи сухопутных войск
Engineering: Army signal corps engineering laboratoriesУниверсальный русско-английский словарь > инженерные лаборатории войск связи сухопутных войск
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14 технические лаборатории войск связи
Engineering: signal corps engineering laboratoriesУниверсальный русско-английский словарь > технические лаборатории войск связи
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15 Armstrong, Edwin Howard
[br]b. 18 December 1890 New York City, New York, USAd. 31 January 1954 New York City, New York, USA[br]American engineer who invented the regenerative and superheterodyne amplifiers and frequency modulation, all major contributions to radio communication and broadcasting.[br]Interested from childhood in anything mechanical, as a teenager Armstrong constructed a variety of wireless equipment in the attic of his parents' home, including spark-gap transmitters and receivers with iron-filing "coherer" detectors capable of producing weak Morse-code signals. In 1912, while still a student of engineering at Columbia University, he applied positive, i.e. regenerative, feedback to a Lee De Forest triode amplifier to just below the point of oscillation and obtained a gain of some 1,000 times, giving a receiver sensitivity very much greater than hitherto possible. Furthermore, by allowing the circuit to go into full oscillation he found he could generate stable continuous-waves, making possible the first reliable CW radio transmitter. Sadly, his claim to priority with this invention, for which he filed US patents in 1913, the year he graduated from Columbia, led to many years of litigation with De Forest, to whom the US Supreme Court finally, but unjustly, awarded the patent in 1934. The engineering world clearly did not agree with this decision, for the Institution of Radio Engineers did not revoke its previous award of a gold medal and he subsequently received the highest US scientific award, the Franklin Medal, for this discovery.During the First World War, after some time as an instructor at Columbia University, he joined the US Signal Corps laboratories in Paris, where in 1918 he invented the superheterodyne, a major contribution to radio-receiver design and for which he filed a patent in 1920. The principle of this circuit, which underlies virtually all modern radio, TV and radar reception, is that by using a local oscillator to convert, or "heterodyne", a wanted signal to a lower, fixed, "intermediate" frequency it is possible to obtain high amplification and selectivity without the need to "track" the tuning of numerous variable circuits.Returning to Columbia after the war and eventually becoming Professor of Electrical Engineering, he made a fortune from the sale of his patent rights and used part of his wealth to fund his own research into further problems in radio communication, particularly that of receiver noise. In 1933 he filed four patents covering the use of wide-band frequency modulation (FM) to achieve low-noise, high-fidelity sound broadcasting, but unable to interest RCA he eventually built a complete broadcast transmitter at his own expense in 1939 to prove the advantages of his system. Unfortunately, there followed another long battle to protect and exploit his patents, and exhausted and virtually ruined he took his own life in 1954, just as the use of FM became an established technique.[br]Principal Honours and DistinctionsInstitution of Radio Engineers Medal of Honour 1917. Franklin Medal 1937. IERE Edison Medal 1942. American Medal for Merit 1947.Bibliography1922, "Some recent developments in regenerative circuits", Proceedings of the Institute of Radio Engineers 10:244.1924, "The superheterodyne. Its origin, developments and some recent improvements", Proceedings of the Institute of Radio Engineers 12:549.1936, "A method of reducing disturbances in radio signalling by a system of frequency modulation", Proceedings of the Institute of Radio Engineers 24:689.Further ReadingL.Lessing, 1956, Man of High-Fidelity: Edwin Howard Armstrong, pbk 1969 (the only definitive biography).W.R.Maclaurin and R.J.Harman, 1949, Invention \& Innovation in the Radio Industry.J.R.Whitehead, 1950, Super-regenerative Receivers.A.N.Goldsmith, 1948, Frequency Modulation (for the background to the development of frequency modulation, in the form of a large collection of papers and an extensive bibliog raphy).KFBiographical history of technology > Armstrong, Edwin Howard
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16 SCEL
1) Военный термин: Signal Corps Evans Laboratory -
17 ASCEL
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18 ASCEL
Army signal corps engineering laboratories - инженерные лаборатории войск связи сухопутных войск -
19 SCEL
1. signal corps engineering laboratories - технические лаборатории войск связи;2. small-component evaluation loop - контур для оценки малоразмерных компонентов -
20 Colpitts, Edwin Henry
[br]b. 9 January 1872 Pointe de Bute, Canadad. 6 March 1949 Orange, New Jersey, USA[br]Canadian physicist and electrical engineer responsible for important developments in electronic-circuit technology.[br]Colpitts obtained Bachelor's degrees at Mount Allison University, Sackville, New Brunswick, and Harvard in 1894 and 1896, respectively, followed by a Master's degree at Harvard in 1897. After two years as assistant to the professor of physics there, he joined the American Bell Telephone Company. When the Bell Company was reorganized in 1907, he moved to the Western Electric branch of the company in New York as Head of the Physical Laboratories. In 1911 he became a director of the Research Laboratories, and in 1917 he became Assistant Chief Engineer of the company. During this time he invented both the push-pull amplifier and the Colpitts oscillator, both major developments in communications. In 1917, during the First World War, he spent some time in France helping to set up the US Signal Corps Research Laboratories. Afterwards he continued to do much, both technically and as a manager, to place telephone communications on a firm scientific basis, retiring as Vice-President of the Bell Telephone Laboratories in 1937. With the outbreak of the Second World War in 1941 he was recalled from retirement and appointed Director of the Engineering Foundation to work on submarine warfare techniques, particularly echo-ranging.[br]Principal Honours and DistinctionsOrder of the Rising Sun, Japan, 1938. US Medal of Merit 1948.Bibliography1919, with E.B.Craft, "Radio telephony", Proceedings of the American Institution of Electrical Engineers 38:337.1921, with O.B.Blackwell, "Carrier current telephony and telegraphy", American Institute of Electrical Engineers Transactions 40:205.11 September 1915, US reissue patent no. 15,538 (control device for radio signalling).28 August 1922, US patent no. 1,479,638 (multiple signal reception).Further ReadingM.D.Fagen, 1975, A History of Engineering \& Science in the Bell System, Vol. 1, Bell Laboratories.See also: Hartley, Ralph V.L.KF
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