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  • 1 American institute of Electrical Engineers

    1. Американский институт инженеров-электриков

     

    Американский институт инженеров-электриков
    —
    [Я.Н.Лугинский, М.С.Фези-Жилинская, Ю.С.Кабиров. Англо-русский словарь по электротехнике и электроэнергетике, Москва]

    Тематики

    • электротехника, основные понятия

    EN

    Англо-русский словарь нормативно-технической терминологии > American institute of Electrical Engineers

  • 2 American Institute of Electrical Engineers

    Универсальный англо-русский словарь > American Institute of Electrical Engineers

  • 3 American Institute of Electrical Engineers

    Abbreviation: AIEE

    Универсальный русско-английский словарь > American Institute of Electrical Engineers

  • 4 american institute of electrical engineers

    Англо-русский словарь нефтегазовой промышленности > american institute of electrical engineers

  • 5 Associate of the American Institute of Electrical Engineers

    Универсальный русско-английский словарь > Associate of the American Institute of Electrical Engineers

  • 6 Institute

    - Institute for New Generation Computer Technology
    - Institute of Electrical and Electronics Engineers
    - Institute of High Fidelity
    - Institute of Molecular Manufacturing
    - Institute of Scientific Information
    - Institute of Telecommunications Engineers
    - American Institute of Radio Engineers
    - American National Standards Institute
    - British Standards Institute
    - Charles Babbage Institute
    - Computer Security Institute
    - European Telecommunications Standards Institute
    - National Institute of Standards and Technologies
    - Robot Institute of America
    - Software Engineering Institute
    - University of Southern California Information Sciences Institute

    English-Russian electronics dictionary > Institute

  • 7 Institute

    в соч.
    - American National Standards Institute
    - British Standards Institute
    - Charles Babbage Institute
    - Computer Security Institute
    - European Telecommunications Standards Institute
    - Institute for Certification of Computer Professionals
    - Institute for New Generation Computer Technology
    - Institute of Electrical and Electronics Engineers
    - Institute of High Fidelity
    - Institute of Molecular Manufacturing
    - Institute of Scientific Information
    - Institute of Telecommunications Engineers
    - National Institute of Standards and Technologies
    - Robot Institute of America
    - Software Engineering Institute
    - University of Southern California Information Sciences Institute

    The New English-Russian Dictionary of Radio-electronics > Institute

  • 8 Американский институт инженеров-электриков

    1. American institute of Electrical Engineers
    2. AIEE

     

    Американский институт инженеров-электриков
    —
    [Я.Н.Лугинский, М.С.Фези-Жилинская, Ю.С.Кабиров. Англо-русский словарь по электротехнике и электроэнергетике, Москва]

    Тематики

    • электротехника, основные понятия

    EN

    Русско-английский словарь нормативно-технической терминологии > Американский институт инженеров-электриков

  • 9 AIEE

    American Institute of Electrical Engineers - Институт инженеров-электриков США

    Англо-русский словарь технических аббревиатур > AIEE

  • 10 AIEE

    Англо-русский словарь промышленной и научной лексики > AIEE

  • 11 Black, Harold Stephen

    [br]
    b. 14 April 1898 Leominster, Massachusetts, USA
    d. 11 December 1983 Summitt, New Jersey, USA
    [br]
    American electrical engineer who discovered that the application of negative feedback to amplifiers improved their stability and reduced distortion.
    [br]
    Black graduated from Worcester Polytechnic Institute, Massachusetts, in 1921 and joined the Western Electric Company laboratories (later the Bell Telephone Laboratories) in New York City. There he worked on a variety of electronic-communication problems. His major contribution was the discovery in 1927 that the application of negative feedback to an amplifier, whereby a fraction of the output signal is fed back to the input in the opposite phase, not only increases the stability of the amplifier but also has the effect of reducing the magnitude of any distortion introduced by it. This discovery has found wide application in the design of audio hi-fi amplifiers and various control systems, and has also given valuable insight into the way in which many animal control functions operate.
    During the Second World War he developed a form of pulse code modulation (PCM) to provide a practicable, secure telephony system for the US Army Signal Corps. From 1963–6, after his retirement from the Bell Labs, he was Principal Research Scientist with General Precision Inc., Little Falls, New Jersey, following which he became an independent consultant in communications. At the time of his death he held over 300 patents.
    [br]
    Principal Honours and Distinctions
    Institute of Electronic and Radio Engineers Lamme Medal 1957.
    Bibliography
    1934, "Stabilised feedback amplifiers", Electrical Engineering 53:114 (describes the principles of negative feedback).
    21 December 1937, US patent no. 2,106,671 (for his negative feedback discovery.
    1947, with J.O.Edson, "Pulse code modulation", Transactions of the American Institute of Electrical Engineers 66:895.
    1946, "A multichannel microwave radio relay system", Transactions of the American Institute of Electrical Engineers 65:798.
    1953, Modulation Theory, New York: D.van Nostrand.
    1988, Laboratory Management: Principles \& Practice, New York: Van Nostrand Rheinhold.
    Further Reading
    For early biographical details see "Harold S. Black, 1957 Lamme Medalist", Electrical Engineering (1958) 77:720; "H.S.Black", Institute of Electrical and Electronics Engineers Spectrum (1977) 54.
    KF

    Biographical history of technology > Black, Harold Stephen

  • 12 Kennelly, Arthur Edwin

    [br]
    b. 17 December 1871 Colaba, Bombay, India
    d. 18 June 1939 Boston, Massachusetts, USA
    [br]
    Anglo-American electrical engineer who predicted the ionosphere and developed mathematical analysis for electronic circuits.
    [br]
    As a young man, Kennelly worked as office boy for a London engineering society, as an electrician and on a cable-laying ship. In 1887 he went to work for Thomas Edison at West Orange, New Jersey, USA, becoming his chief assistant. In 1894, with Edwin J.Houston, he formed the Philadelphia company of Houston and Kennelly, but eight years later he took up the Chair of Electrical Engineering at Harvard, a post he held until his retirement in 1930. In 1902 he noticed that the radio signals received by Marconi in Nova Scotia from the transmitter in England were stronger than predicted and postulated a reflecting ionized layer in the upper atmosphere. Almost simultaneously the same prediction was made in England by Heaviside, so the layer became known as the Kennelly-Heaviside layer. Throughout most of his working life Kennelly was concerned with the application of mathematical techniques, particularly the use of complex theory, to the analysis of electrical circuits. With others he also contributed to an understanding of the high-frequency skin-effect in conductors.
    [br]
    Principal Honours and Distinctions
    President, American Institute of Electrical Engineers 1898–1900. President, Institution of Electrical Engineers 1916. Institute of Electrical and Electronics Engineers Medal of Honour 1932; Edison Medal 1933.
    Bibliography
    1915, with F.A.Laws \& P.H.Pierce "Experimental research on the skin effect in conductors", Transactions of the American Institute of Electrical Engineers 34:1,953.
    1924, Hyperbolic Functions as Applied to Electrical Engineering.
    1924, Check Atlas of Complex Hyperbolic \& Circular Functions (both on mathematics for circuit analysis).
    Further Reading
    K.Davies, 1990, Ionospheric Radio, London: Peter Peregrinus. See also Appleton, Sir Edward Victor.
    KF

    Biographical history of technology > Kennelly, Arthur Edwin

  • 13 Sprague, Frank Julian

    [br]
    b. 25 July 1857 Milford, Connecticut, USA
    d. 25 October 1934 New York, USA
    [br]
    American electrical engineer and inventor, a leading innovator in electric propulsion systems for urban transport.
    [br]
    Graduating from the United States Naval Academy, Annapolis, in 1878, Sprague served at sea and with various shore establishments. In 1883 he resigned from the Navy and obtained employment with the Edison Company; but being convinced that the use of electricity for motive power was as important as that for illumination, in 1884 he founded the Sprague Electric Railway and Motor Company. Sprague began to develop reliable and efficient motors in large sizes, marketing 15 hp (11 kW) examples by 1885. He devised the method of collecting current by using a wooden, spring-loaded rod to press a roller against the underside of an overhead wire. The installation by Sprague in 1888 of a street tramway on a large scale in Richmond, Virginia, was to become the prototype of the universally adopted trolley system with overhead conductor and the beginning of commercial electric traction. Following the success of the Richmond tramway the company equipped sixty-seven other railways before its merger with Edison General Electric in 1890. The Sprague traction motor supported on the axle of electric streetcars and flexibly mounted to the bogie set a pattern that was widely adopted for many years.
    Encouraged by successful experiments with multiple-sheave electric elevators, the Sprague Elevator Company was formed and installed the first set of high-speed passenger cars in 1893–4. These effectively displaced hydraulic elevators in larger buildings. From experience with control systems for these, he developed his system of multiple-unit control for electric trains, which other engineers had considered impracticable. In Sprague's system, a master controller situated in the driver's cab operated electrically at a distance the contactors and reversers which controlled the motors distributed down the train. After years of experiment, Sprague's multiple-unit control was put into use for the first time in 1898 by the Chicago South Side Elevated Railway: within fifteen years multiple-unit operation was used worldwide.
    [br]
    Principal Honours and Distinctions
    President, American Institute of Electrical Engineers 1892–3. Franklin Institute Elliot Cresson Medal 1904, Franklin Medal 1921. American Institute of Electrical Engineers Edison Medal 1910.
    Bibliography
    1888, "The solution of municipal rapid transit", Trans. AIEE 5:352–98. See "The multiple unit system for electric railways", Cassiers Magazine, (1899) London, repub. 1960, 439–460.
    1934, "Digging in “The Mines of the Motor”", Electrical Engineering 53, New York: 695–706 (a short autobiography).
    Further Reading
    Lionel Calisch, 1913, Electric Traction, London: The Locomotive Publishing Co., Ch. 6 (for a near-contemporary view of Sprague's multiple-unit control).
    D.C.Jackson, 1934, "Frank Julian Sprague", Scientific Monthly 57:431–41.
    H.C.Passer, 1952, "Frank Julian Sprague: father of electric traction", in Men of Business, ed. W. Miller, Cambridge, Mass., pp. 212–37 (a reliable account).
    ——1953, The Electrical Manufacturers: 1875–1900, Cambridge, Mass. P.Ransome-Wallis (ed.), 1959, The Concise Encyclopaedia of World Railway
    Locomotives, London: Hutchinson, p. 143..
    John Marshall, 1978, A Biographical Dictionary of Railway Engineers, Newton Abbot: David \& Charles.
    GW / PJGR

    Biographical history of technology > Sprague, Frank Julian

  • 14 Alexanderson, Ernst Frederik Werner

    [br]
    b. 25 January 1878 Uppsala, Sweden
    d. ? May 1975 Schenectady, New York, USA
    [br]
    Swedish-American electrical engineer and prolific radio and television inventor responsible for developing a high-frequency alternator for generating radio waves.
    [br]
    After education in Sweden at the High School and University of Lund and the Royal Institution of Technology in Stockholm, Alexanderson took a postgraduate course at the Berlin-Charlottenburg Engineering College. In 1901 he began work for the Swedish C \& C Electric Company, joining the General Electric Company, Schenectady, New York, the following year. There, in 1906, together with Fessenden, he developed a series of high-power, high-frequency alternators, which had a dramatic effect on radio communications and resulted in the first real radio broadcast. His early interest in television led to working demonstrations in his own home in 1925 and at the General Electric laboratories in 1927, and to the first public demonstration of large-screen (7 ft (2.13 m) diagonal) projection TV in 1930. Another invention of significance was the "amplidyne", a sensitive manufacturing-control system subsequently used during the Second World War for controlling anti-aircraft guns. He also contributed to developments in electric propulsion and radio aerials.
    He retired from General Electric in 1948, but continued television research as a consultant for the Radio Corporation of America (RCA), filing his 321st patent in 1955.
    [br]
    Principal Honours and Distinctions
    Institution of Radio Engineers Medal of Honour 1919. President, IERE 1921. Edison Medal 1944.
    Bibliography
    Publications relating to his work in the early days of radio include: "Magnetic properties of iron at frequencies up to 200,000 cycles", Transactions of the American Institute of Electrical Engineers (1911) 30: 2,443.
    "Transatlantic radio communication", Transactions of the American Institute of Electrical
    Engineers (1919) 38:1,269.
    The amplidyne is described in E.Alexanderson, M.Edwards and K.Boura, 1940, "Dynamo-electric amplifier for power control", Transactions of the American
    Institution of Electrical Engineers 59:937.
    Further Reading
    E.Hawkes, 1927, Pioneers of Wireless, Methuen (provides an account of Alexanderson's work on radio).
    J.H.Udelson, 1982, The Great Television Race: A History of the American Television Industry 1925–1941, University of Alabama Press (provides further details of his contribution to the development of television).
    KF

    Biographical history of technology > Alexanderson, Ernst Frederik Werner

  • 15 Appleton, Sir Edward Victor

    [br]
    b. 6 September 1892 Bradford, England
    d. 21 April 1965 Edinburgh, Scotland
    [br]
    English physicist awarded the Nobel Prize for Physics for his discovery of the ionospheric layer, named after him, which is an efficient reflector of short radio waves, thereby making possible long-distance radio communication.
    [br]
    After early ambitions to become a professional cricketer, Appleton went to St John's College, Cambridge, where he studied under J.J.Thompson and Ernest Rutherford. His academic career interrupted by the First World War, he served as a captain in the Royal Engineers, carrying out investigations into the propagation and fading of radio signals. After the war he joined the Cavendish Laboratory, Cambridge, as a demonstrator in 1920, and in 1924 he moved to King's College, London, as Wheatstone Professor of Physics.
    In the following decade he contributed to developments in valve oscillators (in particular, the "squegging" oscillator, which formed the basis of the first hard-valve time-base) and gained international recognition for research into electromagnetic-wave propagation. His most important contribution was to confirm the existence of a conducting ionospheric layer in the upper atmosphere capable of reflecting radio waves, which had been predicted almost simultaneously by Heaviside and Kennelly in 1902. This he did by persuading the BBC in 1924 to vary the frequency of their Bournemouth transmitter, and he then measured the signal received at Cambridge. By comparing the direct and reflected rays and the daily variation he was able to deduce that the Kennelly- Heaviside (the so-called E-layer) was at a height of about 60 miles (97 km) above the earth and that there was a further layer (the Appleton or F-layer) at about 150 miles (240 km), the latter being an efficient reflector of the shorter radio waves that penetrated the lower layers. During the period 1927–32 and aided by Hartree, he established a magneto-ionic theory to explain the existence of the ionosphere. He was instrumental in obtaining agreement for international co-operation for ionospheric and other measurements in the form of the Second Polar Year (1932–3) and, much later, the International Geophysical Year (1957–8). For all this work, which made it possible to forecast the optimum frequencies for long-distance short-wave communication as a function of the location of transmitter and receiver and of the time of day and year, in 1947 he was awarded the Nobel Prize for Physics.
    He returned to Cambridge as Jacksonian Professor of Natural Philosophy in 1939, and with M.F. Barnett he investigated the possible use of radio waves for radio-location of aircraft. In 1939 he became Secretary of the Government Department of Scientific and Industrial Research, a post he held for ten years. During the Second World War he contributed to the development of both radar and the atomic bomb, and subsequently served on government committees concerned with the use of atomic energy (which led to the establishment of Harwell) and with scientific staff.
    [br]
    Principal Honours and Distinctions
    Knighted (KCB 1941, GBE 1946). Nobel Prize for Physics 1947. FRS 1927. Vice- President, American Institute of Electrical Engineers 1932. Royal Society Hughes Medal 1933. Institute of Electrical Engineers Faraday Medal 1946. Vice-Chancellor, Edinburgh University 1947. Institution of Civil Engineers Ewing Medal 1949. Royal Medallist 1950. Institute of Electrical and Electronics Engineers Medal of Honour 1962. President, British Association 1953. President, Radio Industry Council 1955–7. Légion d'honneur. LLD University of St Andrews 1947.
    Bibliography
    1925, joint paper with Barnett, Nature 115:333 (reports Appleton's studies of the ionosphere).
    1928, "Some notes of wireless methods of investigating the electrical structure of the upper atmosphere", Proceedings of the Physical Society 41(Part III):43. 1932, Thermionic Vacuum Tubes and Their Applications (his work on valves).
    1947, "The investigation and forecasting of ionospheric conditions", Journal of the
    Institution of Electrical Engineers 94, Part IIIA: 186 (a review of British work on the exploration of the ionosphere).
    with J.F.Herd \& R.A.Watson-Watt, British patent no. 235,254 (squegging oscillator).
    Further Reading
    Who Was Who, 1961–70 1972, VI, London: A. \& C.Black (for fuller details of honours). R.Clark, 1971, Sir Edward Appleton, Pergamon (biography).
    J.Jewkes, D.Sawers \& R.Stillerman, 1958, The Sources of Invention.
    KF

    Biographical history of technology > Appleton, Sir Edward Victor

  • 16 Warren, Henry Ellis

    SUBJECT AREA: Horology
    [br]
    b. 21 May 1872 Boston, Massachusetts, USA
    d. 21 September 1957 Ashland, Massachusetts, USA
    [br]
    American electrical engineer who invented the mains electric synchronous clock.
    [br]
    Warren studied electrical engineering at the Boston Institute of Technology (later to become the Massachusetts Institute of Technology) and graduated in 1894. In 1912 he formed the Warren Electric Clock Company to make a battery-powered clock that he had patented a few years earlier. The name was changed to the Warren Telechron (time at a distance) Company after he had started to produce synchronous clocks.
    In 1840 Charles Wheatstone had produced an electric master clock that produced an alternating current with a frequency of one cycle per second and which was used to drive slave dials. This system was not successful, but when Ferranti introduced the first alternating current power generator at Deptford in 1895 Hope-Jones saw in it a means of distributing time. This did not materialize immediately because the power generators did not control the frequency of the current with sufficient accuracy, and a reliable motor whose speed was related to this frequency was not available. In 1916 Warren solved both problems: he produced a reliable self-starting synchronous electric motor and he also made a master clock which could be used at the power station to control accurately the frequency of the supply. Initially the power-generating companies were reluctant to support the synchronous clock because it imposed a liability to control the frequency of the supply and the gain was likely to be small because it was very frugal in its use of power. However, with the advent of the grid system, when several generators were connected together, it became imperative to control the frequency; it was realized that although the power consumption of individual clocks was small, collectively it could be significant as they ran continuously. By the end of the 1930s more than half the clocks sold in the USA were of the synchronous type. The Warren synchronous clock was introduced into Great Britain in 1927, following the setting up of a grid system by the Electricity Commission.
    [br]
    Principal Honours and Distinctions
    Franklin Institute John Price Wetherill Medal. American Institute of Electrical Engineers Lamme Medal.
    Bibliography
    The patents for the synchronous motor are US patent nos. 1,283,432, 1,283,433 and 1,283,435, and those for the master clock are 1,283,431, 1,409,502 and 1,502,493 of 29 October 1918 onwards.
    1919, "Utilising the time characteristics of alternating current", Transactions of the American Institute of Electrical Engineers 38:767–81 (Warren's first description of his system).
    Further Reading
    J.M.Anderson, 1991, "Henry Ellis Warren and his master clocks", National Association of Watch and Clock Collectors Bulletin 33:375–95 (provides biographical and technical details).
    DV

    Biographical history of technology > Warren, Henry Ellis

  • 17 Thomson, Elihu

    SUBJECT AREA: Electricity
    [br]
    b. 29 March 1853 Manchester, England
    d. 13 March 1937 Swampscott, Massachusetts, USA
    [br]
    English (naturalized) American electrical engineer and inventor.
    [br]
    Thomson accompanied his parents to Philadelphia in 1858; he received his education at the Central High School there, and afterwards remained as a teacher of chemistry. At this time he constructed several dynamos after studying their design, and was invited by the Franklin Institute to give lectures on the subject. After observing an arc-lighting system operating commercially in Paris in 1878, he collaborated with Edwin J. Houston, a senior colleague at the Central High School, in working out the details of such a system. An automatic regulating device was designed which, by altering the position of the brushes on the dynamo commutator, maintained a constant current irrespective of the number of lamps in use. To overcome the problem of commutation at the high voltages necessary to operate up to forty arc lamps in a series circuit, Thomson contrived a centrifugal blower which suppressed sparking. The resulting system was efficient and reliable with low operating costs. Thomson's invention of the motor meter in 1882 was the first of many such instruments for the measurement of electrical energy. In 1886 he invented electric resistance welding using low-voltage alternating current derived from a transformer of his own design. Thomson's work is recorded in his technical papers and in the 700plus patents granted for his inventions.
    The American Electric Company, founded to exploit the Thomson patents, later became the Thomson-Houston Company, which was destined to be a leader in the electrical manufacturing industry. They entered the field of electric power in 1887, supplying railway equipment and becoming a major innovator of electric railways. Thomson-Houston and Edison General Electric were consolidated to form General Electric in 1892. Thomson remained associated with this company throughout his career.
    [br]
    Principal Honours and Distinctions
    Chevalier and Officier de la Légion d'honneur 1889. American Academy of Arts and Sciences Rumford Medal 1901. American Institute of Electrical Engineers Edison Medal 1909. Royal Society Hughes Medal 1916. Institution of Electrical Engineers Kelvin Medal 1923, Faraday Medal 1927.
    Bibliography
    1934, "Some highlights of electrical history", Electrical Engineering 53:758–67 (autobiography).
    Further Reading
    D.O.Woodbury, 1944, Beloved Scientist, New York (a full biography). H.C.Passer, 1953, The Electrical Manufacturers: 1875–1900, Cambridge, Mass, (describes Thomson's industrial contribution).
    K.T.Compton, 1940, Biographical Memoirs of Elihu Thomson, Washington, DCovides an abridged list of Thomson's papers and patents).
    GW

    Biographical history of technology > Thomson, Elihu

  • 18 Nyquist, Harry

    [br]
    b. 7 February 1889 Nilsby, Sweden
    d. 4 April 1976 Texas, USA
    [br]
    Swedish-American engineer who established the formula for thermal noise in electrical circuits and the stability criterion for feedback amplifiers.
    [br]
    Nyquist (original family name Nykvist) emigrated from Sweden to the USA when he was 18 years old and settled in Minnesota. After teaching for a time, he studied electrical engineering at the University of North Dakota, gaining his first and Master's degrees in 1915 and 1916, and his PhD from Yale in 1917. He then joined the American Telegraph \& Telephone Company, moving to its Bell Laboratories in 1934 and remaining there until his retirement in 1954. A prolific inventor, he made many contributions to communication engineering, including the invention of vestigial-side band transmission. In the late 1920s he analysed the behaviour of analogue and digital signals in communication circuits, and in 1928 he showed that the thermal noise per unit bandwidth is given by 4 kT, where k is Boltzmann's constant and T the absolute temperature. However, he is best known for the Nyquist Criterion, which defines the conditions necessary for the stable, oscillation-free operation of amplifiers with a closed feedback loop. The problem of how to realize these conditions was investigated by his colleague Hendrik Bode.
    [br]
    Principal Honours and Distinctions
    Franklin Institute Medal 1960. Institute of Electrical and Electronics Engineers Medal of Honour 1960; Mervin J.Kelly Award 1961.
    Bibliography
    1924, "Certain factors affecting telegraph speed", Bell System Technical Journal 3:324. 1928, "Certain topics in telegraph transmission theory", Transactions of the American
    Institute of Electrical Engineers 47:617.
    1928, "Thermal agitation of electric charge in conductors", Physical Review 32:110. 1932, "Regeneration theory", Bell System Technical Journal 11:126.
    1940, with K.Pfleger, "Effect of the quadrature component in single-sideband transmission", Bell System Technical Journal 19:63.
    Further Reading
    Bell Telephone Laboratories, 1975, Mission Communications.
    KF

    Biographical history of technology > Nyquist, Harry

  • 19 Donkin, Bryan IV

    [br]
    b. 29 April 1903 London, England
    d. 17 October 1964 Albury, Surrey, England
    [br]
    English electrical engineer.
    [br]
    Bryan Donkin IV was the son of S.B.Donkin (1871–1952) and the great-great-grandson of Bryan Donkin I (1768–1855). He was educated at Gresham's School in Holt, and at Pembroke College, Cambridge. He served a three-year apprenticeship with the English Electric Company Ltd, followed by a special one-year course with the General Electric Company of America. He became a partner in the consulting firm of Kennedy \& Donkin in 1933 (see Donkin, Bryan III) and was associated with the construction of 132 kV and 275 kV overhead-transmission lines in Britain and with many electricity generating schemes. He was responsible for the design of the Pimlico district heating scheme, and was a member of the Institution of Civil Engineers, the Institution of Electrical Engineers and the American Institute of Electrical Engineers.
    [br]
    Principal Honours and Distinctions
    President, Association of Supervising Electrical Engineers 1954–6. President, Engineer's Guild 1954–6. President, Junior Institution of Engineers 1956–7. Vice-President, Institution of Electrical Engineers 1960–4.
    RTS

    Biographical history of technology > Donkin, Bryan IV

  • 20 Colpitts, Edwin Henry

    [br]
    b. 9 January 1872 Pointe de Bute, Canada
    d. 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 Distinctions
    Order of the Rising Sun, Japan, 1938. US Medal of Merit 1948.
    Bibliography
    1919, 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 Reading
    M.D.Fagen, 1975, A History of Engineering \& Science in the Bell System, Vol. 1, Bell Laboratories.
    KF

    Biographical history of technology > Colpitts, Edwin Henry

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  • Institute of Radio Engineers — Das Institute of Radio Engineers, abgekürzt IRE, war von 13. Mai 1912 bis 1. Januar 1963 ein amerikanischer Berufsverband von Ingenieuren aus den Bereichen Elektrotechnik mit Sitz in New York City. Anfang 1963 entstand aus dem Zusammenschluss der …   Deutsch Wikipedia

  • American Society of Mechanical Engineers — Die American Society of Mechanical Engineers (ASME) ist ein Berufsverband der Maschinenbauingenieure in den USA. Der Verband mit Sitz in New York City wurde 1880 gegründet und umfasst rund 120.000 Mitglieder (Stand 2005). Der Verband konzentriert …   Deutsch Wikipedia

  • American Institute of Mining, Metallurgical, and Petroleum Engineers — The American Institute of Mining, Metallurgical, and Petroleum Engineers (AIME) is a professional body for mining and metallurgy, with 90,000 members. It was founded in 1871 by 22 mining engineers in Wilkes Barre, Pennsylvania, United States,… …   Wikipedia

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