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1 Blumlein, Alan Dower
SUBJECT AREA: Aerospace, Broadcasting, Electronics and information technology, Photography, film and optics, Recording, Telecommunications[br]b. 29 June 1903 Hampstead, London, Englandd. 7 June 1942[br]English electronics engineer, developer of telephone equipment, highly linear electromechanical recording and reproduction equipment, stereo techniques, video and radar technology.[br]He was a very bright scholar and received a BSc in electrical technology from City and Guilds College in 1923. He joined International Western Electric (later to become Standard Telephone and Cables) in 1924 after a period as an instructor/demonstrator at City and Guilds. He was instrumental in the design of telephone measuring equipment and in international committee work for standards for long-distance telephony.From 1929 Blumlein was employed by the Columbia Graphophone Company to develop an electric recording cutterhead that would be independent of Western Electric's patents for the system developed by Maxfield and Harrison. He attacked the problems in a most systematic fashion, and within a year he had developed a moving-coil cutterhead that was much more linear than the iron-cored systems known at the time. Eventually Blumlein designed a complete line of recording equipment, from microphone and through-power amplifiers. The design was used by Columbia; after the merger with the Gramophone Company in 1931 to form Electrical and Musical Industries Ltd (later known as EMI) it became the company standard, certainly for coarse-groove records, until c.1950.Blumlein became interested in stereophony (binaural sound), and developed and demonstrated a complete line of equipment, from correctly placed microphones via two-channel records and stereo pick-ups to correctly placed loudspeakers. The advent of silent surfaces of vinyl records made this approach commercial from the late 1950s. His approach was independent and quite different from that of A.C. Keller.His extreme facility for creating innovative solutions to electronic problems was used in EMI's development from 1934 to 1938 of the electronic television system, which became the BBC standard of 405 lines after the Second World War, when television broadcasting again became possible. Independent of official requirements, EMI developed a 60 MHz radar system and Blumlein was involved in the development of a centimetric radar and display system. It was during testing of this aircraft mounted equipment that he was killed in a crash.[br]BibliographyBlumlein was inventor or co-inventor of well over 120 patents, a complete list of which is to be found in Burns (1992; see below). The major sound-recording achievements are documented by British patent nos. 350,954, 350,998, 363,627 (highly linear cutterhead, 1930) and 394,325 (reads like a textbook on stereo technology, 1931).Further ReadingThe definitive biography of Blumlein has not yet been written; the material seems to have been collected, but is not yet available. However, R.W.Burns, 1992, "A.D.Blumlein, engineer extraordinary", Engineering Science and Education Journal (February): 19– 33 is a thorough account. Also B.J.Benzimra, 1967, "A.D. Blumlein: an electronics genius", Electronics \& Power (June): 218–24 provides an interesting summary.GB-N -
2 Blumlein's ultralinear amplifier
Большой англо-русский и русско-английский словарь > Blumlein's ultralinear amplifier
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3 Blumlein's ultralinear amplifier
Англо-русский словарь технических терминов > Blumlein's ultralinear amplifier
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4 Blumlein's ultralinear amplifier
Техника: ультралинейный усилительУниверсальный англо-русский словарь > Blumlein's ultralinear amplifier
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5 Blumlein line
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6 ультралинейный усилитель
Большой англо-русский и русско-английский словарь > ультралинейный усилитель
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7 ультралинейный усилитель
Англо-русский словарь технических терминов > ультралинейный усилитель
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8 Shoenberg, Isaac
[br]b. 1 March 1880 Kiev, Ukrained. 25 January 1963 Willesden, London, England[br]Russian engineer and friend of Vladimir Zworykin; Director of Research at EMI, responsible for creating the team that successfully developed the world's first all-electronic television system.[br]After his initial engineering education at Kiev Polytechnic, Shoenberg went to London to undertake further studies at the Royal College of Science. In 1905 he returned to Russia and rose to become Chief Engineer of the Russian Wireless Telegraphy Company. He then returned to England, where he was a consultant in charge of the Patent Department and then joint General Manager of the Marconi Wireless Telegraphy Company (see Marconi). In 1929 he joined the Columbia Graphophone Company, but two years later this amalgamated with the Gramophone Company, by then known as His Master's voice (HMV), to form EMI (Electric and Musical Industries), a company in which the Radio Corporation of America (RCA) had a significant shareholding. Appointed Director of the new company's Research Laboratories in 1931, Shoenberg gathered together a team of highly skilled engineers, including Blumlein, Browne, Willans, McGee, Lubszynski, Broadway and White, with the objective of producing an all-electronic television system suitable for public broadcasting. A 150-line system had already been demonstrated using film as the source material; a photoemissive camera tube similar to Zworykin's iconoscope soon followed. With alternate demonstrations of the EMI system and the mechanical system of Baird arranged with the object of selecting a broadcast system for the UK, Shoenberg took the bold decision to aim for a 405-line "high-definition" standard, using interlaced scanning based on an RCA patent and further developed by Blumlein. This was so successful that it was formally adopted as the British standard in 1935 and regular broadcasts, the first in the world, began in 1937. It is a tribute to Shoenberg's vision and the skills of his team that this standard was to remain in use, apart from the war years, until finally superseded in 1985.[br]Principal Honours and DistinctionsKnighted 1954. Institution of Electrical Engineers Faraday Medal 1954.Further ReadingA.D.Blumlein et al., 1938, "The Marconi-EMI television system", Journal of the Institution of Electrical Engineers 83:729 (provides a description of the development of the 405-line system).For more background information, see Proceedings of the International Conference on the History of Television. From Early Days to the Present, November 1986, Institution of Electrical Engineers Publication No. 271.KF -
9 amplifier
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ac amplifier
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adder amplifier
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AGC amplifier
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all-pass amplifier
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amplitron amplifier
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amplitude-limiting amplifier
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antenna amplifier
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aperiodic amplifier
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audio amplifier
- audio distribution amplifier -
audio-frequency amplifier
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automatic gain control amplifier
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automatic stereophonic recording amplifier
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backward-wave amplifier
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backward-wave magnetron amplifier
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backward-wave parametric amplifier
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balanced amplifier
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bandpass amplifier
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band amplifier
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baseband amplifier
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beam parametric amplifier
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bistable amplifier
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Blumlein's ultralinear amplifier
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booster amplifier
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bootstrap amplifier
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bridge amplifier
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bridging amplifier
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broadband amplifier
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buck-boost amplifier
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buffer amplifier
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bullet amplifier
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burst amplifier
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calibrated amplifier
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camera amplifier
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capacitor transmitter amplifier
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cascaded amplifier
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cascade amplifier
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cascode amplifier
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cathode-coupled amplifier
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cathode amplifier
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cavity-type amplifier
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charger amplifier
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charge amplifier
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choke-capacitance coupled amplifier
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chopper amplifier
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chopper-stabilized amplifier
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chrominance amplifier
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clamped amplifier
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class-A amplifier
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class-B amplifier
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class-C amplifier
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class-D amplifier
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clipper amplifier
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coincidence amplifier
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cold cathode amplifier
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color-burst amplifier
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color-difference amplifier
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color-stabilizing amplifier
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common-base amplifier
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common-collector amplifier
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common-drain amplifier
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common-emitter amplifier
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common-gate amplifier
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common-source amplifier
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compensated amplifier
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complementary amplifier
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contact-modulated amplifier
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control amplifier
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coupling amplifier
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crossed-field amplifier
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cryogenicaliy cooled amplifier
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cryogenic amplifier
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current amplifier
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Darlington amplifier
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dc amplifier
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dc machine amplifier
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dc restoration amplifier
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deflection amplifier
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delayed-channel amplifier
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differential-input amplifier
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differential amplifier
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differentiating amplifier
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digitally controlled amplifier
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digital-proportional fluid amplifier
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direct-coupled amplifier
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display intensity amplifier
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distributed amplifier
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distributing amplifier
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double-ended amplifier
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drift-compensated amplifier
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drift-correcting amplifier
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drift-free amplifier
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driver amplifier
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dual operational amplifier
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dynamoclectric amplifier
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echo amplifier
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electrochemical amplifier
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electrometric amplifier
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electron wave magnetron amplifier
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electronic amplifier
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electronically tunable amplifier
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emitter-follower amplifier
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erase amplifier
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error amplifier
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extender amplifier
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fader amplifier
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fast amplifier
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feedback amplifier
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feedback stabilized amplifier
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feed-forward amplifier
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ferrite amplifier
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ferromagnetic amplifier
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field amplifier
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filter amplifier
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final amplifier
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fixed-gain amplifier
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fixed-tuned amplifier
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flat amplifier
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flat-staggered amplifier
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flip-flop amplifier
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fluid amplifier
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follow-up amplifier
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forward wave amplifier
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frame amplifier
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frequency-elimination amplifier
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frequency-rejection amplifier
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frequency-selective amplifier
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front-end amplifier
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front amplifier
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gain-controlled amplifier
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gain-matched amplifier
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gain-stabilized amplifier
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gamma amplifier
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gate amplifier
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gated amplifier
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grounded anode amplifier
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grounded-base amplifier
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grounded-cathode amplifier
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grounded-collector amplifier
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grounded-drain amplifier
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grounded-emitter amplifier
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grounded-gate amplifier
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grounded-plate amplifier
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grounded-source amplifier
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head amplifier
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head-end amplifier
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heterodyne amplifier
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hi-fi amplifier
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high-frequency amplifier
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high-gain amplifier
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high-voltage amplifier
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horizontal amplifier
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hybrid amplifier
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hydraulic amplifier
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image amplifier
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image-rejecting intermediate amplifier
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injection beam amplifier
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instrumentation amplifier
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integrated amplifier
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integrating amplifier
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intensity amplifier
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intermediate-frequency amplifier
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interphone amplifier
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in-turret amplifier
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inverting amplifier
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isolating amplifier
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klystron amplifier
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laminar proportional amplifier
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lap dissolve amplifier
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laser amplifier
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launch amplifier
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light amplifier
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limited-gain amplifier
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limiting amplifier
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line amplifier
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linear amplifier
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lock-in amplifier
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logarithmic amplifier
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log amplifier
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longitudinal beam amplifier
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low-current amplifier
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low-distortion amplifier
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low-drift amplifier
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low-frequency amplifier
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low-noise amplifier
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luminance amplifier
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magnetic amplifier
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magnetron amplifier
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masking amplifier
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master oscillator power amplifier
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matched amplifier
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matching amplifier
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matrix amplifier
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metal interface amplifier
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microphone amplifier
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microstrip amplifier
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microwave amplifier
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mix-effects amplifier
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modulated amplifier
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monitoring amplifier
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monitor amplifier
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mono amplifier
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M-type amplifier
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multichannel amplifier
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multimode amplifier
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multiple-loop feedback amplifier
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multistage amplifier
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muscle voltage amplifier
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narrow-band amplifier
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narrow-gate amplifier
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neutralized amplifier
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noise immune amplifier
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noiseless amplifier
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noise-suppressing amplifier
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noisy amplifier
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noninverting amplifier
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nonlinear amplifier
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note amplifier
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one-port amplifier
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operational amplifier
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optical amplifier
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optic amplifier
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optoelectronic amplifier
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overdriven amplifier
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packaged amplifier
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panoramic amplifier
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paramagnetic amplifier
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parametric amplifier
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parametric varactor amplifier
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paraphase amplifier
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peaked amplifier
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phase linear amplifier
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phase-sensitive amplifier
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photocurrent amplifier
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picture intermediate frequency amplifier
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pilot amplifier
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pip amplifier
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playback amplifier
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plug-in amplifier
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polarity-inverting amplifier
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portable amplifier
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power amplifier
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pressure-to-flow amplifier
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prime amplifier
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printed-circuit amplifier
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processing amplifier
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program amplifier
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programmable gain amplifier
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public-address amplifier
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pulse distribution amplifier
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pulsed amplifier
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pulse amplifier
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push-pull amplifier
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quadrature amplifier
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quantum amplifier
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quiescent amplifier
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radio-frequency amplifier
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RC amplifier
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reactance amplifier
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reciprocal amplifier
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recircufation zone amplifier
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recording amplifier
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reference amplifier
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reflex amplifier
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regenerative amplifier
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repeating amplifier
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reproducing amplifier
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resistance amplifier
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resistance-capacitance amplifier
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resistance-coupled amplifier
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resonance amplifier
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reversed-feedback amplifier
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rf amplifier
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rotary amplifier
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rotating magnetic amplifier
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rotating amplifier
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sample-and-hold amplifier
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sampling amplifier
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saturated amplifier
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selective amplifier
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self-balancing amplifier
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self-feedback amplifier
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self-saturating magnetic amplifier
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sense amplifier
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servo amplifier
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sharpener amplifier
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signal-frequency amplifier
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single-ended amplifier
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single-section amplifier
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single-sideband amplifier
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single-sided amplifier
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single-stage amplifier
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single-tuned amplifier
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small-signal amplifier
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source-follower amplifier
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space charge wave amplifier
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speech amplifier
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square-law amplifier
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squaring amplifier
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stabilized amplifier
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steffer amplifier
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step-up amplifier
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stereo amplifier
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straight amplifier
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summing amplifier
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superregenerative amplifier
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supersonic amplifier
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sweep amplifier
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switched gain amplifier
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synchronizing amplifier
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sync amplifier
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tandem amplifier
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tapered amplifier
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temperature-compensated amplifier
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threshold amplifier
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time-base amplifier
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torque amplifier
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track-and-hold amplifier
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transconductance amplifier
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transducer amplifier
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transferred electron amplifier
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transformer-coupled amplifier
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transimpedance amplifier
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transistor amplifier
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transmission-type amplifier
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transmission amplifier
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traveling wave tube amplifier
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trigger amplifier
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trunk amplifier
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tube amplifier
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tuned amplifier
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tunnel diode amplifier
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turbulence amplifier
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ultralincar amplifier
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uncompensated amplifier
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unity gain amplifier
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untapered amplifier
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untuned amplifier
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utility video amplifier
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valve amplifier
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variable-gain amplifier
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velocity-modulated amplifier
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vertical amplifier
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video amplifier
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video distribution amplifier
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video frequency amplifier
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voltage amplifier
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voltage-controlled amplifier
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vortex amplifier
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wide dynamic range amplifier
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wide-band amplifier
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X-axis amplifier
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X amplifier
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Y-amplifier
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YIG parametric amplifier
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zero-phase drift amplifier -
10 stereosonics
English-German dictionary of Electrical Engineering and Electronics > stereosonics
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11 Aerospace
See also: INDEX BY SUBJECT AREA[br]Caproni, Giovanni BattistaDassault, MarcelGiffard, Baptiste Henry JacquesJohnson, Clarence LeonardKorolov, Sergei PavlovichSopwith, Sir Thomas Octave MurdochTsiolkovsky, Konstantin Eduardovich -
12 Broadcasting
See also: INDEX BY SUBJECT AREA[br] -
13 Electronics and information technology
See also: INDEX BY SUBJECT AREA[br]Byron, Ada AugustaNapier, JohnRiche, Gaspard-Clair-François-MarieSchickhard, WilhelmBiographical history of technology > Electronics and information technology
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14 Goldmark, Peter Carl
[br]b. 2 December 1906 Budapest, Hungaryd. 7 December 1977 Westchester Co., New York, USA[br]Austro-Hungarian engineer who developed the first commercial colour television system and the long-playing record.[br]After education in Hungary and a period as an assistant at the Technische Hochschule, Berlin, Goldmark moved to England, where he joined Pye of Cambridge and worked on an experimental thirty-line television system using a cathode ray tube (CRT) for the display. In 1936 he moved to the USA to work at Columbia Broadcasting Laboratories. There, with monochrome television based on the CRT virtually a practical proposition, he devoted his efforts to finding a way of producing colour TV images: in 1940 he gave his first demonstration of a working system. There then followed a series of experimental field-sequential colour TV systems based on segmented red, green and blue colour wheels and drums, where the problem was to find an acceptable compromise between bandwidth, resolution, colour flicker and colour-image breakup. Eventually he arrived at a system using a colour wheel in combination with a CRT containing a panchromatic phosphor screen, with a scanned raster of 405 lines and a primary colour rate of 144 fields per second. Despite the fact that the receivers were bulky, gave relatively poor, dim pictures and used standards totally incompatible with the existing 525-line, sixty fields per second interlaced monochrome (black and white) system, in 1950 the Federal Communications Commission (FCC), anxious to encourage postwar revival of the industry, authorized the system for public broadcasting. Within eighteen months, however, bowing to pressure from the remainder of the industry, which had formed its own National Television Systems Committee (NTSC) to develop a much more satisfactory, fully compatible system based on the RCA three-gun shadowmask CRT, the FCC withdrew its approval.While all this was going on, Goldmark had also been working on ideas for overcoming the poor reproduction, noise quality, short playing-time (about four minutes) and limited robustness and life of the long-established 78 rpm 12 in. (30 cm) diameter shellac gramophone record. The recent availability of a new, more robust, plastic material, vinyl, which had a lower surface noise, enabled him in 1948 to reduce the groove width some three times to 0.003 in. (0.0762 mm), use a more lightly loaded synthetic sapphire stylus and crystal transducer with improved performance, and reduce the turntable speed to 33 1/3 rpm, to give thirty minutes of high-quality music per side. This successful development soon led to the availability of stereophonic recordings, based on the ideas of Alan Blumlein at EMI in the 1930s.In 1950 Goldmark became a vice-president of CBS, but he still found time to develop a scan conversion system for relaying television pictures to Earth from the Lunar Orbiter spacecraft. He also almost brought to the market a domestic electronic video recorder (EVR) system based on the thermal distortion of plastic film by separate luminance and coded colour signals, but this was overtaken by the video cassette recorder (VCR) system, which uses magnetic tape.[br]Principal Honours and DistinctionsInstitute of Electrical and Electronics Engineers Morris N.Liebmann Award 1945. Institute of Electrical and Electronics Engineers Vladimir K. Zworykin Award 1961.Bibliography1951, with J.W.Christensen and J.J.Reeves, "Colour television. USA Standard", Proceedings of the Institute of Radio Engineers 39: 1,288 (describes the development and standards for the short-lived field-sequential colour TV standard).1949, with R.Snepvangers and W.S.Bachman, "The Columbia long-playing microgroove recording system", Proceedings of the Institute of Radio Engineers 37:923 (outlines the invention of the long-playing record).Further ReadingE.W.Herold, 1976, "A history of colour television displays", Proceedings of the Institute of Electrical and Electronics Engineers 64:1,331.See also: Baird, John LogieKF -
15 Keller, Arthur
[br]b. 18 August 1901 New York City, New York, USA d. 1983[br]American engineer and developer of telephone switching equipment who was instrumental in the development of electromechanical recording and stereo techniques.[br]He obtained a BSc in electrical engineering at Cooper Union for the Advancement of Science and Art, New York, in 1923 and an MSc from Yale University, and he did postgraduate work at Columbia University. Most of the time he was also on the staff of the Bell Telephone Laboratories. The Bell Laboratories and its predecessors had a long tradition in research in speech and hearing, and in a team of researchers under H.C. Harrison, Keller developed a number of definite improvements in electrical pick-ups, gold-sputtering for matrix work and electrical disc recording equipment. From 1931 onwards the team at Bell Labs developed disc recording for moving pictures and entered into collaboration with Leopold Stokowski and the Philadelphia Orchestra concerning transmission and recording of high-fidelity sound over wires, and stereo techniques. Keller developed a stereo recording system for disc records independently of A.D. Blumlein that was used experimentally in the Bell Labs during the 1930s. During the Second World War Keller was in a team developing sonar (sound navigation and ranging) for the US Navy. After the war he concentrated on switching equipment for telephone exchanges and developed a miniature relay. In 1966 he retired from the Bell Laboratories, where he had been Director of several departments, ending as Director of the Switching Apparatus Laboratory. After retirement he was a consultant internationally, concerning electromechanical devices in particular. When, in 1980, the Bell Laboratories decided to issue LP re-recordings of a number of the experimental records made during the 1930s, Keller was brought in from retirement to supervise the project and decide on the selections.[br]BibliographyKeller was inventor or co-inventor of forty patents, including: US patent no. 2,114,471 (the principles of stereo disc recording); US patent no. 2,612,586 (tape guides with air lubrication); US patent no. 3,366,901 (a miniature crossbar switch).Apart from a large number of highly technical papers, Keller also wrote the article "Phonograph" in the 1950 and 1957 editions of Encyclopaedia Britannica.1986, Reflections of a Stereo Pioneer, San Francisco: San Francisco Press (an honest, personal account).GB-N -
16 Photography, film and optics
See also: INDEX BY SUBJECT AREA[br]Ding HuanGabor, DennisKlic, KarolLippershey, HansMarton, LadislausTournachon, Gaspard FélixBiographical history of technology > Photography, film and optics
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17 Recording
See also: INDEX BY SUBJECT AREA[br] -
18 Telecommunications
См. также в других словарях:
Blumlein — may refer to*Alan Blumlein, an electronics engineer. *Blumlein Pair, a stereo recording technique invented by Alan Blumlein. *Blumlein transmission line, used to create high voltage pulses with short rise and fall times. *Michael Blumlein, a… … Wikipedia
Blumlein — ist der Familienname folgender Persönlichkeiten: Alan Blumlein (1908–1942), englischer Erfinder, zum Beispiel des Blumlein Stereosystems Michael Blumlein (* 1948), US amerikanischer Schriftsteller Diese Seite ist ein … Deutsch Wikipedia
Blümlein — ist der Name von Barthel Blümlein (1511–1585), erster Deutscher in Chile Günter Blümlein (1943–2001), deutscher Unternehmer Siehe auch Blumlein Diese Seite ist eine Begriffsklä … Deutsch Wikipedia
Blümlein — 1. Das Blümlein Wohlgemuth ist für Trauern gut. 2. Ein Blümlein kann man wol malen, man kann aber kein Geruch dazu geben. – Henisch, 430. 3. Man hat das Blümlein zu früh gepflückt. Holl.: Het bloempje is te vroeg geplukt. (Harrebomée, I, 63.) 4.… … Deutsches Sprichwörter-Lexikon
Blumlein Pair — is the name for a stereo recording technique invented by Alan Blumlein for the creation of recordings that mdash; upon replaying through headphones or loudspeakers mdash; recreate the spatial characteristics of the recorded signal.The pair… … Wikipedia
Blumlein-Stereosystem — Das in den 1930er Jahren von Alan Blumlein entwickelte Blumlein Stereosystem beschreibt eine Stereoaufnahmetechnik mit zwei Mikrofonen. Das Blumlein Stereomikrofonsystem gehört nach Meinung einiger Forscher und Entwickler zu den bestklingenden… … Deutsch Wikipedia
Blümlein des Hl. Franziskus — Die Fioretti di San Francesco oder Blümlein des Hl. Franziskus sind ein in 53 kurze Kapitel eingeteiltes Florilegium über das Leben des Franz von Assisi. Der anonyme italienische Text des späten 14. Jahrhunderts, geschrieben vermutlich von einem… … Deutsch Wikipedia
Blümlein — Blüm|lein 〈n. 14; poet.〉 kleine, zarte Blume; Sy Blümelein … Universal-Lexikon
Blümlein — Blüm|lein … Die deutsche Rechtschreibung
Alan Blumlein — Alan Dower Blumlein (June 29, 1903 in Hampstead, London – June 7, 1942) was an electronics engineer who made many inventions in telecommunications, sound recording, stereo, television and radar. He received 128 patents.IntroductionAlan Dower… … Wikipedia
Alan Dower Blumlein — (* 29. Juni 1903 in Hampstead (London), Vereinigtes Königreich; † 7. Juni 1942 in London) war ein britischer Elektronikingenieur, der viele Erfindungen in der Nachrichtentechnik, in der Tonaufnahme, in der Stereofonie, der Schallplatte, beim… … Deutsch Wikipedia