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1 cycles/second
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2 угловая частота
1) Engineering: angular rate, angular velocity, circular frequency, cyclic frequency, phase rate, radian frequency2) Mathematics: angular frequency3) Railway term: cycles frequency4) Telecommunications: corner frequency5) Physics: pulsatance6) Electronics: pulsatance (переменного тока), pulsation (переменного тока), rate of phase change7) Automation: circular frequency (напр. колебаний)8) Makarov: angular speed, cyclical frequency9) Combustion gas turbines: cycle frequency -
3 круговая частота
1) Engineering: acyclic frequency, angular frequency, angular rate, angular velocity, circular frequency, cyclic frequency, phase rate, radian frequency2) Railway term: cycles frequency3) Electronics: rate of phase change4) Astronautics: gyrofrequency5) Atomic energy: pulsatance6) Cables: (угловая) angular velocity7) Makarov: cyclical frequency -
4 частота
1) General subject: freak, frequency, periodicity3) Aviation: regular flight4) Medicine: occurrence, rate (пульса)5) Military: (радио) frequency6) Engineering: line-locked frequency7) Construction: velocity8) Mathematics: frequency ratio, statistical frequency (статистическая)9) Railway term: cycles per second, periods per second, wave frequency11) Automobile industry: fineness12) Telecommunications: protected frequency13) Physics: frequence14) Astronautics: sampling rate15) Sakhalin energy glossary: return period (о землетрясениях и др. катаклизмах)17) Biometry: (абсолютная) absolute frequency19) Microsoft: frequency hopping20) Hi-Fi. frequency (число периодов за одну секунду. Измеряется в герцах (Гц) или циклах в секунду. Звуковой сигнал частотой 1000 Гц (1 кГц) означает 1000 периодов синусоидального сигнала в секунду)21) General subject: frequency (колебаний) -
5 Schalthäufigkeit
f <tech.allg> ■ frequency of operation; interruption frequency; opening frequency; operating duty; operating frequencyf <el> ■ frequency of make and break; switching frequencyf < msr> (von Sensoren; max. Impulsanzahl; in Hz) ■ switching frequency; frequency of operating cycles; operating frequency; switching rate; response frequency -
6 Schaltfrequenz
f <tech.allg> ■ switching frequencyf <el> (Wechselrichter; Anzahl Umschaltoperationen pro Sekunde) ■ switching frequency; switching ratef DIN EN 50 010 < msr> (von Sensoren; max. Impulsanzahl; in Hz) ■ switching frequency; frequency of operating cycles; operating frequency; switching rate; response frequency -
7 исследуем теперь
Исследуем теперьNext, we examine the influence of load reductions on the creep time.Since the period of application of the rapid loading cycles (t=0.15) was chosen quite arbitrarily, we now investigate the effect of the frequency of load cycles.Русско-английский научно-технический словарь переводчика > исследуем теперь
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8 Schalthäufigkeit
Schalthäufigkeit f 1. switching frequency [rate], frequency of operating cycles; 2. AP duty classificationDeutsch-Englisch Wörterbuch der Elektrotechnik und Elektronik > Schalthäufigkeit
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9 Alexanderson, Ernst Frederik Werner
[br]b. 25 January 1878 Uppsala, Swedend. ? 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 DistinctionsInstitution of Radio Engineers Medal of Honour 1919. President, IERE 1921. Edison Medal 1944.BibliographyPublications 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 ElectricalEngineers (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 AmericanInstitution of Electrical Engineers 59:937.Further ReadingE.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).KFBiographical history of technology > Alexanderson, Ernst Frederik Werner
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10 Hetzel, Max
[br]b. 5 March 1921 Basle, Switzerland[br]Swiss electrical engineer who invented the tuning-fork watch.[br]Hetzel trained as an electrical engineer at the Federal Polytechnic in Zurich and worked for several years in the field of telecommunications before joining the Bulova Watch Company in 1950. At that time several companies were developing watches with electromagnetically maintained balances, but they represented very little advance on the mechanical watch and the mechanical switching mechanism was unreliable. In 1952 Hetzel started work on a much more radical design which was influenced by a transistorized tuning-fork oscillator that he had developed when he was working on telecommunications. Tuning forks, whose vibrations were maintained electromagnetically, had been used by scientists during the nineteenth century to measure small intervals of time, but Niaudet- Breguet appears to have been the first to use a tuning fork to control a clock. In 1866 he described a mechanically operated tuning-fork clock manufactured by the firm of Breguet, but it was not successful, possibly because the fork did not compensate for changes in temperature. The tuning fork only became a precision instrument during the 1920s, when elinvar forks were maintained in vibration by thermionic valve circuits. Their primary purpose was to act as frequency standards, but they might have been developed into precision clocks had not the quartz clock made its appearance very shortly afterwards. Hetzel's design was effectively a miniaturized version of these precision devices, with a transistor replacing the thermionic valve. The fork vibrated at a frequency of 360 cycles per second, and the hands were driven mechanically from the end of one of the tines. A prototype was working by 1954, and the watch went into production in 1960. It was sold under the tradename Accutron, with a guaranteed accuracy of one minute per month: this was a considerable improvement on the performance of the mechanical watch. However, the events of the 1920s were to repeat themselves, and by the end of the decade the Accutron was eclipsed by the introduction of quartz-crystal watches.[br]Principal Honours and DistinctionsNeuchâtel Observatory Centenary Prize 1958. Swiss Society for Chronometry Gold Medal 1988.Bibliography"The history of the “Accutron” tuning fork watch", 1969, Swiss Watch \& Jewellery Journal 94:413–5.Further ReadingR.Good, 1960, "The Accutron", Horological Journal 103:346–53 (for a detailed technical description).J.D.Weaver, 1982, Electrical \& Electronic Clocks \& Watches, London (provides a technical description of the tuning-fork watch in its historical context).DV -
11 Giga HertZ
Abbreviation: GHz (unit of frequency, 1, 000, 000, 000 cycles per second) -
12 HertZ
Information technology: Hz (unit of frequency, cycles per second) -
13 Hertz
Information technology: Hz (unit of frequency, cycles per second) -
14 Kilo HertZ
Abbreviation: KHz (unit of frequency, 1000 cycles per second) -
15 Mega HertZ
Abbreviation: MHz (unit of frequency, 1, 000, 000 cycles per second) -
16 hertz
Information technology: Hz (unit of frequency, cycles per second) -
17 Schalthäufigkeit
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18 periodetall
subst. frequency, number of cycles -
19 выбирать таким, чтобы
Выбирать таким, чтобыThe value of the clock period selected is such that the analysis bandwidth conveniently spans the engine frequency range of interest.For the Monel K500, stress levels were selected with the intention of getting failures in the range of 1 to 5 x 106 cycles, predominantly.Русско-английский научно-технический словарь переводчика > выбирать таким, чтобы
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20 jaksoluku
technology• number of cyclestechnology• cycle• frequency
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См. также в других словарях:
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