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1 triode oscillator
triode oscillator Triodenoszillator mEnglish-German dictionary of Electrical Engineering and Electronics > triode oscillator
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2 triode oscillator
nELECTRON oscilador de triodo m -
3 triode oscillator
மூவாயலையம் -
4 triode oscillator
triyotlu osilatör -
5 X-band triode oscillator
Техника: генератор на триоде X-диапазонаУниверсальный англо-русский словарь > X-band triode oscillator
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6 triode
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7 oscillator triode
• генераторен триодEnglish-Bulgarian polytechnical dictionary > oscillator triode
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8 XTO
1) Техника: crystal oscillator2) Электроника: X-band Triode Oscillator3) NYSE. XTO Energy Inc. (formerly Cross Timbers Oil Company) -
9 XTO
1. crystal oscillator - кварцевый генератор;2. X-band triode oscillator - генератор на триоде Х-диапазона -
10 De Forest, Lee
SUBJECT AREA: Broadcasting, Electronics and information technology, Photography, film and optics, Recording, Telecommunications[br]b. 26 August 1873 Council Bluffs, Iowa, USAd. 30 June 1961 Hollywood, California, USA[br]American electrical engineer and inventor principally known for his invention of the Audion, or triode, vacuum tube; also a pioneer of sound in the cinema.[br]De Forest was born into the family of a Congregational minister that moved to Alabama in 1879 when the father became President of a college for African-Americans; this was a position that led to the family's social ostracism by the white community. By the time he was 13 years old, De Forest was already a keen mechanical inventor, and in 1893, rejecting his father's plan for him to become a clergyman, he entered the Sheffield Scientific School of Yale University. Following his first degree, he went on to study the propagation of electromagnetic waves, gaining a PhD in physics in 1899 for his thesis on the "Reflection of Hertzian Waves from the Ends of Parallel Wires", probably the first US thesis in the field of radio.He then joined the Western Electric Company in Chicago where he helped develop the infant technology of wireless, working his way up from a modest post in the production area to a position in the experimental laboratory. There, working alone after normal working hours, he developed a detector of electromagnetic waves based on an electrolytic device similar to that already invented by Fleming in England. Recognizing his talents, a number of financial backers enabled him to set up his own business in 1902 under the name of De Forest Wireless Telegraphy Company; he was soon demonstrating wireless telegraphy to interested parties and entering into competition with the American Marconi Company.Despite the failure of this company because of fraud by his partners, he continued his experiments; in 1907, by adding a third electrode, a wire mesh, between the anode and cathode of the thermionic diode invented by Fleming in 1904, he was able to produce the amplifying device now known as the triode valve and achieve a sensitivity of radio-signal reception much greater than possible with the passive carborundum and electrolytic detectors hitherto available. Patented under the name Audion, this new vacuum device was soon successfully used for experimental broadcasts of music and speech in New York and Paris. The invention of the Audion has been described as the beginning of the electronic era. Although much development work was required before its full potential was realized, the Audion opened the way to progress in all areas of sound transmission, recording and reproduction. The patent was challenged by Fleming and it was not until 1943 that De Forest's claim was finally recognized.Overcoming the near failure of his new company, the De Forest Radio Telephone Company, as well as unsuccessful charges of fraudulent promotion of the Audion, he continued to exploit the potential of his invention. By 1912 he had used transformer-coupling of several Audion stages to achieve high gain at radio frequencies, making long-distance communication a practical proposition, and had applied positive feedback from the Audion output anode to its input grid to realize a stable transmitter oscillator and modulator. These successes led to prolonged patent litigation with Edwin Armstrong and others, and he eventually sold the manufacturing rights, in retrospect often for a pittance.During the early 1920s De Forest began a fruitful association with T.W.Case, who for around ten years had been working to perfect a moving-picture sound system. De Forest claimed to have had an interest in sound films as early as 1900, and Case now began to supply him with photoelectric cells and primitive sound cameras. He eventually devised a variable-density sound-on-film system utilizing a glow-discharge modulator, the Photion. By 1926 De Forest's Phonofilm had been successfully demonstrated in over fifty theatres and this system became the basis of Movietone. Though his ideas were on the right lines, the technology was insufficiently developed and it was left to others to produce a system acceptable to the film industry. However, De Forest had played a key role in transforming the nature of the film industry; within a space of five years the production of silent films had all but ceased.In the following decade De Forest applied the Audion to the development of medical diathermy. Finally, after spending most of his working life as an independent inventor and entrepreneur, he worked for a time during the Second World War at the Bell Telephone Laboratories on military applications of electronics.[br]Principal Honours and DistinctionsInstitute of Electronic and Radio Engineers Medal of Honour 1922. President, Institute of Electronic and Radio Engineers 1930. Institute of Electrical and Electronics Engineers Edison Medal 1946.Bibliography1904, "Electrolytic detectors", Electrician 54:94 (describes the electrolytic detector). 1907, US patent no. 841,387 (the Audion).1950, Father of Radio, Chicago: WIlcox \& Follett (autobiography).De Forest gave his own account of the development of his sound-on-film system in a series of articles: 1923. "The Phonofilm", Transactions of the Society of Motion Picture Engineers 16 (May): 61–75; 1924. "Phonofilm progress", Transactions of the Society of Motion Picture Engineers 20:17–19; 1927, "Recent developments in the Phonofilm", Transactions of the Society of Motion Picture Engineers 27:64–76; 1941, "Pioneering in talking pictures", Journal of the Society of Motion Picture Engineers 36 (January): 41–9.Further ReadingG.Carneal, 1930, A Conqueror of Space (biography).I.Levine, 1964, Electronics Pioneer, Lee De Forest (biography).E.I.Sponable, 1947, "Historical development of sound films", Journal of the Society of Motion Picture Engineers 48 (April): 275–303 (an authoritative account of De Forest's sound-film work, by Case's assistant).W.R.McLaurin, 1949, Invention and Innovation in the Radio Industry.C.F.Booth, 1955, "Fleming and De Forest. An appreciation", in Thermionic Valves 1904– 1954, IEE.V.J.Phillips, 1980, Early Radio Detectors, London: Peter Peregrinus.KF / JW -
11 detector
1) обнаружитель2) детектор; демодулятор•- acquisition and tracking detector
- activation detector
- active bubble detector
- air pollution detector
- amplifying semiconductor detector
- amplitude detector
- amplitude-sensitive area detector
- analog detector
- anode detector
- anode-bend detector
- average detector
- badge -detector
- balance detector
- balanced detector
- baseband detector
- beat-note detector
- boron-coated semiconductor detector
- boxcar detector
- break-in detector
- bridge detector
- broad-band detector
- bubble detector
- bubble stretching detector
- capacitance-operated intrusion detector
- Cerenkov detector
- charge detector
- charge emission detector
- chevron expander detector
- Chinese letter bubble detector
- cloud-height detector
- coherent detector
- coincidence detector
- color phase detector
- compensated semiconductor detector
- contact detector
- correlation detector
- crack detector
- cross-correlation detector
- cross-tie/Bloch-llne detector
- crystal detector
- crystal conduction detector
- current-leak detector
- difference detector
- differential dE/dx semiconductor detector
- differential null detector
- diffused junction semiconductor detector
- diode detector
- Doppler detector
- double-tuned detector
- driving-point impedance detector
- dropout detector
- edge detector
- electrode cable detector
- electrolytic detector
- electromagnetic crack detector
- enhancement/thresholding edge detector
- envelope detector
- error detector
- feature detector
- fine tracking detector
- first detector
- flaw detector
- fluorescent radiation detector
- flux transition detector
- FM detector
- Foster-Seeley detector
- frequency detector
- frequency-difference detector
- galvanomagnetic bubble detector
- gamma-ray detector
- gas detector
- gas flow radiation detector
- gate detector
- gated-beam tube detector
- gated optical detector
- glass detector
- glow discharge detector
- go-no-go detector
- grid detector
- grid-leak detector
- ground detector
- heat detector
- heterodyne detector
- high-level detector
- hot-carrier detector
- hot-electron detector
- humidity detector
- inductive loop bubble detector
- infinite-impedance detector
- infrared detector
- infrared heterodyne detector
- in-phase detector
- input detector
- in-range frequency detector
- interference detector
- interfinger detector
- internal gas detector
- intruder detector
- ionization detector
- Josephson-effect detector
- klystron detector
- large-signal detector
- laser radiation detector
- leak detector
- light detector
- light-sensitive detector
- linear detector
- liquid-crystal area detector
- liquid-evaporation light detector
- lithium-coated semiconductor detector
- lithium-drifted semiconductor detector
- locked-oscillator detector
- low-level detector
- magnetic airborne detector
- magnetic-bubble detector
- magnetic flaw detector
- magnetic tunable detector
- magnetooptical bubble detector
- magnetoresistive bubble detector
- magnetostrictive-piezoelectric bubble detector
- maser detector
- mask edge detector
- maximum-likelihood detector
- metal detector
- microwave detector
- middle-infrared detector
- missing-pulse detector
- mixer detector
- mixer-first detector
- mosaic detector
- movement detector
- moving-target detector
- moving-window detector
- narrow-band detector
- narrow-field -detector
- nonlinear detector
- null detector
- null-point detector
- optical detector
- optical heterodyne detector
- oscillator-mixer-first detector
- parallel diode detector
- passive bubble detector
- peak detector
- PEM detector
- phase detector
- phase-discriminating detector
- phase-frequency detector
- phase-lock detector
- phase-sensitive detector
- photoconductive detector
- photodielectric detector
- photoelectric detector
- photoelectromagnetic detector
- photoemissive detector
- photoluminescence detector
- photon detector
- photoparametric detector
- photovoltaic detector
- pitch detector
- plate detector
- plate -circuit detector
- pneumatic detector
- position-sensitive detector
- power detector
- presence detector
- primary detector
- proximity detector
- pulse detector
- push-pull detector
- pyroelectric detector
- quadrature detector
- quadrature-grid FM detector
- quasi-peak detector
- radiac detector
- radiation detector
- radio-frequency metal detector
- radiometric detector
- ratio detector
- recycling detector
- regenerative detector
- remote detector
- resistance temperature detector
- resistance thermal detector
- resistance thermometer detector
- ringing detector
- rms detector
- root-mean-square detector
- sampling phase detector
- sawtooth phase detector
- scintillation detector
- second detector
- secondary emission detector
- seismic detector
- selective detector
- self-powered neutron detector
- self-quenched detector
- self-quenching detector
- semiconductor detector
- serpentine bubble detector
- sign detector
- signal detector
- signal quality detector
- silence detector
- slope detector
- small-signal detector
- smoke detector
- solid-state detector
- spark detector
- speech detector
- spread-spectrum detector
- square-law detector
- standing-wave detector
- superconducting magnetic flux detector
- superregenerative detector
- suppressed-carrier signal detector
- surface-barrier semiconductor detector
- switch detector
- synchronous detector
- thallium-activated sodium iodide detector
- thermal detector
- thermal-type infrared detector
- thermionic detector
- thermoluminescent detector
- thick-film bubble detector
- thin-film bubble detector
- threshold detector
- totally depleted semiconductor detector
- tracking detector
- transfer-impedance detector
- transition radiation detector
- transmission semiconductor detector
- traveling detector
- triangular phase detector
- triode detector
- tuned detector
- ultrasonic detector
- ultrasonic flaw detector
- vacuum-leak detector
- vibration detector
- video detector
- voice detector
- voice activity detector
- voiced-unvoiced detector
- voltage limit detector
- wide-field detector
- zero-crossing detector
- 2π-radiation detector
- 4π-radiation detector -
12 detector
1) обнаружитель2) детектор; демодулятор•- 4π radiation detector
- acoustic bubble detector
- acquisition and tracking detector
- activation detector
- active bubble detector
- air pollution detector
- amplifying semiconductor detector
- amplitude detector
- amplitude-sensitive area detector
- analog detector
- anode detector
- anode-bend detector
- average detector
- badge-detector
- balance detector
- balanced detector
- baseband detector
- beat-note detector
- boron-coated semiconductor detector
- boxcar detector
- break-in detector
- bridge detector
- broad-band detector
- bubble detector
- bubble stretching detector
- capacitance-operated intrusion detector
- Cerenkov detector
- charge detector
- charge emission detector
- chevron expander detector
- Chinese letter bubble detector
- cloud-height detector
- coherent detector
- coincidence detector
- color phase detector
- compensated semiconductor detector
- contact detector
- correlation detector
- crack detector
- cross-correlation detector
- cross-tie/Bloch-llne detector
- crystal conduction detector
- crystal detector
- current-leak detector
- difference detector
- differential dE/dx semiconductor detector
- differential null detector
- diffused junction semiconductor detector
- diode detector
- Doppler detector
- double-tuned detector
- driving-point impedance detector
- dropout detector
- edge detector
- electrode cable detector
- electrolytic detector
- electromagnetic crack detector
- enhancement/thresholding edge detector
- envelope detector
- error detector
- feature detector
- fine tracking detector
- first detector
- flaw detector
- fluorescent radiation detector
- flux transition detector
- FM detector
- Foster-Seeley detector
- frequency detector
- frequency-difference detector
- galvanomagnetic bubble detector
- gamma-ray detector
- gas detector
- gas flow radiation detector
- gate detector
- gated optical detector
- gated-beam tube detector
- glass detector
- glow discharge detector
- go-no-go detector
- grid detector
- grid-leak detector
- ground detector
- heat detector
- heterodyne detector
- high-level detector
- hot-carrier detector
- hot-electron detector
- humidity detector
- inductive loop bubble detector
- infinite-impedance detector
- infrared detector
- infrared heterodyne detector
- in-phase detector
- input detector
- in-range frequency detector
- interference detector
- interfinger detector
- internal gas detector
- intruder detector
- ionization detector
- Josephson-effect detector
- klystron detector
- large-signal detector
- laser radiation detector
- leak detector
- light detector
- light-sensitive detector
- linear detector
- liquid-crystal area detector
- liquid-evaporation light detector
- lithium-coated semiconductor detector
- lithium-drifted semiconductor detector
- locked-oscillator detector
- low-level detector
- magnetic airborne detector
- magnetic flaw detector
- magnetic tunable detector
- magnetic-bubble detector
- magnetooptical bubble detector
- magnetoresistive bubble detector
- magnetostrictive-piezoelectric bubble detector
- maser detector
- mask edge detector
- maximum-likelihood detector
- metal detector
- microwave detector
- middle-infrared detector
- missing-pulse detector
- mixer detector
- mixer-first detector
- mosaic detector
- movement detector
- moving-target detector
- moving-window detector
- narrow-band detector
- narrow-field-detector
- nonlinear detector
- null detector
- null-point detector
- optical detector
- optical heterodyne detector
- oscillator-mixer-first detector
- parallel diode detector
- passive bubble detector
- peak detector
- PEM detector
- phase detector
- phase-discriminating detector
- phase-frequency detector
- phase-lock detector
- phase-sensitive detector
- photoconductive detector
- photodielectric detector
- photoelectric detector
- photoelectromagnetic detector
- photoemissive detector
- photoluminescence detector
- photon detector
- photoparametric detector
- photovoltaic detector
- pitch detector
- plate detector
- plate-circuit detector
- pneumatic detector
- position-sensitive detector
- power detector
- presence detector
- primary detector
- proximity detector
- pulse detector
- push-pull detector
- pyroelectric detector
- quadrature detector
- quadrature-grid FM detector
- quasi-peak detector
- radiac detector
- radiation detector
- radio-frequency metal detector
- radiometric detector
- ratio detector
- recycling detector
- regenerative detector
- remote detector
- resistance temperature detector
- resistance thermal detector
- resistance thermometer detector
- ringing detector
- rms detector
- root-mean-square detector
- sampling phase detector
- sawtooth phase detector
- scintillation detector
- second detector
- secondary emission detector
- seismic detector
- selective detector
- self-powered neutron detector
- self-quenched detector
- self-quenching detector
- semiconductor detector
- serpentine bubble detector
- sign detector
- signal detector
- signal quality detector
- silence detector
- slope detector
- small-signal detector
- smoke detector
- solid-state detector
- spark detector
- speech detector
- spread-spectrum detector
- square-law detector
- standing-wave detector
- superconducting magnetic flux detector
- superregenerative detector
- suppressed-carrier signal detector
- surface-barrier semiconductor detector
- switch detector
- synchronous detector
- thallium-activated sodium iodide detector
- thermal detector
- thermal-type infrared detector
- thermionic detector
- thermoluminescent detector
- thick-film bubble detector
- thin-film bubble detector
- threshold detector
- totally depleted semiconductor detector
- tracking detector
- transfer-impedance detector
- transition radiation detector
- transmission semiconductor detector
- traveling detector
- triangular phase detector
- triode detector
- tuned detector
- ultrasonic detector
- ultrasonic flaw detector
- vacuum-leak detector
- vibration detector
- video detector
- voice activity detector
- voice detector
- voiced-unvoiced detector
- voltage limit detector
- wide-field detector
- zero-crossing detectorThe New English-Russian Dictionary of Radio-electronics > detector
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13 amplifier
1) усилитель
2) амплификатор
3) усилительный
4) участитель
5) < radio> промежуточный
– amplifier klystron
– amplifier noise
– amplifier stage
– amplifier triode
– antenna amplifier
– antisaturation amplifier
– audio-frequency amplifier
– blanking amplifier
– bridge amplifier
– camera amplifier
– cascode amplifier
– channel amplifier
– charge amplifier
– chopper amplifier
– class A amplifier
– class B amplifier
– common-cathode amplifier
– common-collector amplifier
– common-drain amplifier
– common-grid amplifier
– common-plate amplifier
– control amplifier
– correcting amplifier
– crossed-field amplifier
– cryoelectronic amplifier
– cryotron amplifier
– crystal amplifier
– differential amplifier
– differentiating amplifier
– direct-coupled amplifier
– direct-current amplifier
– distribution amplifier
– double-tuned amplifier
– electronic amplifier
– electrostatic amplifier
– error amplifier
– feed-back amplifier
– feedback amplifier
– final amplifier
– fluidic amplifier
– frame amplifier
– frequency-compensated amplifier
– gated amplifier
– harmonic amplifier
– horizontal amplifier
– I-F amplifier
– impedance-coupled amplifier
– input amplifier
– instrument amplifier
– intermediate-frequency amplifier
– inverting amplifier
– klystron amplifier
– lateral amplifier
– level amplifier
– linear amplifier
– low-noise amplifier
– magnetic amplifier
– maser amplifier
– mazer amplifier
– measuring amplifier
– microphone amplifier
– monitoring amplifier
– multistage amplifier
– narrow-band amplifier
– nonselective amplifier
– one-stage amplifier
– operational amplifier
– optoelectronic amplifier
– overdrive amplifier
– parametric amplifier
– paraphase amplifier
– photoelectric amplifier
– playback amplifier
– power amplifier
– public-address amplifier
– pulse amplifier
– push-pull amplifier
– quadrophonic amplifier
– quantum-mechanical amplifier
– radio-frequency amplifier
– range amplifier
– RC coupled amplifier
– RC-coupled amplifier
– reading amplifier
– recording amplifier
– resistance-coupled amplifier
– resistor-coupled amplifier
– servo amplifier
– single-ended amplifier
– single-tuned amplifier
– solid-state amplifier
– split-load amplifier
– spool-valve amplifier
– stager-tuner amplifier
– stagger-tuned amplifier
– stereo amplifier
– superregenerative amplifier
– timebase amplifier
– torque amplifier
– transformer-coupled amplifier
– transistor amplifier
– trap-valve amplifier
– travelling-wave amplifier
– tuned amplifier
– tunnel-diode amplifier
– two-stage amplifier
– uncompensated amplifier
– vacuum-tube amplifier
– vertical amplifier
– video amplifier
– video-mixing amplifier
– voltage amplifier
– wide-band amplifier
– wideband amplifier
autodyne rotary amplifier — <comput.> автодин
class A amplifier oscillations — < radio> колебания первого рода
class C amplifier oscillations — < radio> колебания второго рода
common-grounded plate amplifier — усилитель с катодной нагрузкой
frequency compensated amplifier — усилитель корректированный
integrated circuit amplifier — усилитель на интегральных схемах
optical isolation amplifier — <tech.> оптоизолятор, оптрон
oscillator amplifier unit — < radio> блок генераторно-усилительный
radio-frequency power amplifier — генератор с внешним возбуждением
reversible-polarity magnetic amplifier — <comput.> усилитель магнитный реверсивный
stagger-peaked video amplifier — <phot.> видеоусилитель многорезонансный
stimulated emission amplifier — <opt.> генератор квантовый
wide-band square-law amplifier — широкополосный квадратичный усилитель
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14 amplifier
- accumulating amplifier
- acoustic amplifier
- acoustic-wave amplifier
- acoustoelectric amplifier
- acoustoelectronic amplifier
- AGC amplifier
- all-purpose amplifier
- all-pass amplifier
- anticoincidence amplifier
- aperiodic amplifier
- audio amplifier
- audio-frequency amplifier
- automatic gain control amplifier - backward-wave power amplifier
- backward-wave tube amplifier
- balanced amplifier
- bandpass amplifier
- baseband amplifier
- bass amplifier
- beam-injection magnetron amplifier
- beam-plasma amplifier
- beam-type parametric amplifier
- biased pulse amplifier
- bidirectional amplifier
- bi-FET operational amplifier
- bilateral amplifier
- bipolar amplifier
- bipolar-field-effect transistor operational amplifier
- booster amplifier
- bootstrap amplifier
- bridge amplifier
- bridge magnetic amplifier
- bridging amplifier
- broadband amplifier
- buffer amplifier
- bulk-wave amplifier
- burst amplifier
- camera amplifier
- cancellation amplifier
- capacitance-coupled amplifier
- capacitive-differentiation amplifier
- capacitive-integration amplifier
- capacitor transmitter amplifier
- carries-type dc amplifier
- cascade amplifier
- cascade-controlled attenuation amplifier
- cascode amplifier
- cathode-coupled amplifier
- cathode-follower amplifier
- cathode-input amplifier
- CATV line amplifier
- cavity-type amplifier
- ceramic amplifier
- charge amplifier
- chemical amplifier
- choke-coupled amplifier
- chopper amplifier
- chopper-stabilized amplifier
- chroma amplifier
- chroma bandpass amplifier
- chrominance amplifier
- circlotron amplifier
- circular-type magnetron amplifier
- circulator-coupled amplifier
- clamped amplifier
- class-A amplifier
- class-AB amplifier
- class-B amplifier
- class-C amplifier
- class-D amplifier
- clipper amplifier
- clipping amplifier
- coaxial amplifier
- coherent light amplifier
- coincidence amplifier
- cold-cathode amplifier
- color-burst amplifier
- combining amplifier
- common-base amplifier
- common-collector amplifier
- common-drain amplifier
- common-emitter amplifier
- common-gate amplifier
- common-source amplifier
- community antenna television line amplifier
- compensated amplifier
- complementary symmetry amplifier
- complementary transistor amplifier
- complementing amplifier
- contact-modulated amplifier
- control amplifier
- cooled parametric amplifier
- coupling amplifier
- crossed-field amplifier
- crossed-field waveguide coupled amplifier
- cryogenic amplifier
- cryotron amplifier
- current amplifier
- cyclotron-wave amplifier
- Darlington amplifier
- data amplifier
- dc amplifier
- dc restoration amplifier
- deflection amplifier
- degenerate parametric amplifier
- degenerative amplifier
- dielectric amplifier
- difference amplifier
- difference-frequency parametric amplifier
- differential amplifier
- differential-input amplifier
- differentiating amplifier
- differentiation amplifier
- digitally controlled amplifier
- digitally programmed amplifier
- diode amplifier
- direct-coupled amplifier
- direct-inductive coupling amplifier
- directional amplifier
- direct resistance-coupled amplifier
- discontinuous amplifier
- distributed amplifier
- distributing amplifier
- distribution amplifier
- Doherty amplifier
- double-detection amplifier
- double-ended amplifier - double-sided amplifier
- double-stream amplifier
- double-tuned amplifier
- drift-corrected amplifier
- drift-free amplifier
- drift-stabilized amplifier
- driver amplifier
- dual-channel amplifier
- duo-directional amplifier
- duplex amplifier
- dye-laser amplifier
- dynamoelectric amplifier
- EBS amplifier
- echo amplifier
- echo unit amplifier
- elastic-wave amplifier
- electric organ amplifier
- electrochemical amplifier
- electromagnetic ferrite amplifier
- electrometric amplifier
- electron-beam amplifier - electronic amplifier
- electronically tunable amplifier
- electron-tube amplifier
- EM ferrite amplifier
- emitter-follower amplifier
- erase amplifier
- error amplifier
- exponential amplifier
- extender amplifier
- Fabry-Perot amplifier
- fader amplifier
- fast amplifier
- fast cyclotron-wave amplifier
- feedback amplifier
- feedback-stabilized amplifier
- ferrimagnetic amplifier
- ferrite amplifier
- ferroelectric parametric amplifier
- ferromagnetic amplifier
- ferroresonant magnetic amplifier
- field amplifier
- filter amplifier
- final amplifier
- fixed-gain amplifier
- fixed-tuned amplifier
- flat-gain amplifier
- floating paraphase amplifier
- floating-point amplifier
- fluid amplifier
- folded amplifier
- follow-up amplifier
- forward-wave amplifier
- four-frequency reactance amplifier
- frame amplifier
- frequency-elimination amplifier
- frequency-miltiplier amplifier
- frequency-rejection amplifier
- frequency-selective amplifier
- front amplifier
- front-end amplifier
- gain-adjusting amplifier
- gain-controlled amplifier
- gain-programmable amplifier
- gain-stabilized amplifier
- gain-switching amplifier
- gamma amplifier
- gate amplifier
- gated amplifier
- gate-pulse amplifier
- gating amplifier
- general-purpose amplifier
- Goto twin-pair amplifier
- grid-modulated amplifier
- grounded-anode amplifier
- grounded-base amplifier
- grounded-cathode amplifier
- grounded-cathode grounded-grid amplifier
- grounded-collector amplifier
- grounded-drain amplifier
- grounded-emitter amplifier
- grounded-gate amplifier
- grounded-grid amplifier
- grounded-plate amplifier
- grounded-source amplifier
- guitar amplifier
- Gunn amplifier
- Gunn diode amplifier
- half-wave push-pull magnetic amplifier
- harmonic magnetic amplifier
- head amplifier
- head-end amplifier - heterodyne amplifier
- Hi-Fi amplifier - hybrid amplifier
- hydraulic amplifier
- IC amplifier
- image amplifier
- image-rejecting intermediate frequency amplifier
- IMPATT amplifier
- impedance-capacitance coupled amplifier
- inductance amplifier
- inductively coupled amplifier - instrumentation amplifier
- integrated circuit amplifier
- integrating amplifier
- intensity amplifier
- intermediate amplifier
- intermediate-frequency amplifier
- intermediate power amplifier
- intervening amplifier
- inverted amplifier
- inverting amplifier
- isolated amplifier
- isolating amplifier
- isolation amplifier
- iterative amplifier
- Josephson-junction amplifier
- K-amplifier - launch amplifier
- law amplifier
- level amplifier
- light amplifier
- lighthouse-tube amplifier
- limited-gain amplifier
- limiting amplifier
- line amplifier
- linear amplifier - lin-log amplifier
- lock-in amplifier
- log amplifier - lower sideband parametric amplifier
- low-frequency amplifier
- low-noise amplifier
- low-power amplifier
- luminance amplifier - magnetic-recording amplifier
- magnetic-reproducing amplifier
- magnetoelastic-wave amplifier
- magnetoresistive amplifier
- magnetostatic ferrite amplifier
- magnetostatic-wave amplifier
- magnetron amplifier
- main amplifier
- maser amplifier - matching amplifier
- M-D amplifier - mid-range amplifier
- Miller integrator amplifier
- millimeter-wave amplifier
- mixing amplifier
- modified semistatic ferrite amplifier
- modulated amplifier
- modulating amplifier by variable reactance
- modulation-demodulation amplifier
- molecular microwave amplifier
- monitor amplifier
- mono amplifier
- monolithic amplifier
- MS ferrite amplifier
- MSS ferrite amplifier
- M-type amplifier
- multiaperture-core magnetic amplifier
- multicavity-klystron amplifier
- multiple-loop feedback amplifier
- multistage amplifier
- nanosecond pulse amplifier
- narrow-band amplifier
- negative-conductance amplifier
- negative-effective-mass amplifier
- negative-feedback amplifier
- negative-resistance amplifier
- negative-resistance parametric amplifier
- neodymium amplifier
- neutralized amplifier
- noise-immune amplifier
- noiseless amplifier
- noise-suppression amplifier
- noisy amplifier
- noncomplementing amplifier
- nondegenerate parametric amplifier
- noninverting amplifier
- nonlinear amplifier
- nonlinear-susceptance amplifier
- nonreciprocal amplifier
- nonreentrant crossed-field forward wave amplifier
- off-chip amplifier
- on-chip amplifier
- one-chip amplifier
- one-port amplifier
- one-way amplifier - optical feedback amplifier
- optical fiber laser amplifier
- optoelectronic amplifier
- output amplifier
- overdriven amplifier
- overstaggered amplifier
- PA amplifier
- packaged amplifier
- paging amplifier
- panoramic amplifier
- parallel-feed amplifier
- paramagnetic amplifier - paraphase amplifier
- peaked amplifier
- peak-limiting amplifier
- pentriode amplifier
- periodically distributed amplifier
- phase-coherent degenerate amplifier
- phase-linear amplifier
- phase-preserving amplifier
- phase-sensitive amplifier
- phase-splitting amplifier
- phase-tolerant amplifier
- phonon parametric amplifier
- photocurrent amplifier
- photodiode parametric amplifier
- photoparametric amplifier
- piezoelectric-semiconductor ultrasonic amplifier
- pilot amplifier
- plasma amplifier
- playback amplifier
- plate-modulated amplifier
- plug-in amplifier
- polarity-inverting amplifier
- positive-feedback amplifier
- power amplifier
- power-video amplifier
- prime amplifier
- printed-circuit amplifier
- processing amplifier
- program amplifier
- programmable-gain amplifier
- proportional amplifier
- public-address amplifier
- pulse amplifier
- pulse distribution amplifier
- pulse-pumped parametric amplifier
- push-pull amplifier
- push-pull-parallel amplifier
- push-push amplifier
- quadrature amplifier
- quadrupole amplifier
- quantum amplifier
- quantum-mechanical amplifier
- quasi-degenerate parametric amplifier
- quiescent push-pull amplifier - Rayleigh-wave amplifier
- RC amplifier
- reactance amplifier
- read amplifier
- reading amplifier
- reading-writing amplifier
- receiving amplifier
- reciprocal amplifier
- recording amplifier
- reentrant-beam crossed-field amplifier
- reference amplifier
- reflection-type parametric amplifier
- reflex amplifier
- refrigerated parametric amplifier
- regenerative amplifier
- Regulex amplifier
- repeating amplifier
- reset amplifier
- resistance-capacitance-coupled amplifier
- resistance-coupled amplifier
- resistive-wall amplifier
- resonance amplifier
- resonant amplifier
- response selection amplifier
- reversed-feedback amplifier
- ring amplifier
- root amplifier
- rooter amplifier
- rotary amplifier
- rotary fader amplifier
- rotating amplifier
- rotating magnetic amplifier
- sample-and-hold amplifier
- sampling amplifier
- SAW amplifier
- selective amplifier
- self-feedback amplifier
- self-pumped parametric amplifier
- self-saturating magnetic amplifier
- semiconductor-diode parametric amplifier
- semistatic ferrite amplifier
- sense amplifier
- sensing amplifier
- sensitive amplifier
- series-fed amplifier
- series-peaked amplifier
- servo amplifier
- shunt-and series-peaked amplifier
- shunt-fed amplifier
- shunting amplifier
- shunt-peaked amplifier
- signal-frequency amplifier
- signal-shaping amplifier
- single-ended amplifier
- single-ended push-pull amplifier
- single-port amplifier - single-sideband parametric amplifier
- single-sided amplifier
- single-stage amplifier
- single-tuned amplifier
- small-signal amplifier
- solid-state amplifier - spin-wave amplifier
- square-law amplifier
- square amplifier
- square-wave amplifier
- squaring amplifier
- squarish amplifier
- SS ferrite amplifier
- stabilizing amplifier
- staggered amplifier
- stagger-damped double-tuned amplifier
- staggered-pair amplifier
- staggered-triple amplifier
- stagger-tuned amplifier
- standing-wave amplifier
- starved amplifier
- step-up amplifier
- stereo amplifier
- straight amplifier
- sum-frequency parametric amplifier
- summing amplifier
- superconducting amplifier
- superregenerative amplifier
- superregenerative paramagnetic amplifier
- superregenerative parametric amplifier
- surface-acoustic-wave amplifier
- surface-wave amplifier
- sweep amplifier
- switching amplifier
- synchronizing amplifier
- synchronous single-tuned amplifier
- tandem amplifier
- telephone-repeater amplifier
- thermal amplifier
- thick-film amplifier
- three-frequency parametric amplifier
- threshold amplifier
- time-base amplifier
- time-control amplifier
- time-shared amplifier
- torque amplifier
- totem-pole amplifier
- transconductance amplifier
- transducer amplifier
- transferred-electron amplifier
- transformer-coupled amplifier
- transimpedance amplifier
- transistor amplifier
- transistor-magnetic amplifier
- transitionally coupled amplifier
- transmission-line amplifier
- transmission-type amplifier
- transresistance amplifier
- transverse-wave electron-beam parametric amplifier - triode amplifier
- triple-tuned amplifier
- trunk amplifier
- tube amplifier
- tuned amplifier - twin-tee amplifier
- two-directional amplifier
- two-port amplifier
- two-pump parametric amplifier
- two-way amplifier
- TWT amplifier
- ultrasonic amplifier
- unidirectional amplifier
- unilateral amplifier
- unilateralized amplifier
- unity-gain amplifier
- untuned amplifier
- upper sideband parametric amplifier
- vacuum-tube amplifier
- valve amplifier
- varactor parametric amplifier
- variable-gain amplifier
- variable-parametric amplifier
- variable-reactance amplifier
- velocity-modulated amplifier
- velocity-variation amplifier
- vertical amplifier
- vibrating capacitor amplifier
- video amplifier
- video-distribution amplifier
- video-frequency amplifier
- video-head amplifier
- vision-distribution amplifier
- vocal amplifier
- voltage amplifier - volume-wave amplifier
- Wallman amplifier
- Weber tetrode amplifier
- wide-band amplifier
- wide-dynamic range amplifier
- Williamson amplifier
- writing amplifier
- YIG parametric amplifier
- zero-phase-shift amplifier -
15 amplifier
- accumulating amplifier
- acoustic amplifier
- acoustic-wave amplifier
- acoustoelectric amplifier
- acoustoelectronic amplifier
- AGC amplifier
- all-pass amplifier
- all-purpose amplifier
- anticoincidence amplifier
- aperiodic amplifier
- audio amplifier
- audio-frequency amplifier
- automatic gain control amplifier
- backward-wave amplifier
- backward-wave parametric amplifier
- backward-wave power amplifier
- backward-wave tube amplifier
- balanced amplifier
- bandpass amplifier
- baseband amplifier
- bass amplifier
- beam-injection magnetron amplifier
- beam-plasma amplifier
- beam-type parametric amplifier
- biased pulse amplifier
- bidirectional amplifier
- bi-FET operational amplifier
- bilateral amplifier
- bipolar amplifier
- bipolar-field-effect transistor operational amplifier
- booster amplifier
- bootstrap amplifier
- bridge amplifier
- bridge magnetic amplifier
- bridging amplifier
- broadband amplifier
- buffer amplifier
- bulk-wave amplifier
- burst amplifier
- camera amplifier
- cancellation amplifier
- capacitance-coupled amplifier
- capacitive-differentiation amplifier
- capacitive-integration amplifier
- capacitor transmitter amplifier
- carries-type dc amplifier
- cascade amplifier
- cascade-controlled attenuation amplifier
- cascode amplifier
- cathode-coupled amplifier
- cathode-follower amplifier
- cathode-input amplifier
- CATV line amplifier
- cavity-type amplifier
- ceramic amplifier
- charge amplifier
- chemical amplifier
- choke-coupled amplifier
- chopper amplifier
- chopper-stabilized amplifier
- chroma amplifier
- chroma bandpass amplifier
- chrominance amplifier
- circlotron amplifier
- circular-type magnetron amplifier
- circulator-coupled amplifier
- clamped amplifier
- class-A amplifier
- class-AB amplifier
- class-B amplifier
- class-C amplifier
- class-D amplifier
- clipper amplifier
- clipping amplifier
- coaxial amplifier
- coherent light amplifier
- coincidence amplifier
- cold-cathode amplifier
- color-burst amplifier
- combining amplifier
- common-base amplifier
- common-collector amplifier
- common-drain amplifier
- common-emitter amplifier
- common-gate amplifier
- common-source amplifier
- community antenna television line amplifier
- compensated amplifier
- complementary symmetry amplifier
- complementary transis-tor amplifier
- complementing amplifier
- contact-modulated amplifier
- control amplifier
- cooled parametric amplifier
- coupling amplifier
- crossed-field amplifier
- crossed-field waveguide coupled amplifier
- cryogenic amplifier
- cryotron amplifier
- current amplifier
- cyclotron-wave amplifier
- Darlington amplifier
- data amplifier
- dc amplifier
- dc restoration amplifier
- deflection amplifier
- degenerate parametric amplifier
- degenerative amplifier
- dielectric amplifier
- difference amplifier
- difference-frequency parametric amplifier
- differential amplifier
- differential-input amplifier
- differentiating amplifier
- differentiation amplifier
- digitally controlled amplifier
- digitally programmed amplifier
- diode amplifier
- direct resistance-coupled amplifier
- direct-coupled amplifier
- direct-inductive coupling amplifier
- directional amplifier
- discontinuous amplifier
- distributed amplifier
- distributing amplifier
- distribution amplifier
- Doherty amplifier
- double-detection amplifier
- double-ended amplifier
- double-pumped parametric amplifier
- double-sideband parametric amplifier
- double-sided amplifier
- double-stream amplifier
- double-tuned amplifier
- drift-corrected amplifier
- drift-free amplifier
- drift-stabilized amplifier
- driver amplifier
- dual-channel amplifier
- duo-directional amplifier
- duplex amplifier
- dye-laser amplifier
- dynamoelectric amplifier
- EBS amplifier
- echo amplifier
- echo unit amplifier
- elastic-wave amplifier
- electric organ amplifier
- electrochemical amplifier
- electromagnetic ferrite amplifier
- electrometric amplifier
- electron-beam amplifier
- electron-beam parametric amplifier
- electron-bombardment semiconductor amplifier
- electronic amplifier
- electronically tunable amplifier
- electron-tube amplifier
- EM ferrite amplifier
- emitter-follower amplifier
- erase amplifier
- error amplifier
- exponential amplifier
- extender amplifier
- Fabry-Perot amplifier
- fader amplifier
- fast amplifier
- fast cyclotron-wave amplifier
- feedback amplifier
- feedback-stabilized amplifier
- ferrimagnetic amplifier
- ferrite amplifier
- ferroelectric parametric amplifier
- ferromagnetic amplifier
- ferroresonant magnetic amplifier
- field amplifier
- filter amplifier
- final amplifier
- fixed-gain amplifier
- fixed-tuned amplifier
- flat-gain amplifier
- floating paraphase amplifier
- floating-point amplifier
- fluid amplifier
- folded amplifier
- follow-up amplifier
- forward-wave amplifier
- four-frequency reactance amplifier
- frame amplifier
- frequency-elimination amplifier
- frequency-miltiplier amplifier
- frequency-rejection amplifier
- frequency-selective amplifier
- front amplifier
- front-end amplifier
- gain-adjusting amplifier
- gain-controlled amplifier
- gain-programmable amplifier
- gain-stabilized amplifier
- gain-switching amplifier
- gamma amplifier
- gate amplifier
- gated amplifier
- gate-pulse amplifier
- gating amplifier
- general-purpose amplifier
- Goto twin-pair amplifier
- grid-modulated amplifier
- grounded-anode amplifier
- grounded-base amplifier
- grounded-cathode amplifier
- grounded-cathode grounded-grid amplifier
- grounded-collector amplifier
- grounded-drain amplifier
- grounded-emitter amplifier
- grounded-gate amplifier
- grounded-grid amplifier
- grounded-plate amplifier
- grounded-source amplifier
- guitar amplifier
- Gunn amplifier
- Gunn diode amplifier
- half-wave push-pull magnetic amplifier
- harmonic magnetic amplifier
- head amplifier
- head-end amplifier
- headphone amplifier
- helix parametric amplifier
- heterodyne amplifier
- Hi-Fi amplifier
- high power amplifier
- high-frequency amplifier
- horizontal amplifier
- hybrid amplifier
- hydraulic amplifier
- IC amplifier
- image amplifier
- image-rejecting intermediate frequency amplifier
- IMPATT amplifier
- impedance-capacitance coupled amplifier
- inductance amplifier
- inductively coupled amplifier
- injected-beam crossed-field amplifier
- injected-beam forward-wave magnetron amplifier
- instrumentation amplifier
- integrated-circuit amplifier
- integrating amplifier
- intensity amplifier
- intermediate amplifier
- intermediate power amplifier
- intermediate-frequency amplifier
- intervening amplifier
- inverted amplifier
- inverting amplifier
- isolated amplifier
- isolating amplifier
- isolation amplifier
- iterative amplifier
- Josephson-junction amplifier
- K amplifier
- klystron amplifier
- laser amplifier
- launch amplifier
- law amplifier
- level amplifier
- light amplifier
- lighthouse-tube amplifier
- limited-gain amplifier
- limiting amplifier
- line amplifier
- linear amplifier for various applications
- linear amplifier
- linear-type magnetron amplifier
- lin-log amplifier
- lock-in amplifier
- log amplifier
- logarithmic amplifier
- longitudinal-beam amplifier
- lower sideband parametric amplifier
- low-frequency amplifier
- low-noise amplifier
- low-power amplifier
- luminance amplifier
- magnetic amplifier
- magnetic-film amplifier
- magnetic-recording amplifier
- magnetic-reproducing amplifier
- magnetoelastic-wave amplifier
- magnetoresistive amplifier
- magnetostatic ferrite amplifier
- magnetostatic-wave amplifier
- magnetron amplifier
- main amplifier
- maser amplifier
- master oscillator-power amplifier
- matched amplifier
- matching amplifier
- M-D amplifier
- microphone amplifier
- microwave atomic amplifier
- mid-range amplifier
- Miller integrator amplifier
- millimeter-wave amplifier
- mixing amplifier
- modified semistatic ferrite amplifier
- modulated amplifier
- modulating amplifier by variable reactance
- modulation-demodulation amplifier
- molecular microwave amplifier
- monitor amplifier
- mono amplifier
- monolithic amplifier
- MS ferrite amplifier
- MSS ferrite amplifier
- M-type amplifier
- multiaperture-core magnetic amplifier
- multicavity-klystron amplifier
- multiple-loop feedback amplifier
- multistage amplifier
- nanosecond pulse amplifier
- narrow-band amplifier
- negative-conductance amplifier
- negative-effective-mass amplifier
- negative-feedback amplifier
- negative-resistance amplifier
- negative-resistance parametric amplifier
- neodymium amplifier
- neutralized amplifier
- noise-immune amplifier
- noiseless amplifier
- noise-suppression amplifier
- noisy amplifier
- noncomplementing amplifier
- nondegenerate parametric amplifier
- noninverting amplifier
- nonlinear amplifier
- nonlinear-susceptance amplifier
- nonreciprocal amplifier
- nonreentrant crossed-field forward wave amplifier
- off-chip amplifier
- on-chip amplifier
- one-chip amplifier
- one-port amplifier
- one-way amplifier
- operational amplifier
- optical amplifier
- optical feedback amplifier
- optical fiber laser amplifier
- optoelectronic amplifier
- output amplifier
- overdriven amplifier
- overstaggered amplifier
- PA amplifier
- packaged amplifier
- paging amplifier
- panoramic amplifier
- parallel-feed amplifier
- paramagnetic amplifier
- parametric amplifier
- parametric varactor amplifier
- paraphase amplifier
- peaked amplifier
- peak-limiting amplifier
- pentriode amplifier
- periodically distributed amplifier
- phase-coherent degenerate amplifier
- phase-linear amplifier
- phase-preserving amplifier
- phase-sensitive amplifier
- phase-splitting amplifier
- phase-tolerant amplifier
- phonon parametric amplifier
- photocurrent amplifier
- photodiode parametric amplifier
- photoparametric amplifier
- piezoelectric-semiconductor ultrasonic amplifier
- pilot amplifier
- plasma amplifier
- plate-modulated amplifier
- playback amplifier
- plug-in amplifier
- polarity-inverting amplifier
- positive-feedback amplifier
- power amplifier
- power-video amplifier
- prime amplifier
- printed-circuit amplifier
- processing amplifier
- program amplifier
- programmable-gain amplifier
- proportional amplifier
- public-address amplifier
- pulse amplifier
- pulse distribution amplifier
- pulse-pumped parametric amplifier
- push-pull amplifier
- push-pull-parallel amplifier
- push-push amplifier
- quadrature amplifier
- quadrupole amplifier
- quantum amplifier
- quantum-mechanical amplifier
- quasi-degenerate parametric amplifier
- quiescent push-pull amplifier
- radio-frequency amplifier
- Ramey amplifier
- Rayleigh-wave amplifier
- RC amplifier
- reactance amplifier
- read amplifier
- reading amplifier
- reading-writing amplifier
- receiving amplifier
- reciprocal amplifier
- recording amplifier
- reentrant-beam crossed-field amplifier
- reference amplifier
- reflection-type parametric amplifier
- reflex amplifier
- refrigerated parametric amplifier
- regenerative amplifier
- Regulex amplifier
- repeating amplifier
- reset amplifier
- resistance-capacitance-coupled amplifier
- resistance-coupled amplifier
- resistive-wall amplifier
- resonance amplifier
- resonant amplifier
- response selection amplifier
- reversed-feedback amplifier
- ring amplifier
- root amplifier
- rooter amplifier
- rotary amplifier
- rotary fader amplifier
- rotating amplifier
- rotating magnetic amplifier
- sample-and-hold amplifier
- sampling amplifier
- SAW amplifier
- selective amplifier
- self-feedback amplifier
- self-pumped parametric amplifier
- self-saturating magnetic amplifier
- semiconductor-diode parametric amplifier
- semistatic ferrite amplifier
- sense amplifier
- sensing amplifier
- sensitive amplifier
- series-fed amplifier
- series-peaked amplifier
- servo amplifier
- shunt-and series-peaked amplifier
- shunt-fed amplifier
- shunting amplifier
- shunt-peaked amplifier
- signal-frequency amplifier
- signal-shaping amplifier
- single-ended amplifier
- single-ended push-pull amplifier
- single-port amplifier
- single-pumped parametric amplifier
- single-section amplifier
- single-sideband parametric amplifier
- single-sided amplifier
- single-stage amplifier
- single-tuned amplifier
- small-signal amplifier
- solid-state amplifier
- solid-state power amplifier
- source-follower amplifier
- speaker amplifier
- speech amplifier
- spin-wave amplifier
- square amplifier
- square-law amplifier
- square-wave amplifier
- squaring amplifier
- squarish amplifier
- SS ferrite amplifier
- stabilizing amplifier
- stagger-damped double-tuned amplifier
- staggered amplifier
- staggered-pair amplifier
- staggered-triple amplifier
- stagger-tuned amplifier
- standing-wave amplifier
- starved amplifier
- step-up amplifier
- stereo amplifier
- straight amplifier
- sum-frequency parametric amplifier
- summing amplifier
- superconducting amplifier
- superregenerative amplifier
- superregenerative paramagnetic amplifier
- superregenerative parametric amplifier
- surface-acoustic-wave amplifier
- surface-wave amplifier
- sweep amplifier
- switching amplifier
- synchronizing amplifier
- synchronous single-tuned amplifier
- tandem amplifier
- telephone-repeater amplifier
- thermal amplifier
- thick-film amplifier
- three-frequency parametric amplifier
- threshold amplifier
- time-base amplifier
- time-control amplifier
- time-shared amplifier
- torque amplifier
- totem-pole amplifier
- transconductance amplifier
- transducer amplifier
- transferred-electron amplifier
- transformer-coupled amplifier
- transimpedance amplifier
- transistor amplifier
- transistor-magnetic amplifier
- transitionally coupled amplifier
- transmission-line amplifier
- transmission-type amplifier
- transresistance amplifier
- transverse-wave electron-beam parametric amplifier
- traveling-wave acoustic amplifier
- traveling-wave amplifier
- traveling-wave parametric amplifier
- traveling-wave tube amplifier
- treble amplifier
- triode amplifier
- triple-tuned amplifier
- trunk amplifier
- tube amplifier
- tuned amplifier
- tunnel-diode amplifier
- twin-pair amplifier
- twin-tee amplifier
- two-directional amplifier
- two-port amplifier
- two-pump parametric amplifier
- two-way amplifier
- TWT amplifier
- ultrasonic amplifier
- unidirectional amplifier
- unilateral amplifier
- unilateralized amplifier
- unity-gain amplifier
- untuned amplifier
- upper sideband parametric amplifier
- vacuum-tube amplifier
- valve amplifier
- varactor parametric amplifier
- variable-gain amplifier
- variable-parametric amplifier
- variable-reactance amplifier
- velocity-modulated amplifier
- velocity-variation amplifier
- vertical amplifier
- vibrating capacitor amplifier
- video amplifier
- video-distribution amplifier
- video-frequency amplifier
- video-head amplifier
- vision-distribution amplifier
- vocal amplifier
- voltage amplifier
- voltage-controlled amplifier
- volume-limiting amplifier
- volume-wave amplifier
- Wallman amplifier
- Weber tetrode amplifier
- wide-band amplifier
- wide-dynamic range amplifier
- Williamson amplifier
- writing amplifier
- YIG parametric amplifier
- zero-phase-shift amplifierThe New English-Russian Dictionary of Radio-electronics > amplifier
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16 vacuum
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17 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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