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Alternating current

Index Alternating current

Alternating current (AC) is an electric current which periodically reverses direction, in contrast to direct current (DC) which flows only in one direction. [1]

144 relations: AC motor, AC power, AC power plugs and sockets, AC/DC receiver design, Acceleration, Adams Power Plant Transformer House, Almarian Decker, Alternator, Ames Hydroelectric Generating Plant, Angular frequency, Arc lamp, Arnold Heertje, Audio frequency, Austria, Šibenik, Baseband, Cable television, Charles Eugene Lancelot Brown, Charles Legeyt Fortescue, Charles Proteus Steinmetz, Coaxial cable, Commutator (electric), Crest factor, Current density, DC bias, Deptford Power Station, Dielectric, Direct current, Dissipation, Duchenne de Boulogne, Dynamo, Electric battery, Electric charge, Electric current, Electric generator, Electric power, Electric power transmission, Electrical conductor, Electrical energy, Electrical impedance, Electrical injury, Electrical load, Electrical resistance and conductance, Electrical resistivity and conductivity, Electrical substation, Electrical wiring, Electricity meter, Electromagnetic field, Electromagnetic radiation, Electrotherapy, ..., Fault (power engineering), Flashlight, Function (mathematics), Galileo Ferraris, Ganz Works, George Westinghouse, Germany, Ground and neutral, Harmonics (electrical power), Hertz, High-voltage direct current, Hippolyte Pixii, Home appliance, Incandescent light bulb, Induction coil, Induction motor, Inductive coupling, Inductor, Industrial and multiphase power plugs and sockets, Information, Jaruga Hydroelectric Power Plant, John Dixon Gibbs, Joule heating, Károly Zipernowsky, List of trigonometric identities, Litz wire, Los Alamos National Laboratory, Lucien Gaulard, Mainframe computer, Mains electricity by country, Mean of a function, Michael Faraday, Microwave, Mikhail Dolivo-Dobrovolsky, Miksa Déri, Mill Creek (San Bernardino County), Modulation, Museum of Science and Industry (Manchester), Nature (journal), Niagara Falls, Nikola Tesla, Norway, Oliver Heaviside, Optical fiber, Ottó Bláthy, Overhead power line, Pavel Yablochkov, PBS, Phase (waves), Plain old telephone service, Pomona, California, Power station, Power supply, Q factor, Radian per second, Radio frequency, Rail transport, Redlands, California, Ripple (electrical), Rome, Root mean square, Sebastian Ziani de Ferranti, Second, Sine wave, Single-phase electric power, Skin effect, Split-phase electric power, Square wave, Stator, Sweden, Switzerland, Symmetrical components, Telephone, Three-phase, Three-phase electric power, Traction motor, Transformer, Triangle wave, Turin, Twisted pair, University of Florida, University of Pavia, Utility frequency, Vacuum cleaner, Volt, Voltage, War of the currents, Waveform, Waveguide (electromagnetism), Wavelength, Westinghouse Electric Corporation, William Stanley Jr., Wireless, Yablochkov candle. Expand index (94 more) »

AC motor

An AC motor is an electric motor driven by an alternating current (AC).

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AC power

Power in an electric circuit is the rate of flow of energy past a given point of the circuit.

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AC power plugs and sockets

AC power plugs and sockets are devices that allow electrically operated equipment to be connected to the primary alternating current (AC) power supply in a building.

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AC/DC receiver design

An AC/DC receiver design is a style of power supply of vacuum tube radio or television receivers that eliminated the bulky and expensive mains transformer.

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In physics, acceleration is the rate of change of velocity of an object with respect to time.

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Adams Power Plant Transformer House

Adams Power Plant Transformer House in Niagara Falls, New York is a National Historic Landmarked building constructed in 1895.

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Almarian Decker

Almarian William Decker (born 1852, Ohio; d. Aug. 1893, Sierra Madre, California; interred Sierra Madre Pioneer Cemetery) was an American pioneer of electrical engineering involved in the early development of three-phase electrical power.

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An alternator is an electrical generator that converts mechanical energy to electrical energy in the form of alternating current.

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Ames Hydroelectric Generating Plant

The Ames Hydroelectric Generating Plant, constructed in 1890 near Ophir, Colorado, was the world's first commercial system to produce and transmit alternating current (AC) electricity for industrial use and one of the first AC hydro-electric plants ever constructed.

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Angular frequency

In physics, angular frequency ω (also referred to by the terms angular speed, radial frequency, circular frequency, orbital frequency, radian frequency, and pulsatance) is a scalar measure of rotation rate.

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Arc lamp

An arc lamp or arc light is a lamp that produces light by an electric arc (also called a voltaic arc).

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Arnold Heertje

Arnold Heertje (born 19 February 1934) is a Dutch economist, Emeritus Professor at the University of Amsterdam, writer and columnist.

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Audio frequency

An audio frequency (abbreviation: AF) or audible frequency is characterized as a periodic vibration whose frequency is audible to the average human.

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Austria (Österreich), officially the Republic of Austria (Republik Österreich), is a federal republic and a landlocked country of over 8.8 million people in Central Europe.

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Šibenik (Sebenico) is a historic city in Croatia, located in central Dalmatia where the river Krka flows into the Adriatic Sea.

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Baseband is a signal that has a very narrow and near-zero frequency range, i.e. a spectral magnitude that is nonzero only for frequencies in the vicinity of the origin (termed f.

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Cable television

Cable television is a system of delivering television programming to paying subscribers via radio frequency (RF) signals transmitted through coaxial cables, or in more recent systems, light pulses through fiber-optic cables.

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Charles Eugene Lancelot Brown

200px Charles Eugene Lancelot Brown (17 June 1863 – 2 May 1924) founded Brown, Boveri & Cie (BBC) — later ASEA Brown Boveri (ABB) — with Walter Boveri.

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Charles Legeyt Fortescue

Charles LeGeyt Fortescue (1876–1936) was an electrical engineer.

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Charles Proteus Steinmetz

Charles Proteus Steinmetz (born Karl August Rudolph Steinmetz, April 9, 1865 – October 26, 1923) was a German-born American mathematician and electrical engineer and professor at Union College.

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Coaxial cable

Cross-sectional view of a coaxial cable Coaxial cable, or coax (pronounced), is a type of electrical cable that has an inner conductor surrounded by a tubular insulating layer, surrounded by a tubular conducting shield.

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Commutator (electric)

A commutator is a rotary electrical switch in certain types of electric motors and electrical generators that periodically reverses the current direction between the rotor and the external circuit.

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Crest factor

Crest factor is a parameter of a waveform, such as alternating current or sound, showing the ratio of peak values to the effective value.

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Current density

In electromagnetism, current density is the electric current per unit area of cross section.

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DC bias

When describing a periodic function in the time domain, the DC bias, DC component, DC offset, or DC coefficient is the mean amplitude of the waveform.

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Deptford Power Station

Three distinct coal-fired power stations were built at Deptford on the south bank of the River Thames, the first of which is regarded as the first central high-voltage power station in the world.

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A dielectric (or dielectric material) is an electrical insulator that can be polarized by an applied electric field.

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Direct current

Direct current (DC) is the unidirectional flow of electric charge.

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Dissipation is the result of an irreversible process that takes place in homogeneous thermodynamic systems.

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Duchenne de Boulogne

Guillaume-Benjamin-Amand Duchenne (de Boulogne) (September 17, 1806 in Boulogne-sur-Mer – September 15, 1875 in Paris) was a French neurologist who revived Galvani's research and greatly advanced the science of electrophysiology.

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A dynamo is an electrical generator that creates direct current using a commutator.

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Electric battery

An electric battery is a device consisting of one or more electrochemical cells with external connections provided to power electrical devices such as flashlights, smartphones, and electric cars.

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Electric charge

Electric charge is the physical property of matter that causes it to experience a force when placed in an electromagnetic field.

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Electric current

An electric current is a flow of electric charge.

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Electric generator

In electricity generation, a generator is a device that converts motive power (mechanical energy) into electrical power for use in an external circuit.

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Electric power

Electric power is the rate, per unit time, at which electrical energy is transferred by an electric circuit.

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Electric power transmission

Electric power transmission is the bulk movement of electrical energy from a generating site, such as a power plant, to an electrical substation.

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Electrical conductor

In physics and electrical engineering, a conductor is an object or type of material that allows the flow of an electrical current in one or more directions.

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Electrical energy

Electrical energy is the energy newly derived from electric potential energy or kinetic energy.

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Electrical impedance

Electrical impedance is the measure of the opposition that a circuit presents to a current when a voltage is applied.

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Electrical injury

Electrical injury is a physiological reaction caused by electric current passing through the (human) body.

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Electrical load

An electrical load is an electrical component or portion of a circuit that consumes (active) electric power.

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Electrical resistance and conductance

The electrical resistance of an electrical conductor is a measure of the difficulty to pass an electric current through that conductor.

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Electrical resistivity and conductivity

Electrical resistivity (also known as resistivity, specific electrical resistance, or volume resistivity) is a fundamental property that quantifies how strongly a given material opposes the flow of electric current.

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Electrical substation

A substation is a part of an electrical generation, transmission, and distribution system.

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Electrical wiring

Electrical wiring is an electrical installation of cabling and associated devices such as switches, distribution boards, sockets and light fittings in a structure.

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Electricity meter

analog electricity meter. Electricity meter with transparent plastic case (Israel) North American domestic electronic electricity meter An electricity meter, electric meter, electrical meter, or energy meter is a device that measures the amount of electric energy consumed by a residence, a business, or an electrically powered device.

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Electromagnetic field

An electromagnetic field (also EMF or EM field) is a physical field produced by electrically charged objects.

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Electromagnetic radiation

In physics, electromagnetic radiation (EM radiation or EMR) refers to the waves (or their quanta, photons) of the electromagnetic field, propagating (radiating) through space-time, carrying electromagnetic radiant energy.

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Electrotherapy is the use of electrical energy as a medical treatment.

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Fault (power engineering)

In an electric power system, a fault or fault current is any abnormal electric current.

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A flashlight (more often called a torch outside North America) is a portable hand-held electric light.

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Function (mathematics)

In mathematics, a function was originally the idealization of how a varying quantity depends on another quantity.

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Galileo Ferraris

Galileo Ferraris (31 October 1847 – 7 February 1897) was an Italian physicist and electrical engineer, one of the pioneers of AC power system and an inventor of the three-phase induction motor.

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Ganz Works

The Ganz Works or Ganz (or Ganz Művek, Ganz enterprises or Ganz companies) was a group of companies operating between 1845 and 1949 in Budapest, Hungary.

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George Westinghouse

George Westinghouse Jr. (October 6, 1846 – March 12, 1914) was an American entrepreneur and engineer based in Pittsburgh, Pennsylvania who invented the railway air brake and was a pioneer of the electrical industry, gaining his first patent at the age of 19.

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Germany (Deutschland), officially the Federal Republic of Germany (Bundesrepublik Deutschland), is a sovereign state in central-western Europe.

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Ground and neutral

As the neutral point of an electrical supply system is often connected to earth ground, ground and neutral are closely related.

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Harmonics (electrical power)

Harmonic is multiple of the fundamental frequency and it can be voltage and current in an electric power system are a result of non-linear electric loads.

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The hertz (symbol: Hz) is the derived unit of frequency in the International System of Units (SI) and is defined as one cycle per second.

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High-voltage direct current

A high-voltage, direct current (HVDC) electric power transmission system (also called a power superhighway or an electrical superhighway) uses direct current for the bulk transmission of electrical power, in contrast with the more common alternating current (AC) systems.

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Hippolyte Pixii

Hippolyte Pixii (1808–1835) was an instrument maker from Paris, France.

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Home appliance

Home appliances are electrical/mechanical machines which accomplish some household functions, such as cooking, cleaning, or food preservation.

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Incandescent light bulb

An incandescent light bulb, incandescent lamp or incandescent light globe is an electric light with a wire filament heated to such a high temperature that it glows with visible light (incandescence).

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Induction coil

An induction coil or "spark coil" (archaically known as an inductorium or Ruhmkorff coil after Heinrich Ruhmkorff) is a type of electrical transformer used to produce high-voltage pulses from a low-voltage direct current (DC) supply.

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Induction motor

An induction motor or asynchronous motor is an AC electric motor in which the electric current in the rotor needed to produce torque is obtained by electromagnetic induction from the magnetic field of the stator winding.

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Inductive coupling

In electrical engineering, two conductors are referred to as inductively coupled or magnetically coupled when they are configured such that a change in current through one wire induces a voltage across the ends of the other wire through electromagnetic induction.

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An inductor, also called a coil, choke or reactor, is a passive two-terminal electrical component that stores energy in a magnetic field when electric current flows through it.

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Industrial and multiphase power plugs and sockets

Industrial and multiphase plugs and sockets provide a connection to the electrical mains rated at higher voltages and currents than household plugs and sockets.

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Information is any entity or form that provides the answer to a question of some kind or resolves uncertainty.

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Jaruga Hydroelectric Power Plant

Jaruga Hydroelectric Power Plant is a hydroelectric power plant on river Krka, located in Šibenik-Knin county, in central Dalmatia, Croatia.

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John Dixon Gibbs

John Dixon Gibbs (1834–1912) was a British engineer and financier who, together with Lucien Gaulard is often credited as the co-inventor of the AC step-down transformer.

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Joule heating

Joule heating, also known as Ohmic heating and resistive heating, is the process by which the passage of an electric current through a conductor produces heat.

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Károly Zipernowsky

Károly Zipernowsky (born as Carl Zipernowsky, 4 April 1853 in Vienna – 29 November 1942 in Budapest) was an Austrian-born Hungarian electrical engineer.

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List of trigonometric identities

In mathematics, trigonometric identities are equalities that involve trigonometric functions and are true for every value of the occurring variables where both sides of the equality are defined.

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Litz wire

Litz wire is a type of specialized multistrand wire or cable used in electronics to carry alternating current (AC) at radio frequencies.

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Los Alamos National Laboratory

Los Alamos National Laboratory (Los Alamos or LANL for short) is a United States Department of Energy national laboratory initially organized during World War II for the design of nuclear weapons as part of the Manhattan Project.

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Lucien Gaulard

Lucien Gaulard (1850 – November 26, 1888) invented devices for the transmission of alternating current electrical energy.

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Mainframe computer

Mainframe computers (colloquially referred to as "big iron") are computers used primarily by large organizations for critical applications; bulk data processing, such as census, industry and consumer statistics, enterprise resource planning; and transaction processing.

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Mains electricity by country

Mains electricity by country includes a list of countries and territories, with the plugs, voltages and frequencies they commonly use for providing electrical power to appliances, equipment, and lighting typically found in homes and offices.

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Mean of a function

In calculus, and especially multivariable calculus, the mean of a function is loosely defined as the average value of the function over its domain.

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Michael Faraday

Michael Faraday FRS (22 September 1791 – 25 August 1867) was an English scientist who contributed to the study of electromagnetism and electrochemistry.

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Microwaves are a form of electromagnetic radiation with wavelengths ranging from one meter to one millimeter; with frequencies between and.

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Mikhail Dolivo-Dobrovolsky

Mikhail Osipovich Dolivo-Dobrovolsky (Михаи́л О́сипович Доли́во-Доброво́льский; Michail von Dolivo-Dobrowolsky or Michail Ossipowitsch Doliwo-Dobrowolski; Michał Doliwo-Dobrowolski; &ndash) was a Polish-Russian engineer, electrician, and inventor.

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Miksa Déri

Miksa Déri (27 October 1854 November, Bács, Kingdom of Hungary, (now: Bač, Serbia) – 3 March 1938) was a Hungarian electrical engineer, inventor, power plant builder.

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Mill Creek (San Bernardino County)

Mill Creek is a U.S. Geological Survey.

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In electronics and telecommunications, modulation is the process of varying one or more properties of a periodic waveform, called the carrier signal, with a modulating signal that typically contains information to be transmitted.

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Museum of Science and Industry (Manchester)

The Museum of Science and Industry (MSI or formerly known as MOSI) in Manchester, England, is a large museum devoted to the development of science, technology and industry with emphasis on the city's achievements in these fields.

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Nature (journal)

Nature is a British multidisciplinary scientific journal, first published on 4 November 1869.

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Niagara Falls

Niagara Falls is the collective name for three waterfalls that straddle the international border between the Canadian province of Ontario and the American state of New York.

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Nikola Tesla

Nikola Tesla (Никола Тесла; 10 July 1856 – 7 January 1943) was a Serbian-American inventor, electrical engineer, mechanical engineer, physicist, and futurist who is best known for his contributions to the design of the modern alternating current (AC) electricity supply system.

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Norway (Norwegian: (Bokmål) or (Nynorsk); Norga), officially the Kingdom of Norway, is a unitary sovereign state whose territory comprises the western portion of the Scandinavian Peninsula plus the remote island of Jan Mayen and the archipelago of Svalbard.

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Oliver Heaviside

Oliver Heaviside FRS (18 May 1850 – 3 February 1925) was an English self-taught electrical engineer, mathematician, and physicist who adapted complex numbers to the study of electrical circuits, invented mathematical techniques for the solution of differential equations (equivalent to Laplace transforms), reformulated Maxwell's field equations in terms of electric and magnetic forces and energy flux, and independently co-formulated vector analysis.

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Optical fiber

An optical fiber or optical fibre is a flexible, transparent fiber made by drawing glass (silica) or plastic to a diameter slightly thicker than that of a human hair.

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Ottó Bláthy

Ottó Titusz Bláthy (11 August 1860 – 26 September 1939) was a Hungarian electrical engineer.

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Overhead power line

An overhead power line is a structure used in electric power transmission and distribution to transmit electrical energy along large distances.

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Pavel Yablochkov

Pavel Nikolayevich Yablochkov (also transliterated as Jablochkoff) (Павел Николаевич Яблочков in Russian) (&ndash) was a Russian electrical engineer, businessman and the inventor of the Yablochkov candle (a type of electric carbon arc lamp) and the transformer.

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The Public Broadcasting Service (PBS) is an American public broadcaster and television program distributor.

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Phase (waves)

Phase is the position of a point in time (an instant) on a waveform cycle.

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Plain old telephone service

Plain old telephone service or plain ordinary telephone service (POTS) is a retronym for voice-grade telephone service employing analog signal transmission over copper loops.

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Pomona, California

Pomona is a city in Los Angeles County, California, United States.

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Power station

A power station, also referred to as a power plant or powerhouse and sometimes generating station or generating plant, is an industrial facility for the generation of electric power.

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Power supply

A power supply is an electrical device that supplies electric power to an electrical load.

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Q factor

In physics and engineering the quality factor or Q factor is a dimensionless parameter that describes how underdamped an oscillator or resonator is, and characterizes a resonator's bandwidth relative to its centre frequency.

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Radian per second

The radian per second (symbol: rad·s−1 or rad/s) is the SI unit of rotational speed (angular velocity), commonly denoted by the Greek letter ω (omega).

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Radio frequency

Radio frequency (RF) refers to oscillatory change in voltage or current in a circuit, waveguide or transmission line in the range extending from around twenty thousand times per second to around three hundred billion times per second, roughly between the upper limit of audio and the lower limit of infrared.

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Rail transport

Rail transport is a means of transferring of passengers and goods on wheeled vehicles running on rails, also known as tracks.

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Redlands, California

Redlands is a city in San Bernardino County, California, United States.

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Ripple (electrical)

Ripple (specifically ripple voltage) in electronics is the residual periodic variation of the DC voltage within a power supply which has been derived from an alternating current (AC) source.

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Rome (Roma; Roma) is the capital city of Italy and a special comune (named Comune di Roma Capitale).

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Root mean square

In statistics and its applications, the root mean square (abbreviated RMS or rms) is defined as the square root of the mean square (the arithmetic mean of the squares of a set of numbers).

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Sebastian Ziani de Ferranti

Sebastian Pietro Innocenzo Adhemar Ziani de Ferranti (9 April 1864 – 13 January 1930) was a British electrical engineer and inventor.

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The second is the SI base unit of time, commonly understood and historically defined as 1/86,400 of a day – this factor derived from the division of the day first into 24 hours, then to 60 minutes and finally to 60 seconds each.

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Sine wave

A sine wave or sinusoid is a mathematical curve that describes a smooth periodic oscillation.

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Single-phase electric power

In electrical engineering, single-phase electric power is the distribution of alternating current electric power using a system in which all the voltages of the supply vary in unison.

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Skin effect

Skin effect is the tendency of an alternating electric current (AC) to become distributed within a conductor such that the current density is largest near the surface of the conductor, and decreases with greater depths in the conductor.

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Split-phase electric power

A split-phase or single-phase three-wire system is a type of single-phase electric power distribution.

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Square wave

A square wave is a non-sinusoidal periodic waveform in which the amplitude alternates at a steady frequency between fixed minimum and maximum values, with the same duration at minimum and maximum.

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The stator is the stationary part of a rotary system, found in electric generators, electric motors, sirens, mud motors or biological rotors.

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Sweden (Sverige), officially the Kingdom of Sweden (Swedish), is a Scandinavian country in Northern Europe.

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Switzerland, officially the Swiss Confederation, is a sovereign state in Europe.

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Symmetrical components

In electrical engineering, the method of symmetrical components simplifies analysis of unbalanced three-phase power systems under both normal and abnormal conditions.

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A telephone, or phone, is a telecommunications device that permits two or more users to conduct a conversation when they are too far apart to be heard directly.

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In electrical engineering, three-phase electric power systems have at least three conductors carrying alternating current voltages that are offset in time by one-third of the period.

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Three-phase electric power

Three-phase electric power is a common method of alternating current electric power generation, transmission, and distribution.

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Traction motor

A traction motor is an electric motor used for propulsion of a vehicle, such as an electric locomotive or electric roadway vehicle.

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A transformer is a static electrical device that transfers electrical energy between two or more circuits through electromagnetic induction.

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Triangle wave

A triangle wave is a non-sinusoidal waveform named for its triangular shape.

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Turin (Torino; Turin) is a city and an important business and cultural centre in northern Italy.

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Twisted pair

Twisted pair cabling is a type of wiring in which two conductors of a single circuit are twisted together for the purposes of improving electromagnetic compatibility.

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University of Florida

The University of Florida (commonly referred to as Florida or UF) is an American public land-grant, sea-grant, and space-grant research university on a campus in Gainesville, Florida.

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University of Pavia

The University of Pavia (Università degli Studi di Pavia, UNIPV or Università di Pavia; Ticinensis Universitas) is a university located in Pavia, Lombardy, Italy.

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Utility frequency

The utility frequency, (power) line frequency (American English) or mains frequency (British English) is the nominal frequency of the oscillations of alternating current (AC) in an electric power grid transmitted from a power station to the end-user.

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Vacuum cleaner

A vacuum cleaner, also known as a sweeper or hoover, is a device that uses an air pump (a centrifugal fan in all but some of the very oldest models), to create a partial vacuum to suck up dust and dirt, usually from floors, and from other surfaces such as upholstery and draperies.

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The volt (symbol: V) is the derived unit for electric potential, electric potential difference (voltage), and electromotive force.

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Voltage, electric potential difference, electric pressure or electric tension (formally denoted or, but more often simply as V or U, for instance in the context of Ohm's or Kirchhoff's circuit laws) is the difference in electric potential between two points.

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War of the currents

The war of the currents (sometimes called battle of the currents) was a series of events surrounding the introduction of competing electric power transmission systems in the late 1880s and early 1890s.

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A waveform is the shape and form of a signal such as a wave moving in a physical medium or an abstract representation.

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Waveguide (electromagnetism)

In electromagnetics and communications engineering, the term waveguide may refer to any linear structure that conveys electromagnetic waves between its endpoints.

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In physics, the wavelength is the spatial period of a periodic wave—the distance over which the wave's shape repeats.

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Westinghouse Electric Corporation

The Westinghouse Electric Corporation was an American manufacturing company.

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William Stanley Jr.

William Stanley Jr. (November 28, 1858 – May 14, 1916) was an American physicist born in Brooklyn, New York.

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Wireless communication, or sometimes simply wireless, is the transfer of information or power between two or more points that are not connected by an electrical conductor.

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Yablochkov candle

A Yablochkov candle (sometimes electric candle) is a type of electric carbon arc lamp, invented in 1876 by Pavel Yablochkov.

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AC Mains, AC current, AC electricity, AC frequency, AC mains, AC voltage, Alternate Current, Alternate current, Alternating Current, Alternating Current Power, Alternating current electric power, Alternating-current, Alternating-current circuit theory, Alternating-current electric power, Alternating-current generator, Alternating-current motor, Effective power, Oscillating current, Root mean square AC voltage, V ac, .


[1] https://en.wikipedia.org/wiki/Alternating_current

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