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Direct current (DC) is the unidirectional flow of electric charge. [1]

60 relations: Alternating current, Alternator, Aluminium, Archaism, Battery (electricity), Bias tee, Capacitor, Cathode ray, Current source, DC bias, DC connector, DC-to-DC converter, Differential equation, Digital subscriber line access multiplexer, Diode bridge, Dynamo, Electric charge, Electric current, Electric power, Electric power transmission, Electrical conductor, Electrical connector, Electrical network, Electrochemistry, Electrolysis, Electronics, Extra-low voltage, Fuel cell, Ground (electricity), High-voltage direct current, Inductor, Insulator (electricity), Light fixture, Low voltage, Miscellaneous Technical, Neutral direct-current telegraph system, NorNed, Power inverter, Power supply, Rail transport, Rectifier, Resistor, Semiconductor, Solar cell, Solar power, Stationary process, Steady state (electronics), Switch, Telephone, Telephone exchange, ..., Thermocouple, Third rail, Thomas Edison, Transient state, Twisted pair, Vacuum, Voltage, Voltage regulator, Voltage source, War of Currents. Expand index (10 more) »

Alternating current

Alternating current (AC), is an electric current in which the flow of electric charge periodically reverses direction, whereas in direct current (DC, also dc), the flow of electric charge is only in one direction.

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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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Aluminium (or aluminum; see) is a chemical element in the boron group with symbol Al and atomic number 13.

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In language, an archaism (from the ἀρχαϊκός, archaïkós, 'old-fashioned, antiquated', ultimately ἀρχαῖος, archaîos, 'from the beginning, ancient') is the use of a form of speech or writing that is no longer current or that is current only within a few special contexts.

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Battery (electricity)

An electric battery is a device consisting of two or more electrochemical cells that convert stored chemical energy into electrical energy.

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Bias tee

A bias tee is a three port network used for setting the DC bias point of some electronic components without disturbing other components.

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A capacitor (originally known as a condenser) is a passive two-terminal electrical component used to store electrical energy temporarily in an electric field.

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Cathode ray

Cathode rays (also called an electron beam or e-beam) are streams of electrons observed in vacuum tubes.

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Current source

A current source is an electronic circuit that delivers or absorbs an electric current which is independent of the voltage across it.

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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 value of the waveform.

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DC connector

A DC connector (or DC plug, for one common type of connector) is an electrical connector for supplying direct current (DC) power.

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DC-to-DC converter

A DC-to-DC converter is an electronic circuit which converts a source of direct current (DC) from one voltage level to another.

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Differential equation

A differential equation is a mathematical equation that relates some function with its derivatives.

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Digital subscriber line access multiplexer

A digital subscriber line access multiplexer (DSLAM, often pronounced dee-slam) is a network device, often located in telephone exchanges, that connects multiple customer digital subscriber line (DSL) interfaces to a high-speed digital communications channel using multiplexing techniques.

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Diode bridge

A diode bridge is an arrangement of four (or more) diodes in a bridge circuit configuration that provides the same polarity of output for either polarity of input.

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A dynamo is an electrical generator that produces direct current with the use of a commutator.

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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 power

Electric power is the rate at which electrical energy is transferred by an electric circuit.

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Electric power transmission

Electric power transmission is the bulk transfer of electrical energy, from generating power plants to electrical substations located near demand centers.

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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 electrical current in one or more directions.

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Electrical connector

An electrical connector is an electro-mechanical device for joining electrical circuits as an interface using a mechanical assembly.

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Electrical network

An electrical network is an interconnection of electrical components (e.g. batteries, resistors, inductors, capacitors, switches) or a model of such an interconnection, consisting of electrical elements (e.g. voltage sources, current sources, resistances, inductances, capacitances).

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Electrochemistry is the branch of physical chemistry that studies chemical reactions which take place at the interface of an electrode, usually a solid metal or a semiconductor, and an ionic conductor, the electrolyte.

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In chemistry and manufacturing, electrolysis is a technique that uses a direct electric current (DC) to drive an otherwise non-spontaneous chemical reaction.

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Electronics is the science of how to control electric energy, energy in which the electrons have a fundamental role.

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Extra-low voltage

Extra-low voltage (ELV), in electricity supply, is one of several means to protect against electrical shock.

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Fuel cell

A fuel cell is a device that converts the chemical energy from a fuel into electricity through a chemical reaction of positively charged hydrogen ions with oxygen or another oxidizing agent.

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Ground (electricity)

In electrical engineering, ground or earth is the reference point in an electrical circuit from which voltages are measured, a common return path for electric current, or a direct physical connection to the Earth.

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High-voltage direct current

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

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An inductor, also called a coil or reactor, is a passive two-terminal electrical component which resists changes in electric current passing through it.

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Insulator (electricity)

An electrical insulator is a material whose internal electric charges do not flow freely, and therefore make it impossible to conduct an electric current under the influence of an electric field.

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Light fixture

A light fixture (US English), light fitting (UK English), or luminaire is an electrical device used to create artificial light by use of an electric lamp.

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Low voltage

Low voltage is a relative term, the definition varying by context.

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Miscellaneous Technical

Miscellaneous Technical is the name of a Unicode block ranging from U+2300 to U+23FF, which contains various common symbols which are related to and used in the various technical, programming language, and academic professions.

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Neutral direct-current telegraph system

In telecommunication, a neutral direct-current telegraph system (single-current system, single-current transmission system, single-Morse system) is a telegraph system in which (a) current flows during marking intervals and no current flows during spacing intervals for the transmission of signals over a line, and (b) the direction of current flow is immaterial.

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NorNed is a long high-voltage direct current submarine power cable between Feda in Norway and the seaport of Eemshaven in the Netherlands, which interconnects both countries' electrical grids.

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Power inverter

A power inverter, or inverter, is an electronic device or circuitry that changes direct current (DC) to alternating current (AC).

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Power supply

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

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Rail transport

Rail transport is a means of conveyance of passengers and goods, by way of wheeled vehicles running on rails.

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A rectifier is an electrical device that converts alternating current (AC), which periodically reverses direction, to direct current (DC), which flows in only one direction.

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A resistor is a passive two-terminal electrical component that implements electrical resistance as a circuit element.

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A semiconductor material has an electrical conductivity value falling between that of a conductor, such as copper, and an insulator, such as glass.

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Solar cell

See also Photovoltaics A solar cell, or photovoltaic cell, is an electrical device that converts the energy of light directly into electricity by the photovoltaic effect, which is a physical and chemical phenomenon.

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Solar power

Solar power is the conversion of sunlight into electricity, either directly using photovoltaics (PV), or indirectly using concentrated solar power (CSP).

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Stationary process

In mathematics and statistics, a stationary process (or strict(ly) stationary process or strong(ly) stationary process) is a stochastic process whose joint probability distribution does not change when shifted in time.

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Steady state (electronics)

In electronics, steady state is an equilibrium condition of a circuit or network that occurs as the effects of transients are no longer important.

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In electrical engineering, a switch is an electrical component that can break an electrical circuit, interrupting the current or diverting it from one conductor to another.

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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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Telephone exchange

A telephone exchange is a telecommunications system used in the public switched telephone network or in large enterprises.

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A thermocouple is a device consisting of two dissimilar conductors or semiconductors that contact each other at one or more points.

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Third rail

A third rail is a method of providing electric power to a railway train, through a semi-continuous rigid conductor placed alongside or between the rails of a railway track.

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Thomas Edison

Thomas Alva Edison (February 11, 1847 – October 18, 1931) was an American inventor and businessman.

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Transient state

A system is said to be in a transient state when a process variable has been changed and the system has not yet reached steady-state.

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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 canceling out electromagnetic interference (EMI) from external sources; for instance, electromagnetic radiation from unshielded twisted pair (UTP) cables, and crosstalk between neighboring pairs.

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Vacuum is space void of matter.

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Voltage, electric potential difference, electric pressure or electric tension (denoted or) is the difference in electric potential energy between two points per unit electric charge.

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Voltage regulator

A voltage regulator is designed to automatically maintain a constant voltage level.

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Voltage source

A voltage source is a two terminal device which can maintain a fixed voltage.

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War of Currents

The War of Currents (sometimes, War of the Currents or Battle of Currents) was a series of events surrounding the introduction of competing electric power transmission systems in the late 1880s and early 1890s including commercial competition, a debate over electrical safety, and a media/propaganda campaign that grew out of it, with the main players being the direct current (DC) based Edison Electric Light Company and the alternating current (AC) based Westinghouse Electric Company.

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Continous current, Continuous current, DC current, DC electricity, DC machines, DC power, DC voltage, Direct Current, Direct circuit circuit, Direct current circuit, Direct-current, Direct-current electricity, Electric direct current, Galvanic current, LVDC, .


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

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