Matches in DBpedia 2014 for { <http://dbpedia.org/resource/Direct_current> ?p ?o. }
Showing items 1 to 44 of
44
with 100 items per page.
- Direct_current abstract "Direct current (DC) is the unidirectional flow of electric charge. Direct current is produced by sources such as batteries, thermocouples, solar cells, and commutator-type electric machines of the dynamo type. Direct current may flow in a conductor such as a wire, but can also flow through semiconductors, insulators, or even through a vacuum as in electron or ion beams. The electric current flows in a constant direction, distinguishing it from alternating current (AC). A term formerly used for direct current was galvanic current.The abbreviations AC and DC are often used to mean simply alternating and direct, as when they modify current or voltage.Direct current may be obtained from an alternating current supply by use of a current-switching arrangement called a rectifier, which contains electronic elements (usually) or electromechanical elements (historically) that allow current to flow only in one direction. Direct current may be made into alternating current with an inverter or a motor-generator set.The first commercial electric power transmission (developed by Thomas Edison in the late nineteenth century) used direct current. Because of the significant advantages of alternating current over direct current in transforming and transmission, electric power distribution is nearly all alternating current today. In the mid-1950s, high-voltage direct current transmission was developed, and is now an option instead of long-distance high voltage alternating current systems. For long distance underseas cables (e.g. between countries, such as NorNed), this is the only technically feasible option. For applications requiring direct current, such as third rail power systems, alternating current is distributed to a substation, which utilizes a rectifier to convert the power to direct current. See War of Currents.Direct current is used to charge batteries, and in nearly all electronic systems, as the power supply. Very large quantities of direct-current power are used in production of aluminum and other electrochemical processes. Direct current is used for some railway propulsion, especially in urban areas. High-voltage direct current is used to transmit large amounts of power from remote generation sites or to interconnect alternating current power grids.".
- Direct_current thumbnail Types_of_current.svg?width=300.
- Direct_current wikiPageExternalLink contents.htm.
- Direct_current wikiPageExternalLink pt13.pdf.
- Direct_current wikiPageExternalLink acdc.html.
- Direct_current wikiPageID "47713".
- Direct_current wikiPageRevisionID "598968793".
- Direct_current hasPhotoCollection Direct_current.
- Direct_current subject Category:American_inventions.
- Direct_current subject Category:Electric_current.
- Direct_current subject Category:Electric_power.
- Direct_current subject Category:Electrical_engineering.
- Direct_current comment "Direct current (DC) is the unidirectional flow of electric charge. Direct current is produced by sources such as batteries, thermocouples, solar cells, and commutator-type electric machines of the dynamo type. Direct current may flow in a conductor such as a wire, but can also flow through semiconductors, insulators, or even through a vacuum as in electron or ion beams. The electric current flows in a constant direction, distinguishing it from alternating current (AC).".
- Direct_current label "Corrente continua".
- Direct_current label "Corrente contínua".
- Direct_current label "Corriente continua".
- Direct_current label "Courant continu".
- Direct_current label "Direct current".
- Direct_current label "Gelijkstroom".
- Direct_current label "Gleichstrom".
- Direct_current label "Prąd stały".
- Direct_current label "Постоянный ток".
- Direct_current label "تيار مستمر".
- Direct_current label "直流".
- Direct_current label "直流電".
- Direct_current sameAs Stejnosměrný_proud.
- Direct_current sameAs Gleichstrom.
- Direct_current sameAs Συνεχές_ρεύμα.
- Direct_current sameAs Corriente_continua.
- Direct_current sameAs Korronte_zuzen.
- Direct_current sameAs Courant_continu.
- Direct_current sameAs Arus_searah.
- Direct_current sameAs Corrente_continua.
- Direct_current sameAs 直流.
- Direct_current sameAs 직류.
- Direct_current sameAs Gelijkstroom.
- Direct_current sameAs Prąd_stały.
- Direct_current sameAs Corrente_contínua.
- Direct_current sameAs m.0ctw5.
- Direct_current sameAs Q159241.
- Direct_current sameAs Q159241.
- Direct_current wasDerivedFrom Direct_current?oldid=598968793.
- Direct_current depiction Types_of_current.svg.
- Direct_current isPrimaryTopicOf Direct_current.
