Glossary of electrical and electronics engineering: Difference between revisions

Revision as of 18:01, 14 January 2021

Revision as of 10:07, 25 January 2021

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{{term|[[AC adapter]]}}

{{defn|An external power supply for portable devices that allows them to operate from wall-socket electricity.}}

{{term|[[AC capacitor]]}}

{{defn|A {{gli|capacitor}} essentially designed for operation with {{gli|alternating current|alternating voltage}}.<ref name=":0" /></br>NOTE — AC capacitors may be used with dc voltage up to the rated voltage only by permission of the capacitor manufacturer.}}

{{term|[[AC power plugs and sockets]]}}

{{defn|Electrical connectors used with {{gli|alternating current}}.}}

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{{term|[[capacitor]]}}

{{defn|An electrical component that stores energy in an electric field.}}

{{term|[[capacitor bank]]}}

{{defn|An assembly of one or more {{gli|capacitor unit|capacitor units}}, electrically connected to each other.<ref name=":0">{{Cite book|last=|first=|url=https://archive.org/embed/gov.in.is.13648.1993|title=IS 13648: Power electronics capacitors|publisher=[[Bureau of Indian Standards]]|year=1993|isbn=|___location=|page=1|pages=}}</ref>}}

{{term|[[capacitor element]]}}

{{defn|An indivisible part of the {{gli|capacitor}} consisting of two electrodes separated by a {{gli|dielectric}}.<ref name=":0" />}}

{{term|[[capacitor equipment]]}}

{{defn|An assembly of {{gli|capacitor unit|capacitor units}} and their accessories intended for connection to a {{gli|network}}.<ref name=":0" />}}

{{term|[[capacitor-input filter]]}}

{{defn|A power supply network where a capacitor is the first element following the rectifier.}}

{{term|[[capacitor unit]]}}

{{defn|An assembly of one or more {{gli|capacitor element|capacitor elements}} in the same container with {{gli|terminal|terminals}} brought out.<ref name=":0" />}}

{{term|[[capacitor voltage transformer]]}}

{{defn|In electrical power systems, an instrument transformer for measuring {{gli|voltage}} that uses a capacitive voltage divider.}}

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{{compact ToC|side=yes|center=yes|nobreak=yes|top=yes|seealso=yes|refs=yes|num=yes|extlinks=yes|}}

==D==

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{{term|[[data networks]]}}

{{defn|A network for interconnection of computers and peripherals.}}

{{term|[[DC capacitor]]}}

{{defn|A {{gli|capacitor}} essentially designed for operation with direct voltage.<ref name=":0" /></br>NOTE — DC capacitors may be used with ac voltage only by permission of the capacitor manufacturer.}}

{{term|[[DC injection braking]]}}

{{defn|A method of slowing an AC electric motor by passing {{gli|direct current}} through its windings.}}

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{{term|[[inrush current]]}}

{{defn|The transient current that flows when first connecting a device to a power source.}}

{{term|[[internal fuse]]}}

{{defn|A device incorporated in the {{gli|capacitor}} which disconnects an element or a group of elements in the event of breakdown.<ref name=":0" />}}

{{term|[[Institute of Electrical and Electronics Engineers]] (IEEE)}}{{defn|The American-based society for electrotechnology.}}

{{term|[[Institution of Engineering and Technology]]}}

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{{term|[[Metadyne]]}}

{{defn|A DC electric machine with crossed fields and two sets of brushes, used as an amplifier or rotary DC transformer.}}

{{term|[[metal-foil capacitor]]}}

{{defn|A {{gli|capacitor}} in which the {{gli|electrode|electrodes}} usually consist of metal foils separated by a {{gli|dielectric}},in the event of breakdown of the dielectric, the capacitor does not restore itself.<ref name=":0" />}}

{{term|[[metal rectifier]]}}

{{defn|A {{gli|rectifier}} made from copper oxide or selenium; formerly widely used before development of silicon rectifiers.}}

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{{term|[[Modbus]]}}

{{defn|A brand name for a serial protocol for industrial control equipment communication.}}

{{term|[[model capacitor]]}}

{{defn|A smaller unit which simulates a complete unit or element in an electrical test, without reducing the severity of the electrical, thermal or mechanical conditions.<ref name=":0" /></br>NOTE — The sum of stresses should always be considered, for instance the sum of temperature, mechanical conditions and electrical stresses.}}

{{term|[[model predictive control]]}}

{{defn|A control strategy for process systems based on a mathematical model of the process and its disturbances.}}

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{{term|[[overhead line]]}}

{{defn|Outside plant run on poles or other structures; power transmission or telecommunication wires.}}

{{term|[[overpressure disconnector]]}}

{{defn|A disconnecting device designed to interrupt the current path in the case of abnormal increase of the internal pressure.<ref name=":0" />}}

{{term|[[oversampling]]}}

{{defn|Sampling a signal at a rate higher than required by the Nyquist criterion.}}

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{{term|[[power distribution]]}}{{defn|That portion of an electrical grid between the substation or bulk supply and the end consumer.}}

{{term|[[power electronics]]}}{{defn|The class of electronic devices handling power greater than a watt.}}

{{term|[[power electronics capacitor]]}}{{defn|A power capacitor intended to be used in {{gli|power electronic}} equipment and capable of operating continuously under non-sinusoidal {{gli|current}} or {{gli|voltage}}.<ref name=":0" />}}

{{term|[[power engineering]]}}{{defn|That part of electrical engineering that deals with the generation, distribution and consumption of electrical power.}}

{{term|[[power-factor correction]]}}{{defn|Apparatus intended to bring the power factor of some load closer to 1.}}

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{{term|[[segmentation (image processing)|segmentation]]}}{{defn|A step in digital image processing that groups picture elements of an image that notionally represent some physically significant property of the imaged objects.}}

{{term|[[selenium rectifiers]]}}{{defn|One type of metal rectifier, though selenium is considered a "metalloid"{{Snd}} formerly much used but now replaced by silicon semiconductors.}}

{{term|[[self-healing metallized dielectric capacitor]]}}{{defn|A {{gli|capacitor}}, the {{gli|electrode|electrodes}} of which are deposited on the dielectric (usually by evaporation); in the event of breakdown of the dielectric, the capacitor restores itself.<ref name=":0" />}}

{{term|[[semiconductor]]}}{{defn|A substance with electrical conductivity between that of insulators and conductors; displays a negative temperature coefficient of resistance, and is also sensitive to light. The conductivity of semiconductors can readily be altered by trace amounts of other substances, leading to devices that are the foundation of nearly all modern electronics.}}

{{term|[[semiconductor device]]}}{{defn|A device that relies on substances with electrical conductivity between that of insulators and conductors; the controllable conductivity of these materials makes most of modern electronics possible.}}

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*[[Glossary of structural engineering]]

== References ==

{{reflist}}

{{Engineering fields}}

{{Glossaries of science and engineering}}