alternating current impedance

alternating current impedance

Англо-русский словарь промышленной и научной лексики. 2014.

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  • Alternating current — (green curve). The horizontal axis measures time; the vertical, current or voltage. In alternating current (AC, also ac) the movement of electric charge periodically reverses direction. In direct current (DC, also dc), the flow of electric charge …   Wikipedia

  • Flexible Alternating Current Transmission System — Système de transmission flexible en courant alternatif Pour les articles homonymes, voir Facts. Un système de transmission flexible en courant alternatif, est un équipement d électronique de puissance d appoint utilisé pour contrôler la tension,… …   Wikipédia en Français

  • Impedance — Im*ped ance, n. [Impede + ance.] (Elec.) The apparent resistance in an electric circuit to the flow of an alternating current, analogous to the actual electrical resistance to a direct current, being the ratio of electromotive force to the… …   The Collaborative International Dictionary of English

  • impedance — [im pēd′ ns] n. [< IMPED(E) + ANCE] 1. the total opposition offered by an electric circuit to the flow of an alternating current of a single frequency: it is a combination of resistance and reactance and is measured in ohms: the reciprocal of… …   English World dictionary

  • Impedance matching — In electronics, impedance matching is the practice of designing the input impedance of an electrical load (or the output impedance of its corresponding signal source) to maximize the power transfer and/or minimize reflections from the load.… …   Wikipedia

  • Current transformer — A CT for operation on a 110 kV grid In electrical engineering, a current transformer (CT) is used for measurement of electric currents. Current transformers, together with voltage transformers (VT) (potential transformers (PT)), are known as …   Wikipedia

  • impedance — 1. Total opposition to flow. In electricity, when flow is steady, i. is simply the resistance, e.g., the driving pressure per unit flow; when flow is changing, i. also includes the factors that oppose changes in flow. Thus, deviations of i., from …   Medical dictionary

  • impedance —    An electrical property of a cable that combines capacitance (the ability to store an electrical charge), inductance (the ability to store energy in the form of a magnetic field), and resistance (the ability to impede or resist the flow of… …   Dictionary of networking

  • impedance — /ɪmˈpidns / (say im peedns) noun 1. Electricity the apparent resistance, or total opposition to current of an alternating current circuit, consisting of two components, reactance and true or ohmic resistance. 2. Physics → acoustic impedance.… …   Australian-English dictionary

  • impedance — noun a) A measure of the opposition to the flow of an alternating current in a circuit; the aggregation of its resistance, inductive and capacitive …   Wiktionary

  • impedance — /im peed ns/, n. 1. Elect. the total opposition to alternating current by an electric circuit, equal to the square root of the sum of the squares of the resistance and reactance of the circuit and usually expressed in ohms. Symbol: Z 2. Also… …   Universalium

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