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Impedance - Dictionary Definition and Overview |
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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 current. It is equal to root{R^{2
_ X^{2}, where R = ohmic resistance, X = reactance. For an
inductive circuit, X = 2[pi]fL, where f = frequency and L =
self-inductance; for a circuit with capacity X = 1 [div]
2[pi]fC, where C = capacity.
Based on Webster's Revised Unabridged Dictionary
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Impedance :
Opposition to flow of alternating
current. Impedance consists of resistance plus reactance
(capacitive or inductive). Measured in Ohms.
(2003-12-02)
Based on Webster's Revised Unabridged Dictionary (1913)
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Example Usage of Impedance |
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abletondenver: When Impedance finally matches (2 days later) the sound is so much sweeter. All hail balancing your input/output connections! |
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ValorCompSys: General PCB Design Layout : Controlled Impedance: Author: rfdesignerSubject: Controlled ImpedancePosted: 19 Decembe... http://bit.ly/5uuOZm |
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koswolf: Buying speakers for an old receiver us not easy work, apparently. All of the speakers they sell here have 8ohm Impedance, but our receiver 4 |
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