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impedance Line breaks: im|ped¦ance
Pronunciation: /ɪmˈpiːd(ə)ns/

Definition of impedance in English:


The effective resistance of an electric circuit or component to alternating current, arising from the combined effects of ohmic resistance and reactance. See also acoustic impedance.
  • Impedance is usually expressed as a complex quantity Z = R + jX, where R is resistance, X is reactance, and j is the imaginary square root of −1
Example sentences
  • The constant impedance is maintained despite changes in temperature and voltage by using two external resistors to hold the impedances for all the I / O pins, which can number hundreds in the larger parts.
  • An impedance matching circuit is provided for each signal-carrying wire pair of the first and second wire pair sets.
  • The transponder alters the impedance of the tuned circuit in accordance with the coded pattern.

Words that rhyme with impedance

antecedence, credence
Definition of impedance in:
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