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What is impedance?

Discussion in 'General Electronics Discussion' started by J.E, Apr 1, 2011.

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  1. J.E

    J.E

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    Apr 1, 2011
    What's does impedance means? Is it same as resistance?
     
  2. duke37

    duke37

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    Jan 9, 2011
    Only with no reactive components or with direct current. The maths can be complex, see Wikipedia.
     
  3. davenn

    davenn Moderator

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    Sep 5, 2009
    hi JE,
    welcome to the forums

    no, not the same as resistance. Tho it is still measured in Ohms
    when referring to plain resistance it is the context of a current flowing in a DC circuit

    Impedance is the measure of the opposition to the flow current flowing in an AC circuit, including everything from low frequency 50 or 60Hz AC mains right up to the microwave radio frequencies

    Imedance is a complex mix of 3 things in an AC circuit; the aggregation of its resistance, inductive reactance and capacitive reactance

    cheers
    Dave
     
  4. J.E

    J.E

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    Apr 1, 2011
    Thanks! for the response.:D
     
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