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How to simulate skin effect in transient analysis?

Discussion in 'CAD' started by Greg, Jul 16, 2005.

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  1. Greg

    Greg Guest

    Hi,
    in most spice versions it is not a problem to simulate the skin effect
    (maybe of an inductor) for AC analysis as there is often the variable
    "freq" and you can assign a series resistor (in series to the
    inductor...) the value "skin*squareroot(freq)".
    But in transient analysis there is no variable freq. How can one
    simulate a frequency dependent resistor there?

    Greg
     
  2. Jim Thompson

    Jim Thompson Guest

    You have to make up a multi-lump model. I have a simplified wirebond
    model good up to a few GHz. I can post it if you are interested.

    ...Jim Thompson
     
  3. Greg

    Greg Guest

    Jim,

    I would be very glad if you could post it.

    Greg
     
  4. Jim Thompson

    Jim Thompson Guest

    See...

    Newsgroups: alt.binaries.schematics.electronic
    Subject: My Wirebond Model for Spice Simulation - MyWirebond.pdf
    Message-ID: <>

    ...Jim Thompson
     
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