Methods for reducing stray inductance of wires

Discussion in 'General Electronics Chat' started by rrrchandu, Aug 13, 2013.

  1. rrrchandu

    Thread Starter New Member

    Aug 9, 2010
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    I am trying to build a circuit. I want to reduce stray inductance as much as possible. Help with some techniques if there are any.


    Thanks in advance...:confused:
     
  2. WBahn

    Moderator

    Mar 31, 2012
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    Use larger wire diameter and keep them as short as possible. Avoid loops and be mindful of virtual loops created by image currents.
     
  3. Wendy

    Moderator

    Mar 24, 2008
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    Image currents?
     
  4. WBahn

    Moderator

    Mar 31, 2012
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    Yep. Image currents.

    Remember that we call them circuits for a reason. So whatever current is flowing in a wire has to come from somewhere and get back to that same somewhere. That's a current loop and it will radiate and pick up just like a physical loop since it's the current path that counts.

    In general, when a choice is available, the path chosen by the return currents will be the one that more-or-less minimizes the loop area from all of the available paths (there are other factors that prevent this from being rigorous, but that is the natural goal that the physics strives for, especially as the frequency gets higher). But if your design layout forces that minimum area to be large, then you have a large inductive loop to contend with.
     
  5. tindel

    Well-Known Member

    Sep 16, 2012
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    Last edited: Aug 13, 2013
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