how to reduce coil capacitance

Discussion in 'General Electronics Chat' started by tamya568, Sep 24, 2012.

  1. tamya568

    Thread Starter New Member

    Sep 24, 2012
    2
    0
    Hi,
    am struggling to get answer to this problem, need help plz
    Problem is: I have 5km of twin core wire wounded upon a aluminium spool, when i measure the capacitance its 1.4mF, but to make it function in the system the capacitance has to be less than 0.9mF. the spool if unwinded may not be re-usable. so in as-is condition is there a way to get the value down?
     
  2. Dodgydave

    Distinguished Member

    Jun 22, 2012
    4,965
    743
    Put a capacitor in series with the wire cable, this will lower the capacitance say a 2uF ,that
    will lower it to 0.8uF.
     
  3. tamya568

    Thread Starter New Member

    Sep 24, 2012
    2
    0
    thanks.. i shall try and come back if not solved
     
  4. crutschow

    Expert

    Mar 14, 2008
    12,974
    3,220
    What is the coil being used for?
     
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