Capacitor value calculation across DC motor

Discussion in 'General Electronics Chat' started by ketan034, May 19, 2015.

  1. ketan034

    Thread Starter New Member

    May 15, 2015
    3
    0
    hello friends,
    In dc motor if there is spark problem we are using capacitor across the motor
    How to calculate the value of this capacitor with respect to motor parameters..?
     
  2. DickCappels

    Moderator

    Aug 21, 2008
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    632
    What kind of spark problem?
     
  3. ketan034

    Thread Starter New Member

    May 15, 2015
    3
    0
    capacitor is used to suppress the high frequency electrical noise in DC motor but how actually it works (mathematical module..?). to calculate value of capacitor value???..thanks
     
  4. DickCappels

    Moderator

    Aug 21, 2008
    2,647
    632
    It presents a low impedance to the high frequency noise. It is common to place one capacitor from each conductor to ground, or better yet to the case of the motor. The capacitors can be combined with various kinds of inductors to improve performance. There is no one-size-fits-all design equation, but maybe this document will give you the information you seek
    www.x2y.com/publications/dcmotors/feb14-05.pdf
     
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