Electro magnetic coil using PWM drive

Discussion in 'General Electronics Chat' started by imneoleo, Jun 29, 2011.

  1. imneoleo

    Thread Starter New Member

    Jun 28, 2011
    1
    0
    Hi friends,
    This is the first time I'm posting a thread. Hope I done better. My request is I want to know how can we control a Electro-magnetic coil using PWM? If any one knows please send me links.
     
  2. #12

    Expert

    Nov 30, 2010
    16,261
    6,770
    Control it to do what?
     
  3. JDT

    Well-Known Member

    Feb 12, 2009
    658
    85
    Basically, like this.

    The important thing is to have a path for the coil current to flow when the PWM is off. A "freewheel diode" is used. See picture.
     
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