Out of curiosity...electricians please | FerrariChat

Out of curiosity...electricians please

Discussion in 'Technical Q&A' started by afterburner, Feb 10, 2018.

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  1. afterburner

    afterburner F1 Rookie
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    Jun 20, 2008
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    Hong Kong
    #1 afterburner, Feb 10, 2018
    what is the function of the two coils around a core linking the power supplies to the brushes of the Mondial interior fan motor?

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  2. Bdel

    Bdel Formula Junior

    Nov 3, 2003
    358
    Hollis, NH
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    Bruce
    #2 Bdel, Feb 10, 2018
    looks like a transformer to me. current in the coils creates a magnetic field. Different numbers of windings on each side, multiply/divide the voltage. It is possible the 12V from the battery is multiplied up to run the motor?
     
  3. andyww

    andyww F1 Rookie

    Feb 7, 2011
    2,775
    London
    #3 andyww, Feb 10, 2018
    Its a choke designed to reduce electrical noise from being fed back into the cars wiring.
     
  4. afterburner

    afterburner F1 Rookie
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    #4 afterburner, Feb 10, 2018
    Thanks Bruce, I thought a transformer would need two adjacent differently wound coils to transform. This is one wound wire around one core leading from the connector to the brush, each side.

    Thanks Andy: That sounds right. I didn't know that, thanks for your explanation.

    Search on Wikipedia:
    A choke is an inductor used to block higher-frequency AC, while passing lower-frequency DC.
    A choke usually consists of a coil of insulated wire often wound on a magnetic core.
     

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