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    Conventional speed control circuit of ceiling fan

    What kind of circuit is used to control the speed of the single phase induction motor of the commercial ceiling fan and table fan.

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    Re: Conventional speed control circuit of ceiling fan

    Conventional fan controls I've seen here use capacitor-start to start the motor and a simple potentiometer in the switchboard to control the voltage to the fan thereby changing it's speed.
    I'm here to learn and possibly help.



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    Re: Conventional speed control circuit of ceiling fan

    The most ancient speed controls used an L-pad. Simple, fairly
    low loss, and hard to find anymore.

    Inductive loads can be controlled by triac / SCR dimmer styles
    but there is more voltage applied at the current-zero-crossing
    which the design has to accommodate (lamp dimmers have it
    easy). This is really just component selection (but you need
    to have the right goals).

    There's a lot of stuff out there on "triac induction motor speed
    control".


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