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A capacitor is often used for "decoupling". The wires into any electrical appliance have inductance (because they are long and thin). This means that if there is a sudden increased demand in current, there will be a significant voltage drop. A capacitor can act as a "tiny battery" that briefly supplies this current while the main supply catches up. A fan ...


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Many fan motors are single phase, permanent split capacitor (PSC) induction motors. Single phase motors inherently have no starting torque and to get around this problem, engineers often "trick" the motor into thinking it is being supplied by 2 phases instead of one. This is done by adding a second set of windings to the motor that are physically offset to ...



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