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Why do we use the starter for a DC motor?
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Large DC motors with field windings instead of permanent magnets have a very heavy load when starting. To prevent fuses from blowing, a series of small resistors are sequentially switched in series with the motor. As the motor picks up speed, a back EMF in opposition to the applied voltage limits the maximum current. When the motor reaches its running speed, the ‘starter’ is out of the circuit
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