An Understandable and Inexpensive Design: A permanent electromagnetic field is created in the stator, or fixed section, of the electric motor by either long-term magnets, which are common in fractional horsepower applications, or electro-magnetic windings, which are used in applications that require five or even more horsepower.
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Load Control: The lots, or torque, control is basic. The outcome torque is symmetrical to the current, so if you restrict the present, you limit the torque it can take. This is one factor why these DC engines are made use of for applications such as textile production.