Homopolar motor (Electrical Component)
Homopolar motor
1821 AD
A direct current electric motor with two magnetic poles, the conductors of which always cut unidirectional lines of magnetic flux by rotating a conductor around a fixed axis so that the conductor is at right angles to a static magnetic field.
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The resulting force is continuous in one direction, so the homopolar motor needs no commutator but still requires slip rings.
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The name homopolar indicates that the electrical polarity of the conductor and the magnetic field poles do not change (i.e., that it does not require commutation).
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