| 摘要 |
PURPOSE: A DC motor is provided to use both two brushes and four brushes by winding a coil in the opposite direction to a permanent magnet. CONSTITUTION: A commutator is installed to be rotated with a rotary shaft. The commutator is composed of a plurality of commutator pieces(50). A plurality of permanent magnets(30) is installed along the circumference direction of the rotary shaft. A brush is slidably installed on the commutator to supply electricity to the commutator. A coil(70) is electrically connected to the commutator pieces by being wound around the core.
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