| 摘要 |
PURPOSE: A double-core structure for a high-utility is provided to minimize the counter electromotive force by supplying a repulsive force according to the diamagnetic of the first magnetic induction core unit and the second magnetic induction core unit. CONSTITUTION: A first coil(110) is wound around a first core part(120). A second coil(210) is wound around a second core unit(220). A first magnetic induction core unit(300) is combined with one side of the second core unit and the first core part. A second magnetic induction core unit(400) is combined with the other side of the second core unit and the first core part. The first coil and the second coil are wound in an opposite direction.
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