| 摘要 |
PROBLEM TO BE SOLVED: To provide a DC reactor in which DC superposition characteristics can be enhanced even if the gap of a core cannot be secured sufficiently, and rapid decrease of inductance from the inflection point of the DC superposition characteristics can be minimized.SOLUTION: A pair of U-shaped cores 1 are arranged to face each other with a gap interposed between the legs 2 thereof. A first magnet 3 for enhancing the DC superposition characteristics by the magnetic bias characteristics is arranged in the gap. At the leg 2 of all cores 1, a second magnet 4 covering the gap is arranged so that the mutual magnetization direction is identical, and a coil 5 surrounding the legs 2 is arranged around the gap of at least one place, with the second magnet 4 interposed therebetween. |
