| 摘要 |
PURPOSE:To prevent short circuits between ring yokes and zero potential parts, by providing conducting sheets, which are extended from the inner surface end to the outer surface end of each ring yoke in a part, where leg iron cores are overlapped. CONSTITUTION:Conducting sheets 51A-53A of the upper end surface of an upper ring yoke 1A and conducting sheets 61A-63A at the lower surface are arranged at positions corresponding to leg iron cores 21-23 so as to face to each other. Each conducting sheet is electrically connected to the upper ring yoke 1A. Conducting sheets 51B-53B and 61B-63B are provided at positions corresponding to the leg iron cores 21-23 in a bonded manner by the similar way at the upper surface and the lower surface of a lower ring yoke 1B. The inner surface ends of the ring yokes 1A and 1B are grounded. When high frequency impulses are inputted to windings and charges are inputted to the ring yokes 1A and 1B, the charges flow to the inner surface ends of the ring yokes 1A and 1B through the conducting sheets and discharged to the ground through grounding lines. |
