| 摘要 |
<p>PURPOSE:To obtain a transformer coil on which a layer insulating layer can be formed easily. CONSTITUTION:A plurality of layer wirings C1 to Cn are concentrically lap- wound by arranging layer insulating layers 3A1 to 3An inside the layer wirings. Each layer insulating layer is formed by spirally winding an insulating tape, which is narrower than the winding width of the layer wiring, in a partially overlapped manner. The insulating tape, which constitutes each layer insulating layer, is wound in such a manner that the thickness of the layer insulating layers is gradually increased as going to the end part in axial direction on the high side of layer voltage from the end part of the axial direction on the low side of layer voltage.</p> |
