| 摘要 |
PROBLEM TO BE SOLVED: To reduce AC resistance, while suppressing increase in size of a transformer.SOLUTION: A transformer structure includes an upper core 200A, a lower core, a winding frame, a planar winding constituting a primary winding 202 wound around the core, and a secondary winding wound around the core. The planar winding has a first conductor 255, the perpendicular direction of the principal surface of which is in parallel with the scroll of the secondary winding, and a second conductor 256 connected with the first conductor and provided on the inner peripheral side of the planar winding. The second conductor 256 is thicker than the first conductor 255 in the scroll direction of the secondary winding.SELECTED DRAWING: Figure 2 |
