| 摘要 |
PURPOSE:To reduce the effect of a magnetic flux generated from a plurality of winding coils such as transformer or choke coils in a switching power source by approaching the winding coils, and arranging the polarity of adjacent coils in different phases. CONSTITUTION:A copper wire 32 is wound spirally on a rod-shaped core 31. A current flowed to the wire 32 flows counterclockwise from above to below in a coil A, and clockwise from above to below in a coil B. The coil A becomes N-pole at the top and S-pole at the bottom by the both currents, and vise versa in the coil B. Lines 33 of magnetic force are formed from the N-pole of the coil A to the S-pole of the coil B, and the N-pole of the coil B to the S-pole of the coil A in the periphery of the two winding coils. |
