| 摘要 |
<p>PURPOSE:To realize stable operation at a high frequency, prevent noise from affecting surrounding parts, and avoid generation of loss, by winding and arraigning a plurality of adjacent lead wires, making one part of the lead wires a primary conductor, making the other part a secondary conductor, and covering them with magnetic substance via nonmagnetic substance. CONSTITUTION:Two lead wires C11, C12 are made to approach each other in parallel, and winded en bloc in a planar type. The lead wires C11 and C12 have nearly equal length and diameter. A primary conductor and a secondary conductor are arranged on both sides except the innermost periphery and the outermost periphery. On the surface of conductor C, sufficiently thick nonconductive nonmagnetic substance NM is arranged, on the surface of which magnetic substance Mm is arranged. Thereby stable operation at a high frequency is obtained, and main magnetic flux is not made to pass magnetic substance, so that a shield type air-core transformer wherein iron loss does not exist and efficiency is high can be obtained.</p> |
