| 摘要 |
<p>PURPOSE:To facilitate the production of a miniatuarized transformer and facilitate the line production by forming a conductive pattern on a printed board, laminating the printed boards, integrating the laminates, forming a coil by connecting the conductive patterns and providing the laminate with a ferrite core. CONSTITUTION:A plurality of sections 1a, 1b... are produced on the both planes of a printed board 1, and spiral conductive patterns are formed on the sections 1a, 1b.... Conductive patterns are formed on the sections 1a, 1b... on one plane, and conductive patterns are formed on the sections 1a, 1b... on the other plane. Holes 5a-12a are through hole processed, the printed boards 11-15 are laminated and are integrated. The conductive patterns of the printed boards are connected, and an initial side coil and a secondary side coil are formed for each section. Then, a hole 23 is provided, a laminate is produced by cutting and separating each section, and ferrite cores 32 and 33 are incorporated into each laminate.</p> |
