| 摘要 |
PURPOSE:To obtain a printed coil with uniform thickness and perfect continuity between coil patterns by a method wherein two coil patterns are arranged facing each other on two printed circuit boards and each coil pattern is electrically conducted and bonded each other through a bonding means. CONSTITUTION:Coil patterns 15-18 in which connection patterns 19-22 are provided are formed on one side of the 1st and the 2nd printed circuit boards 11, 12. Two circuit boards 11, 12 are so arranged that each coil pattern 15-18 is facing each other and is connected electrically by the connecting patterns 19- 22. Two circuit boards 11, 12 are adhered to each other except at least at the part of the connection patterns 19-22 by bonding means. For instance, above mentioned coil patterns 15, 17 and 16, 18 are made to have opposite directions in winding and are so arranged that the directions of the currents on the sides facing to each other are made to coincide mutually. As above adhesive means for instance, a two-side adhesive tape is preferably used. |
