| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a trigger coil having a structure which does not obstruct mounting work to a circuit substrate without increasing a component cost. <P>SOLUTION: A trigger coil is provided with a first separator 16 projecting out from an outer peripheral surface of a core portion 19 only by first height, and a second separator 17 projecting out from the outer peripheral surface of the core portion 19 only by second height higher than the first height, and having a flat portion on at least a part of the outer peripheral surface. A secondary winding portion 21 is formed in each of plural sections defined on the outer peripheral surface of the core portion 19 by the first separator 16 and the second separator 17. The secondary winding portion 21 formed in the section defined by the first separator 16 is covered by a first insulation member 22. A primary winding portion 23 is formed on the first insulation member 22 so as to make the outer peripheral surface thereof flush with the flat portion on the outer peripheral surface of the second separator. A second insulation member 24 is provided so as to cover the outer peripheral surface of the primary winding portion 23 and the outer peripheral surface of the second separator 17. <P>COPYRIGHT: (C)2012,JPO&INPIT |
