| 摘要 |
<p>PURPOSE:To reduce noises by a method wherein when the electromagnetic device is composed of one T type iron core and two L type iron cores laid along both sides of the T type iron core, a leakage iron core formed of iron core plates to which a nonmagnetic paint films are coated on both sides respectively is fitted between the center of the L type iron cores and the T type iron core. CONSTITUTION:The iron core of the electromagnetic device used for a discharge lamp stabilizer is composed of the one T type iron core 10 and the two L type iron cores 15, 16 coupled along both sides of the core 10. In this construction, the laminated leakage iron core 25 consisting of the iron core plates 23 of which both sides are applied with a baking finish 24 of melamine or the like is inserted between the center of the iron cores 15, 16 and the core 10, and a primary winding 13 and a secondary winding 14 are wound and housed in the spaces on both sides of the core 25. In such a structure, an operating efficiency is improved, noises can be reduced and variation of each device will be decreased without using the nonmagnetic substance for preparing the space.</p> |
