| 摘要 |
<p>PROBLEM TO BE SOLVED: To obtain an electromagnetic device which is capable of improving power efficiency, while surely maintaining lamination state of a core plate. SOLUTION: An electric discharge lamp stabilizer has a core structure body 26 formed of a side leg core 41, formed by laminating a plurality of core plates 41a, 42a and holding lamination state thereof and a central leg core 42, a coil 25 which is formed by winding conductors 29, 30 on coil bobbins 27, 28 and is fit to the core 42. Laminated core plates are bonded mutually by adhesives 45, 46 which are extended and provided in a thickness direction of the cores 41, 42, and laminated state of the core plates 41a, 42a is maintained. A material which causes little punching strain which becomes magnetic path resistance of a core structure body 26 can be adopted for each of core plates 41a, 42a and laminated state of the core plates 41a, 42a can be kept without providing the cores 41, 42 with a welding trace which turns into an eddy current path which flows over the entire central leg core 42 during energization.</p> |
