| 摘要 |
<p>PURPOSE:To implement a compact configuration and high performance, by a constitution wherein slit grooves, which are formed in the outer surface and the inner surface of a center core between an inner core and an outer core, are not aligned on one straight line in the direction of the diameter. CONSTITUTION:Circumferential grooves 204 are formed in the inner surface and the outer surface of a cylindrical ferrite center core 2. Circumferential grooves are formed in the inner surface of an outer core 3. The outer core 3 is arranged at the outside of the center core 2 with a specified gap in-between. Circumferential grooves are formed in the outer surface of an inner core 4. The inner core 4 is arranged at the inside of the center core 2 with a specified gap in-between. Each slit groove 202 which is formed in the inner surface of the center core 2 is not aligned with each slit groove 203 which is formed in the outer surface on one straight line in the direction of a diameter at the thickness of the core. In this way, the strength of the core and a magnetic path in some extent can be secured, and the compact configuration and the high performance can be implemented.</p> |
