| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To absorb electromagnetic waves generated from a primary coil and a secondary coil for preventing the waves from leaking outside by forming iron core powder, metallurgic powder or the like. <P>SOLUTION: A center core and a coating core are assembled respectively into spherical forms by mixing resin into a powdered magnetic material and hardening in a plurality of molds, and a closed magnetic path is formed between the center core and the coating core. The center core and the coating core cover a bobbin with the primary coil and the secondary coil wound around, and the cores are grounded, thereby improving the shielding effects against the electromagnetic waves generated from the primary and secondary coils. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
