| 摘要 |
PROBLEM TO BE SOLVED: To provide a common mode choke coil with a high coupling degree between wirings and with less leakage magnetic flux. SOLUTION: In a coil bobbin 3, brims 5 are arranged at both ends and a center of a cylindrical drum part and a part between the ends and the center. The bobbin 3 has a structure divided into two. The coil bobbin 3 is engaged into a magnetic path of a square or elliptic closed magnetic path magnetic core 100. Division windings 1a, 1b, 1c and 1d are given to respective winding frames 5a, 5b, 5c and 5d. The choke coil is provided with a seating 2 for storing the closed magnetic path magnetic core 100 and the coil bobbins 3 and a terminal for connecting division windings 1a, 1b, 1c and 1d. Connection conductors 200 and 300 for connecting division windings 1a, 1b, 1c and 1d in series are arranged inside the seating 2. COPYRIGHT: (C)2007,JPO&INPIT
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