| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a common mode noise filter capable of attenuating a common mode noise significantly. <P>SOLUTION: A common mode noise filter has: first to fourth coil conductors 11-14; a first connection conductor 15 connecting the first coil conductor 11 and the second coil conductor 12; and a second connection conductor 16 connecting the third coil conductor 13 and the fourth coil conductor 14. The first coil conductor 11 and the third coil conductor 13 constitute a first filter 23. The second coil conductor 12 and the fourth coil conductor 14 constitute a second filter 24. The length of the first connection conductor 15 and that of the second connection conductor 16 are substantially the same. The lengths of the first and second connection conductors 15 and 16 are defined so that a phase of a specific frequency of a common mode current can be changed by a phase amount more than 0 degree and equal to or less than 90 degrees. <P>COPYRIGHT: (C)2012,JPO&INPIT |
