| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a coil component securely eliminating an unnecessary noise. <P>SOLUTION: A composite conductor 2 is formed to have a toroidal coil shape circulating around the magnetic path of a soft magnetic core 1. The coil of the composite conductor 2 and winding 7 are wound in a mutually opposite direction along the magnetic path of the soft magnetic core 1. An electrostatic capacitance C is generated between the coil of the composite conductor 2 and the winding 7. By the control of the potential of a first terminal 41 to be opposite to the time change of the potential of the winding end portion 71, there is a displacement current flow produced by the electrostatic capacitance C between the coil of the composite conductor 2 and the winding 7, so that a current change that flows from the winding end portion 71 to a winding end portion 72 can be suppressed. <P>COPYRIGHT: (C)2012,JPO&INPIT |
