| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a self-excited non-contact power transmission device capable of stabilizing an oscillation state of a self-excited oscillation circuit even when a magnetic material is used for improving a coupling coefficient. <P>SOLUTION: The present invention includes a power transmission coil 11 and a feedback coil 15 for self oscillation. There is disposed a magnetic material 13 formed with a hole 14 in a surface on an opposite side to a surface facing a reception coil 41 of the power transmission coil 11. The feedback coil 15 is disposed in the hole 14. Thus, a change in the self inductance of the feedback coil 15 is suppressed, thereby stabilizing self-oscillation operations. <P>COPYRIGHT: (C)2012,JPO&INPIT |
