| 摘要 |
<p>A method for increasing a power transmission efficiency from the primary coil side to the secondary coil side in a power transmitter which is so structured that power may be transmitted between a primary coil and a secondary coil. A resonance frequency of the secondary coil side is set higher than a frequency of an oscillation signal at the primary coil side, and thereby a capacitance can be made small and a coupling coefficient between the primary coil and the secondary coil can be made apparently high. By this method, the power transmission efficiency from the primary coil side to the secondary coil side can be increased.</p> |
