| 摘要 |
<p>An electric power supply device (110) generates electric power having a prescribed frequency. An electric power transfer unit (130, 140, 150) receives electric power from the electric power supply device, and transfers electric power to an electric power receiving unit (210, 220, 230) in a contactless manner by resonating with the electric power receiving unit via an electromagnetic field. An electric power sensor (115) senses power reflected to the electric power supply device. A discharging coil unit (180, 185) externally discharges electric power output from the electric power supply device. A relay (190) electrically connects the discharging coil unit between the electric power supply device and the electric power transfer unit when the reflected power detected has a value exceeding a predetermined value.</p> |
