| 摘要 |
PROBLEM TO BE SOLVED: To provide a noncontact power transmitter minimizing the burden of a receiver upon recharging a secondary battery after being fully charged. SOLUTION: This noncontact power transmitter constructed from a transmitter 1 and the receiver 2, transmits power from the transmitter 1 to the receiver 2 by electromagnetically connecting a primary coil 16 with a secondary coil 21. When the secondary battery 26 is recharged after being fully charged, the transmitter 1 drives the primary coil 16 at every predetermined timing and detects current flowing in the primary coil 16 after a lapse of the predetermined timing from the drive starting of the primary coil 16, and performs a following driving operation on the primary coil 16, based on the detected current. COPYRIGHT: (C)2009,JPO&INPIT
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