| 摘要 |
A power transfer apparatus including a first device and a second device having a first coil and a second coil, respectively, is provided. The first device is configured to produce primary power through the primary coil upon being supplied with external power and to be controlled by a provided control signal so that the primary power decreases and increases upon the control signal representing a first value and a second value, respectively. The second device is configured to be joined with the first device so that the secondary coil is electromagnetically coupled with the primary coil. The second device is configured to produce secondary power upon the secondary coil being driven through the electromagnetic coupling. The second device is configured to provide the first device with the control signal representing the first value and the second value upon the secondary power being greater and smaller than a reference value, respectively.
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