| 摘要 |
PROBLEM TO BE SOLVED: To make it possible to reduce the size of a power feeding device and charge a charger with high efficiency. SOLUTION: Feeding power from a generator 12 is provided to an oscillation power control circuit 16 through a power line 14. Charged power stored in a secondary battery 22 is fed to the oscillation power control circuit 16 through a second power line 26. In the oscillation power control circuit 16, the power with higher voltage is selected and fed to drive an oscillation circuit 18. At the same time, a clock signal is generated and fed to a boosting circuit 20. Then, the power from the generator 12 is boosted to charge the secondary battery 22. |
