| 摘要 |
PROBLEM TO BE SOLVED: To provide a power receiver and a charging system capable of appropriately supplying power to a load.SOLUTION: The power receiver comprises a rectifying unit connected to an output side of a secondary resonance coil that receives electric power from a primary side resonance coil by magnetic field resonance or electric field resonance, a DC-DC converter connected to the output side of the rectifying unit, an output terminal connected to the load, an impedance portion having an impedance larger than the impedance of the load, and a switching unit provided on the output side of the DC-DC converter and switchingly connecting the DC-DC converter and either the output terminal or the impedance unit. The switching unit connects the DC-DC converter and the impedance unit before the operation of the DC-DC converter rises, and connects the DC-DC converter and the output terminal after the rise.SELECTED DRAWING: Figure 4 |
