| 摘要 |
PROBLEM TO BE SOLVED: To provide a power supply device and a charger which perform transmission of a charging current value corresponding to a power signal transmitted during non-contact charging accurately and simply, and to provide a power supply method and a charging method.SOLUTION: The power supply device comprises: a phase shift unit for generating a first modulation signal by shifting the phase of a power signal; a first superposition signal or a second superposition signal by a first phase; a generation unit for separating a second modulation signal from a second superposition signal, determining whether or not the level of the second modulation signal thus separated falls within a determination range, and generating a generation signal indicating that the second modulation signal falls within a determination range; a measurement unit for measuring the time indicating within the determination range of the generation signal; and a control unit for acquiring the time thus measured, specifying the time within the determination range including the time thus measured, with reference to the charging current determination information where each time within the determination range is associated with the charging current value, and selecting the charging current value associated with the time within the determination range thus specified. |
