| 摘要 |
PROBLEM TO BE SOLVED: To provide a non-contact charger that can make it difficult to apply high voltage to an element of a series resonant circuit, for example, when a resonant frequency is shifted in order for radio wave interference measures.SOLUTION: A non-contact charger 1 switches the resonant frequency of an LC series resonant circuit 5 when it detects that a radio wave gets into a radio or the like as noise at the time of transmission of the radio wave. At the time, a charger controller 4 rests its main power supply to turn off the power supply of the non-contact charger 1 once. After power-on operation again, the charger controller 4 switches the resonant frequency of the LC series resonant circuit 5 by turning off a change-over switch 14, controls a switch part 6 to change the working frequency of the LC series resonant circuit 5 from an initial value (for example, 175 kHz) of frequency setting after power-on, and sets it to a frequency required by a product to be charged. |
