| 摘要 |
PROBLEM TO BE SOLVED: To perform efficient charging even if the spatial dielectric constant between a power transmission side and a power reception side varies.SOLUTION: A control part (15) of a charging circuit (1) changes the value of variable impedance of an impedance adjustment part (12) in steps, sets, as a set value, a value of the variable impedance when a detection current value of a current detection part (14) obtained on each change becomes maximum, and controls the variable impedance so as to obtain the set value. |
