Non-contact power feeding apparatus for implementing magnetic resonance method

In this non-contact power feeding apparatus 15, a power feeding side circuit 6 is provided with a power transmission coil 3 and a parallel capacitor 11 to provide a parallel resonance circuit, while a power receiving side circuit 7 is provided with a power receiving coil 4 and a parallel capacitor 12 to provide a parallel resonance circuit. Both parallel resonant circuits are set to have the same resonance frequency and a power frequency of a high-frequency power source 9 in the power feeding side circuit 6 is set to be the same as this resonance frequency. The power feeding side circuit 6 is provided in such a manner that a circuit section on the side of the high-frequency power source 9 and a circuit section on the side of the parallel capacitor 11 and the power transmission coil 3 are connected by the electric field coupling of the electric field coupling capacitors 21 and 21.