NON-CONTACT POWER SUPPLY DEVICE

A power transmission device in a non-contact power supply device has: a transmission coil that supplies power to a power reception device ; and a power supply circuit that supplies AC voltage having a switching frequency at which the transmission coil does not resonate, to the transmission coil . A power reception device has: a resonance circuit having a reception coil that receives power from the power transmission device and a resonance capacitor connected in parallel to the reception coil ; a rectification circuit that rectifies power output from the resonance circuit ; and a coil connected in series to the reception coil , between the resonance circuit and the rectification circuit