NON-CONTACT POWER TRANSMISSION DEVICE DRIVE METHOD AND NON-CONTACT POWER TRANSMISSION DEVICE

A primary coil (L1) is excited by selectively using: a first resonance frequency (AL) near a frequency determined by the primary coil (L1) and a primary-side capacitor(C), said primary coil (L1) being placed in a power-supply area (AR); and a second resonance frequency (BL) near a frequency determined by a secondary-side inductance component and a secondary-side capacitance component, said components existing when the primary coil (L1) faces a secondary coil (L2).