| 摘要 |
An electric power supply device (1) for supplying electric power to an electric power-receiving device using an electromagnetic field resonant coupling is provided with an inverter (13) for converting inputted direct-current voltage to alternating-current voltage and an (LC) serial resonance circuit (14) which is connected to the output side of the inverter (13) and has the same resonance frequency as an external resonance circuit provided with an electric power-receiving device. In the LC serial resonance circuit (14), a plurality of inductance components (L1 to L5) and a plurality of capacitors (C1 to C5) are alternatingly connected to each other in series. An electric power supply device that does not reduce the electric power supply efficiency is thereby provided. |
