Abstract: A primary inductive path to which a high-frequency current is supplied from a power supply is laid along a guide rail for carrying car bodies and secondary electric power receiving circuit for receiving electric power from the primary inductive path in a contactless mode are disposed in the car bodies. Inductance in the primary inductive path is adjusted by disposing, in the power supply, a dummy inductor which is composed by overlapping a plurality of planar ferrite cores with gaps reserved so as to form a plurality of ferrite blocks and combining these ferrite blocks so as to form at centers thereof a run-through slot for passing the primary inductive path.