POWER TRANSMISSION SYSTEM, AND POWER SUPPLY DEVICE AND PORTABLE APPARATUS THEREFOR

摘要

PROBLEM TO BE SOLVED: To provide a power transmission system capable of attaining miniaturization of a coil on a power reception side while maintaining capability of transmitting electric power, and to provide a power supply device and a portable apparatus therefor.

SOLUTION: The power transmission system 1 comprises a charging station (a power supply device) 2 that supplies electric power and a mobile phone (a power reception device) 3 that receives supply of the electric power. The charging station 2 includes a flat plate-like coil (a first coil) 21 and a magnet 22 disposed on an inside-diameter portion of the coil 21. The mobile phone 3 has a spiral inductor (a second coil) 31 whose outside diameter is substantially the same as or smaller than an inside diameter of the coil 21. The spiral inductor 31 is constituted of a soft magnetic substance layer 31a and a coil conductor 31b.

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