POWER SUPPLY SYSTEM AND SWITCHING CIRCUIT

Provided is a power supply system that can increase a power supplied by a whole of the system that supplies a power to a target apparatus. The power supply system comprises a plurality of DC power sources including an environmental-power-generation apparatus and a power-reception apparatus for wireless power transfer, and a switching circuit. The switching circuit has a plurality of input sections to which the plurality of the DC power sources are connected, and a plurality of output sections that output DC powers to a plurality of power-supply targets, and switches connection states between the plurality of the input sections and the plurality of the output sections. One or plural power-reception apparatuses for wireless power transfer and one or plural environmental-power-generation apparatuses may be included. The plurality of the DC power sources may include one or plural photovoltaic-power-generation apparatuses. The environmental-power-generation apparatus may be at least one of a thermal-power generation apparatus, a vibration-power generation apparatus and a radio-wave power generation apparatus.