Power feeder for solar cell and solar cell system

摘要

A power feeding apparatus (14) for solar cells has: a voltage regulator (30), i.e., a voltage adj usting unit; a relay (34), i.e., a switch unit; and a control unit (36). The voltage regulator (30) executes voltage adjustment with respect to an input voltage, and outputs, to a power output terminal (20), a voltage adjusted to a previously set voltage or lower. The relay (34) is provided on a bypass line (32) that is connected between a power input terminal (18) and the power output terminal (20) without having the voltage regulator (30) therebetween, and the relay performs switching such that the bypass line (32) is connected or interrupted. In the cases where the input voltage is equal to or lower than the predetermined voltage, the control unit (36) performs control such that the bypass line (32) is connected by means of the relay (34), and the input voltage is outputted from the power output terminal (20).