| 摘要 |
An electric power supply device is provided that includes an electric power supply portion, an information communication portion, a control portion, and an impedance measurement portion. The electric power supply portion supplies, to another device with which an agreement has been established to supply electric power, the electric power that the agreement specifies, by supplying the electric power to a bus line during predetermined electric power supply intervals that recur cyclically. The information communication portion wirelessly transmits and receives, to and from the other device to which the electric power supply portion supplies the electric power, information signals that express information. The control portion controls the electric power that the electric power supply portion supplies and the information signals that the information communication portion transmits. The impedance measurement portion measures the impedance of the bus line on a specified cycle.
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