DRIVER

A driver is configured to supply drive power to a motor including an extraction unit configured to extract a portion of power supplied from outside and a supply unit configured to supply the power extracted by the extraction unit to an external device, or to a motor power line including the extraction unit and the supply unit. The driver includes a determination unit configured to determine, on the basis of an operating state of the motor, whether adjustment of a d-axis current value of a drive current of the motor is necessary to supply first power to the external device via the extraction unit, and an output unit configured to output, on the basis of a determination result by the determination unit, predetermined power including drive power required for driving the motor and the first power to the extraction unit.