Patent ID: 8982675
Filing Date: 2015-03-17
Classification: G04C,G04G,H02J

Abstract:
1. A power supply unit comprising: a first power supply circuit that supplies a voltage to a load driving unit that drives a load unit; a second power supply circuit that supplies a voltage to circuits other than the load driving unit; a first switching unit that connects any one of a power supply that supplies a power supply voltage and a voltage step-down circuit that supplies a step-down voltage of the power supply voltage to the first power supply circuit; a second switching unit that connects any one of the power supply that supplies the power supply voltage and the voltage step-down circuit that supplies the step-down voltage of the power supply voltage to the second power supply circuit, the second switching unit being disposed in parallel to the first switching unit; and a control unit that controls the connection by the first switching unit and the connection by the second switching unit to switch the voltage supplied to the first power supply circuit and the voltage supplied to the second power supply circuit in accordance with properties of the load driving unit.