POWER SUPPLY SWITCHING CIRCUIT

摘要

PROBLEM TO BE SOLVED: To provide a power supply switching circuit capable of ensuring a required time for backup work after shutdown of a power supply while suppressing an inrush current generated upon starting supply of the power supply.SOLUTION: The power supply switching circuit includes a plurality of switching circuits with different time constants connected in series between a power supply unit for supplying electric power and a load circuit driven by electric power supplied from the power supply unit, and a control section for controlling the plurality of switching circuits on the basis of electric power supplied from the power supply unit.