| 摘要 |
PROBLEM TO BE SOLVED: To provide a power circuit that can continuously output stable voltage to loads mounted on an idling stop vehicle.SOLUTION: A power circuit 1 is configured by including a booster circuit 4, a switch 14 connected to the booster circuit 4 in parallel, a current detection circuit 18 for detecting current flowing through the switch 14, and a control circuit 13 for determining whether or not the switch 14 has an open fault based on the current detected by the current detection circuit 18 at a start of an engine or during a normal state other than a restart of the engine after an idling stop, and causes a display 20 or a speaker 21 to output information indicating that the switch 14 has an open fault. |
