| 摘要 |
PROBLEM TO BE SOLVED: To provide a feed protection system power supply circuit that can be simply reset automatically, and at the same time generates only a small amount of heat. SOLUTION: An overcurrent detection part 17 detects that a current flowing to a load part is an overcurrent exceeding a specific level. A feed stop part 12 stops feeding electricity to the load part when the overcurrent is detected by the overcurrent detection part 17. A resistance measurement part 18 measures resistance at the side of the load with a small current or a low voltage after the feed to the load is stopped, controls the feed stop part 12 when the resistance at the side of the load reaches a specific value, and resetting the feed to the load. |
