| 摘要 |
PROBLEM TO BE SOLVED: To provide a rush current suppression circuit capable of perfectly suppressing rush current even when power supply is restarted within a short time after the power supply is disconnected. SOLUTION: The rush current control circuit comprises two sets of series circuits consisting of thermistors 215 and 217 and switches 212 and 213 respectively inserted in a power supply side input circuit in a power unit 2, two sets of temperature detectors 214 and 216 detecting temperatures of respective thermistors, and a selector 211 outputting a switch-on signal 102 or 103 to a switch to which a thermistor having lower detected temperature is connected by comparing detected temperatures of the two sets of the temperature sensors when power-on signal 101 for commanding power-on outside is inputted. |
