| 摘要 |
PURPOSE:To provide a surge current suppression circuit which can suppress the surge current from the main unit to the circuit on the terminal side to a constant current value without causing problems such as voltage drops in the terminal side circuit. CONSTITUTION:The voltage sensor part of the switching device 20 is connected in parallel with the terminal side circuit 30 having an electronic circuit and an electrolytic capacitor connected in parallel. In addition, a constant current circuit 10 is connected in series with the terminal side circuit 30, and the switching output of the switching device 20 is connected in parallel with the constant current circuit 10. At the time of connecting the terminal side circuit 30 to the main unit, the surge current flowing from main unit to the terminal side circuit 30 is suppressed to a constant value by the constant current circuit 10. When the load side voltage Vo in the terminal side circuit 30 rises to some extent, the switching output goes ON and shorts the constant current circuit 10. |
