| 摘要 |
PURPOSE:To remove the damage condition when a switch is closed by always charging a capacitor when the switch is closed. CONSTITUTION:Before a switch 21 is closed, a capacitor 26 is charged to the vicinity of a power source voltage in a circuit of a power source 17, a period setting resistor 20, a resistor 24, a resistor 25, the capacitor 26, a resistor 36 and the power source 17. When the switch 21 is closed at this time, a conduction trigger signal is flowed by the power source 17, a limiting resistor 19, a gate terminal 30, a cathode terminal 31, the switch 21, and a load 23, a GTO18 is conducted, and a current is flowed to the load. |
