| 摘要 |
PROBLEM TO BE SOLVED: To provide an overvoltage protection circuit capable of accelerating an overvoltage protection operation.SOLUTION: The overvoltage protection circuit 10, used to protect a capacitor 31 from an overvoltage, includes: a resistor 2; an IGBT 3 connected in series to the resistor 2; and an active clamp circuit 4 provided at the IGBT 3, and detects an operation of the active clamp circuit 4 and turns on the IGBT 3. |
