Patent ID: 8406024

Claim:
A power conversion circuit converting DC electric power of a DC power supply into AC electric power to send the AC power to an inductive load, comprising: a first switching device connected to a positive pole of the DC power supply to exhibit a conductive state and a current interrupting state; a second switching device connected to a negative pole of the DC power supply to exhibit a conductive state and a current interrupting state; a first inductor provided between the first switching device and the inductive load; a second inductor provided between the second switching device and the inductive load; and a clamping diode connected between a first connection point which connects the first switching device and the first inductor, and a second connection point which connects the second switching device and the second inductor, so that conduction is provided in a direction from the second connection point to the first connection point, wherein the clamping diode comprises a pair of diodes connected in series, a first capacitor is connected between a connection point of the pair of diodes and the positive pole of the DC power supply, and a second capacitor is connected between the negative pole of the DC power supply and the connection point of the pair of diodes.