Power conversion circuit

The utility model discloses a power supply conversion circuit, which comprises a pre-processing circuit and a post-conversion circuit, the pre-processing circuit comprises an over-current protection unit, a reverse connection protection unit, an overvoltage protection unit, a common mode filtering unit, a voltage stabilization unit and an over-temperature indication unit, one end of the over-current protection unit serves as an input end to be connected with a power supply, and the other end of the over-current protection unit serves as an output end to be connected with a power supply. And the other end of the overcurrent protection unit is connected with the rear conversion circuit through the reverse connection protection unit, the overvoltage protection unit, the common-mode filtering unit, the voltage stabilization unit and the over-temperature indication unit in sequence. The utility model has the advantages of simple structure, good protection effect and good stability. 本实用新型公开了一种电源转换电路，包括前置处理电路和后置转换电路