Reverse connection protection circuit

The utility model discloses a reverse connection protection circuit which comprises an MOS tube VA, one end of the MOS tube VA is connected with an input end, the other end of the MOS tube VA is connected with an output end, the input end is sequentially connected with a diode VB and one end of a driving resistor RA, and the other end of the driving resistor RA is grounded through a driving resistor RB. The MOS tube is a P-type junction field effect transistor VA, the MOS tube is connected with a control circuit, the direct current power supply circuit is mainly applied to the field of direct current power supply, and the formed achievement is a common technology and can also be applied to other fields such as planes, vehicle-mounted equipment, electric tools and other places needing direct current power supply. Therefore, along with the technology transplantation, popularization and application of the project, good social and economic benefits can be brought to the development of the aircraft industry, vehic