Dual-power supply circuit

The utility model provides a dual-power supply circuit, which relates to the technical field of power equipment, solves the technical problem of how to ensure the normal operation of the circuit, and comprises a power supply, a load, a controller, a current mutual inductance unit, a current source power supply circuit and a voltage source power supply circuit, the current mutual inductance unit is connected with the current source power supply circuit, the current mutual inductance unit supplies power to a load through the current source power supply circuit when the voltage source power supply circuit breaks down, and the current source power supply circuit is used for converting current collected by the current mutual inductance unit into voltage to supply power to the controller when a fault occurs between the voltage source power supply circuit and the controller. The current source power supply circuit is added, so that the load and the controller can keep running when the power supply is abnormal, and t