Uninterrupted power supply (UPS) circuit capable of switching modes

The utility model discloses a UPS power supply circuit capable of switching modes, which comprises an energy storage device, a voltage regulating resistor, a voltage regulating switch device, a controller, a manual gear knob and a control panel, the voltage regulating resistor is electrically connected with the energy storage device, and the energy storage device, the voltage regulating resistor and the voltage regulating switch device are electrically connected in sequence. The controller is in signal connection with the voltage regulation switch device to control the voltage regulation switch device, the manual gear knob is in signal connection with the switch device to control the voltage regulation switch device, the control panel is used for controlling the voltage regulation switch device to be controlled by the manual gear knob or the controller, and the manual gear knob and the controller are both connected with the control panel. The UPS circuit capable of switching the modes has the advantages of be