Patent ID: 8907645

Claim:
A safe electric power regulating circuit, connected between a power supply and a voltage boost/buck circuit, to regulate the output voltage by the power supply to have a target voltage through the voltage boost/buck circuit, the safe electric power regulating circuit comprising: a switch unit having a first end, a second end and a third end, wherein the first end is connected to the power supply, the second end is connected to the voltage boost/buck circuit, and the switching unit is controlled to connect the third end to the first end or the second end; a first diode having a first end connected to the first end of the switch unit; and a first capacitor having one end connected to the third end of the switch unit and the other end connected to circuit ground; wherein the voltage boost/buck circuit comprises: an application unit for performing application procedure based on the target voltage; a second diode having a first end connected to the second end of the switch unit and a second end connected to the application unit; and a second inductor having one end connected to the second end of the switch unit and the first end of the second diode, and the other end connected to circuit ground.