Power supply circuit and power supply equipment

The invention relates to the field of electronic circuits, and discloses a power supply circuit and power supply equipment. The power supply circuit comprises an energy storage inductor, a first switch tube, a second switch tube, a current transformer and a sampling processing circuit, wherein the current transformer comprises a first primary winding, a second primary winding and a secondary winding, the first primary winding and the first switch tube are connected in series to form a first current loop of the energy storage inductor, the second primary winding and the second switching tube are connected in series to form a second current loop of the energy storage inductor, the first current flowing through the first primary winding and the second current flowing through the second primary winding are alternately carried out in a preset switching period so as to realize the magnetic flux resetting of the current transformer, and the sampling processing circuit obtains information of the first current flowing through the first primary winding and information of the second current flowing through the second primary winding through the secondary winding. Therefore, through the mode, the working reliability of the system can be ensured without adding an additional reset circuit, and meanwhile, the precision of the sampling current can be improved.