Load power supply circuit

The invention discloses a load power supply circuit. The circuit comprises a power supply, a load and a first branch, wherein the first end of the power supply is connected with the first end of the load, the second end of the load is connected with the first end of the first branch circuit, and the second end of the first branch circuit is connected with the second end of the power supply; wherein the load comprises a capacitor, and the first branch comprises a first switch and at least one positive temperature coefficient PTC resistor; when the first switch is in a switch-on state, the second switch is in a switch-off state; wherein the power supply, the first branch circuit and the load form a first loop, the power supply charges a capacitor in the load through the first branch circuitto enable the voltage at the two ends of the capacitor to reach a set voltage threshold value, and the at least one PTC resistor in the first branch circuit is used for limiting the current of the first loop. 本申请公开了一种负载供电电路，所