Overcurrent protection circuit with feedback

The invention discloses an overcurrent protection circuit with a feedback, and belongs to the field of automatic control. The protection circuit comprises a sampling circuit, a feedback circuit, a switching circuit, and an adjustment circuit. On end of a protection point is connected to the sampling circuit, the other end of the protection point is connected to the feedback circuit and the adjustment circuit, the sampling circuit is connected to the switching circuit, the switching circuit is connected to the adjustment circuit, and the adjustment circuit is connected to the feedback circuit. The sampling circuit conducts voltage sampling when the protection point is triggered by overcurrent. When a sampled voltage reaches a preset value, the switching circuit is conducted, the adjustment circuit is cut off, and the protection point is protected. The overcurrent protection circuit of the invention can form overcurrent protection and quick-breaking protection conveniently. A circuit is automatically cut off wh