Load open circuit protection circuit

The utility model discloses a load open circuit protection circuit, comprising a sampling module which is connected with a power supply voltage and is used for outputting a first sampling voltage when a load is connected or outputting a second sampling voltage when the load is in an open circuit; the protection module is connected with the sampling module and is used for outputting a first control signal according to the first sampling voltage or outputting a second control signal according to the second sampling voltage; wherein the second control signal is used for controlling the test equipment to stop working. According to the utility model, the test equipment is controlled to work normally when the load is connected, and the test equipment is controlled to be disconnected and stop working when the load is open, so that a positive feedback process is formed, and the hot plug phenomenon caused by the fact that the test equipment continues to work after the load is disconnected is avoided; and real-time rap