POWER SUPPLY CIRCUIT

摘要

A power supply circuit for providing over-voltage protection includes a power supply unit and an output. The power supply unit includes a power input control terminal and a power output terminal. The power output terminal configured for connection to the output for supplying power to a load connected to the output. The power supply circuit includes an over-voltage response unit for connection to the output, and a control unit. The control unit is connected between the over-voltage response unit and the power input control terminal. The over-voltage response unit is configured for turning on the control unit. The control unit is configured for transmitting a control signal to the power supply unit to control the power supply unit to stop outputting power when it is turned on.