Patent ID: 8687335

Claim:
An electronic circuit breaker of a power supply having dual output ports, comprising: an input port; two output ports; two field effect transistors, wherein a drain and a source of each field effect transistor are connected between the input port and one of the output ports, and a gate of each field effect transistor is connected to a DC bias circuit; two current detection circuits, each current detection circuit serially connected between the input port and one of the field effect transistors and having a current detection resistor and a signal conversion unit; and two control circuits, each control circuit connected to the signal conversion unit of one of the current detection circuits and one of the field effect transistors and having: a silicon controlled rectifier having an anode, a cathode and a gate, wherein the anode and the cathode of the silicon controlled rectifier are connected to one of the field effect transistors; and an activation circuit connected to one of the current detection circuits and one of the field effect transistors, wherein when detecting an abrupt current rise at a corresponding output with a corresponding current detection circuit, the activation circuit activates a corresponding silicon controlled rectifier to turn on so that a corresponding DC bias circuit does not supply a bias voltage to a corresponding field effect transistor so that the output port connected to the field effect transistor in an off state and stops outputting a DC power.