Camera of under -voltage detection

The utility model discloses a camera of under -voltage detection, including rectifier circuit, voltage stabilizing circuit, voltage stabilizing circuit is used for providing the operating voltage of camera, voltage stabilizing circuit's output still has been coupled a mutual -inductor for gather voltage stabilizing circuit's power supply electric current size, the mutual -inductor is coupled in an under -voltage detection circuitry, works as when voltage stabilizing circuit's power supply electric current is less than first default, under -voltage detection circuitry exports executive signal, still include a battery and the switch element who establishes ties and set up, switch element is controlled by the executive signal closure, works as when switch element is closed, the battery is parallelly connected with voltage stabilizing circuit. When the electric current that detects was less than the threshold value, output executive signal, control warning circuit reported an emergency and asked for help or increased vigilance in order reminding the user voltage abnormity condition, if and abnormal conditions are replied, just so control report an emergency and ask for help or increased vigilance the module and reset the stop work and keep original function.