Take earth -leakage protector's of open -phase protection control circuit

The utility model discloses a take earth -leakage protector's of open -phase protection control circuit, including current transformer, control chip, switching diode D2, silicon controlled rectifier Q1, rectifier diode D1, trip coil, divider resistance R9, divider resistance R10 and switching diode D4. Current transformer set up anger, the zero line output, its secondary coil's output is connected with control chip's an input, control chip's an output passes through switching diode D2 to be connected with silicon controlled rectifier Q1's control electrode, silicon controlled rectifier Q1's positive pole and trip coil are connected, its negative pole is held with control chip's voltage negative pole and is connected, trip coil and take off mouthful mechanism's antithetical couplet is connected to in trip coil's the one end and output zero line after divider resistance R9 and the divider resistance R10 series connection. The utility model discloses a take earth -leakage protector's of open -phase protection co