Starter electric leakage detection hunting circuit

The invention belongs to the technical field of coal mine detecting circuits, and particularly relates to a starter electric leakage detection hunting circuit. According to the starter electric leakage detection hunting circuit, downhole accidents caused by starter electric leakage are avoided, and operation safety is guaranteed. According to the technical scheme, the starter electric leakage detection hunting circuit is formed by a main circuit, a signal detecting circuit and a rectifying circuit, and the main circuit is formed by an isolation phase-change switch HGK, a fuse RF, a vacuum contactor KM and electrical loading equipment M. The rectifying circuit is formed by a diode D1, a diode D2, a diode D3 and a diode D4, and the signal detecting circuit is formed by a transformer T, an adjustable resistor R8, a resistor R9, a resistor R20, a virtual grounding resistor Rw, a virtual grounding resistor Ru, a virtual grounding resistor Rv, a capacitor C10, a capacitor C 11, a capacitor C14, a capacitor C15, a voltage-regulator diode DW, a three-terminal regulator, the vacuum contactor KM and an electric leakage detecting relay KJ.