Electronic voltage regulator of two -wire system

The utility model discloses an electronic voltage regulator of two -wire system, by voltage regulator body, pressure regulating piece, direct current motor, last limit switch, lower limit switch, first diode, the 2nd diode cluster one -tenth, its characterized in that: the pressure regulating piece is established on the voltage regulator body, and by the direct current motor drive, upper and lower limit switch locates the upper and lower extreme position of pressure regulating piece pivoted respectively, go up the first outside wiring end of limit switch second wiring end conduct, and connect in parallel with second diode negative pole, it is anodal parallelly connected with the second diode to go up the first wiring end of limit switch, inserts the first power end of direct current motor, the lower first wiring of limit switch end is held as outside wiring of second, and parallelly connected with first diode negative pole, limit switch second wiring end is anodal parallelly connected with first diode down, inserts direct current motor second source end, upper and lower limit switch is the normal close formula. The utility model discloses, have simple structure, small in quantity, the characteristics such as the reliability is high, low cost of wiring, can the volume of alleviateing the installation work, reduce PLCIO interface use amount, improve system stability, reduce cost.