FIELD: electricity.
SUBSTANCE: controller of smooth start comprising a series circuit of the symistor and the load connected to the terminals, driver signal soft start and stop, consisting of a RC-chain comparator amplifier, a voltage source with a form of unipolar pulses generated from the line voltage sine wave rectifier bridge and galvanic separation on optosymistor the invention RC-chain operate with a time constant of 3.2 s, and the signal from the mains supply is formed with a delay of 7.2 ms inclusion T-wave rectifier reverse polarity with each successive portion a voltage characteristic which coincides with the absolute value of the charge voltage and discharge RC-chain.
EFFECT: increasing the durability of the pump by reducing the starting current and mechanical loads to nominal values, reducing the cost of creating a water supply system, increasing its durability due to the exclusion of a hydraulic shock.
1 dwg
