Three-phase AC constant phase sequence controller circuit diagram

Published:2011/8/15 21:40:00 Author:Ecco | Keyword: Three-phase AC , constant phase sequence , controller | From:SeekIC

The three-phase AC constant phase sequence controller circuit is composed of the power supply circuit, phase detection circuit and control circuit, and it is shown as the chart. Power supply circuit consists of the power transformer T, bridge rectifier UR, resistor M, regulator diode VS4 and filter capacitor C. Phase sequence detection circuit consists of the rectifier diodes YD1 ~ VD3, current-limiting resistors R1 ~ R3, zener diodes VS1 ~ VS3 and Schmitt trigger NAND gate integrated circuit IC1 internal D1 ~ D3. The control circuit is composed of the JK flip-flop IC IC2, resistor R5, transistor V, diode VD4, relay K and AC contactors KM1, KM2.



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