irrigation motor automatic protector (1)

Published:2011/7/20 0:30:00 Author:chopper | Keyword: irrigation motor, automatic protector | From:SeekIC

The principle of circuitThe irrigation motor automatic protector circuit is formed by the power supply circuit and the detection/protection control circuit, which is shown in Figure 4-96. 　 Power supply circuit is formed by the power transformer T, rectifier diodes VD1-VD4 and filter capacitor C1. Detection/protection control circuit is formed by the detection electrodes A,B,start button S,resistors R1-R4, capacitor C2, optical coupler VLC, bi-directional trigger diode V, thyristor VT, electronic switch integrated circuit IC and AC contactor KM.



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