Protective automatic irrigation control system based on voltage compensation circuit
A voltage compensation, automatic irrigation technology, applied in general control systems, control/regulation systems, program control, etc., can solve problems such as low control accuracy, and achieve the effects of compensating voltage drop, stable working voltage, and low malfunction rate
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[0020] Such as figure 1 As shown, the present invention is mainly composed of control chip U3, diode D2, detection probe Q1, detection probe Q2, resistance R2 connected in series between the P poles of detection probe Q1 and diode D2, and connected to the VIN pin of control chip U3 The protection circuit, the resistance R1 connected in series between the detection probe Q1 and the protection circuit, the N pole connected to the detection probe Q1, the diode D1 connected to the P pole with the TON pin of the control chip U3, and the positive pole connected to the TON pin of the control chip U3 The BOOT pin is connected, the capacitor C4 whose negative pole is connected to the LX pin of the control chip U3, the resistor R3 connected in series between the NC pin and the GND pin of the control chip U3, and the N pole of the diode D2 connected A voltage compensation circuit, a power circuit connected to the voltage compensation circuit, and a switch circuit connected in series betw...
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