Energy-saving controller of electromagnetic valve
A solenoid valve and controller technology, applied in valve details, valve operation/release devices, valve devices, etc., can solve problems such as energy waste and power consumption, and achieve the effect of extending service life, protection and energy saving.
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[0015] As shown in the figure, with diode D 1 -D 4 The input voltage is bridge rectified, and then through the capacitor C 1 The input peak DC voltage obtained after filtering (to ensure sufficient electromagnetic suction in the early stage of the solenoid valve closing), the power supply is controlled by the resistor R 1 shunt, Zener diode D 5 regulator, capacitor C 2 After filtering, it is used by PWM chip UC3842 and start-up delay circuit. Capacitance C 3 , resistor R 2 , Transistor Q 3 Form a start-up delay circuit to ensure that the solenoid valve has sufficient electromagnetic suction when it starts. After the set delay time, the PWM chip UC3842 automatically enters the energy-saving state (according to the model of the solenoid valve, adjust R 7 , so that the voltage across the solenoid valve coil can be stabilized at an appropriate value). Change the resistor R 10 and capacitance C 5 , can change the oscillation frequency of the PWM chip UC3842. Adjust resis...
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