This paper introduces a circuit diagram of a water dispenser with intelligent power-saving function. The water dispenser overcomes the heating and heat preservation state of the ordinary household water dispenser after the heating power is turned on, and the pure water in the heating tank is repeatedly heated for a long time. Not only is it not good for health but also has the disadvantage of being very power-consuming. Using the microwave induction principle, the water dispenser can automatically detect the presence or absence of personnel activities in the room, and at the same time judge whether the personnel in the room only pass briefly, and then automatically control the heating function so that the water dispenser has Intelligent and power saving features. The newly added components in the figure below have a typical capacitor step-down circuit consisting of Cl, C2, Rl, DW, and D, providing a stable llV DC voltage to the TX982 and 555 time base circuits. The TX982 is a microwave induction controller. The microprocessor contains a microwave Doppler effect to establish a micro electric field in a certain space. When a person or a moving object enters an electric field, it will reflect the echo, and after the electronic line is mixed, the pole is detected. A weak frequency shift signal, which is intelligently processed to output a control signal. The effective monitoring radius of the TX982 is 1~7 meters. The reason why the pyroelectric sensor is not used here is mainly because the modification is convenient, and the pyroelectric sensor is particularly sensitive to the heat source and is easy to malfunction. The microwave induction controller can be detected by installing it behind the plastic panel of the water dispenser without damaging the appearance of the water dispenser. The output of the TX982 uses an open-collector output. When the microwave circuit detects that someone is moving within the monitoring range, the internal transistor is turned on for 10 seconds to discharge the charge on C3. The 555 circuit constitutes a one-shot delay circuit. When the second pin is lower than 1/3 of the power supply voltage, the third pin outputs a high level, the relay pulls in, the Kl turns on the heater for heating, and the delay time composed of R2 and C3 For 3 minutes, the delay time is set to be relatively short. If the personnel only passes briefly, the water dispenser will automatically stop after heating for 3 minutes. If there is someone in the room, the TX982 will trigger the one-shot circuit multiple times within the delay time. Work, the water dispenser will continue to heat until the set temperature is reached. The high-current slip ring is specially developed for high-power equipment. It can choose 50A, 100A, 250A, 500A, 1500A, 3000A and other specifications. It can also combine current and signal, which is easy to install, light weight and large current load. It is very suitable for welding, electroplating and other industries. High Current Slip Ring,Encoder Servo Motor,Connector Electrical,Rotating Electrical Connectors Dongguan Oubaibo Technology Co., Ltd. , https://www.sliprob.com