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Anonymous users2024-02-11Leakage of the delay element (capacitor), if not a matter of parameter selection;
The resistance of the delay charging loop (resistor) becomes larger.
In a word. The capacitance component affects the delay time of the delay circuit.
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Anonymous users2024-02-10Power supply: You can buy a switching power supply, so as to save a little trouble. If you use a transformer, it's a little more troublesome. The switching power supply is generally 24V, and the current of the switching power supply is selected according to the size of your load, for example, the larger the current, the more expensive it sells.
Switching power supply 24V-5A** is about 100 yuan. Buy 2 more.
24v10a
8 feet and a time delay of more than 1 minute time relay, ** about 30 yuan. You can check the infrared sensor switch on the Internet to see what you want. It should not be less than 100 yuan.
As for the circuit connection, the text is not easy to express, first of all, the human body senses and then connects into a self-locking circuit, and then the time relay (1) is turned on, and the time relay (2) is turned on after a delay of 60 secondsThe solenoid valve is connected to the normally open contact of the time relay (1) and the normally closed contact of the time relay (2) (of course, there is also a flush time).It is impossible to flush all the time, and the flushing time is set by the time relay (2), and the time relay (1) and the self-locking circuit are disconnected after the normally open point time of the time relay (2) is reached.
It's enough to make a cycle.
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Anonymous users2024-02-09Scope of application of automatic human body infrared sensor switch This product is suitable for automatic lighting, ventilation and other purposes in corridors, corridors, warehouses, garages, basements, toilets and other places. It truly reflects the modernization of building intelligence and property management. Functional characteristics 1. Automatic control products based on infrared technology, when someone enters the switch sensing range, the special sensor detects the change of the infrared spectrum of the human body, and the switch automatically connects the load.
The person does not leave and is moving, and the switch is continuously turned on; After the person leaves, the switch will automatically turn off the load when the time is delayed, and the person will turn on the light and the person will leave the light, which is cordial and convenient, safe and energy-saving. 2. With zero-crossing detection function: non-contact electronic switch, prolonging the service life of the load.
3. Apply light-sensitive control, switch automatic metering, and do not sense when the light is strong. Installation and debugging 1. Because the left and right sides of the switch are larger than the upper and lower sides of the induction range, when installing the switch, the positive axis should be as perpendicular as possible to the direction of the person's walking channel, so as to achieve the best induction effect. 2. Power on after installing the switch, when the ambient light is sufficient, the bulb will flash three times, the initialization will end after one minute, the switch will enter the monitoring state, cover the ambient light with an object to make the switch inductively work, the person does not leave and is active, the switch will continue to work; After the person leaves, the switch automatically delays the shutdown of the load.
3. After installing the switch, power on, when the ambient light is insufficient, the switch directly enters the monitoring state, the person does not leave and is active, the switch will continue to work. Precautions 1. Do not operate with electricity during installation, and then power on after installation. 2. Do not use beyond the power range.
3. This switch is suitable for indoor environment, please do not install it in outdoor harsh environment. Technical indicators: 1. Working voltage:
AC180V-250V-(50 60Hz) 2. Load power: 5W-200W 3. Load characteristics: innovative two-wire circuit design, suitable for all kinds of loads.
Inductive loads such as fluorescent lamps, energy-saving lamps, etc. need to be compensated) 4. Static load: 5. Induction range: 140 degree cone angle, within 5-8 meters 6. Delay time:
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No. Infrared.
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