In order to discharge the odor in the bathroom in time, many families have installed ventilation fans, but some visitors or children often forget to open the ventilation fan. In order to solve this problem, an electronic device capable of automatically controlling the ventilation fan and the illumination lamp is designed, so that no trouble is added to the person who goes to the bathroom, and the air can be automatically ventilated and the lamp can be turned on and off, which is energy-saving and convenient. working principle The working principle of the device circuit is shown in the figure. It is composed of a magnetic switch circuit, a monostable delay circuit, a lighting control circuit, a ventilating fan control circuit, and a power supply circuit. When the bathroom door is closed, the permanent magnet ZT is close to the normally closed reed switch AG. Due to the magnetic force of the ZT, the intra-AG contact is broken, and the triode VT is turned off without biasing. At this time, the time base integrated circuit IC1 The 2 pin is high level, so IC1 is in the reset state, the 3 pin of IC1 outputs the low level, the relay J has no current, and the ventilation fan and the illumination lamp are in the power-off state. Once someone enters the bathroom, the distance between ZT and AG will increase at the moment of entering the door, and the magnetic line of ZT will not act on the AG. Therefore, the two contacts in the AG are reset and contacted. At this time, the triode is biased and turned on. After VT is turned on, the pin 2 of IC1 is changed to low level (only the saturation voltage drop value of VT), and the IC trigger is set. At this time, the 3 pin of IC1 jumps from the original low level to the high level, and the relay J excitation pull. After J is sucked, its normally open contact J1-1 is closed, and the ventilating fan M is energized to start exhausting. At the same time, another set of normally open contacts J1-2 of J is also closed, the illumination lamp H is energized, and its height can be adjusted by the RP. If it is daytime, because there is strong light on the photoresistor CdS, so that the internal resistance of CdS is small, the voltage across the phase shifting capacitor C6 is not enough to make the trigger diode 2ST turn on, so the VS has no trigger current and is blocked. , the illumination H will not light up. At night, since there is no sunlight on the CdS, the internal resistance of the CdS becomes very large, which is equivalent to an open circuit. At this time, 2ST is turned on, VS is turned on, and the illumination lamp H is lit. After opening the door and entering the bathroom, although the door is closed again, the circuit is still in the state of ventilation and illumination (night) due to the monostable effect of IC1. When the door is opened, the ZT is kept away from the AG, and then the door is closed again, causing the ZT to be close to the AG. After a delay, the lamp and the ventilation fan will automatically stop working. In order to ensure that the door is normally closed, it is necessary to place a tension spring outside the door or to use a loose leaf with a torsion spring, so that the door is automatically closed after the door is closed to ensure that the ZT and the AG are close together. The device is stepped down by capacitor C5, and is filtered by C4 after full-bridge U rectification. VDW is regulated and supplied to the circuit DC power supply. Component selection and production The list of components is shown in the table below. No. Name Model No. Name Number of models R1, 6 Resistance 10K 2 C5 Metallized capacitor 0.068u Withstand voltage ≥400V 1 R2 Resistor 5.1K 1 C6 Metallized capacitor 0.1u/160V 1 R3* Resistor 1M 1 VD Rectifier diode IN4001 1 R4 * Resistor 51Ω 1 VDW Zener diode 12V 1 R5 Resistor 1M/1W 1 2ST Bidirectional trigger diode break voltage 30-40V 1 RP Potentiometer 100K Linear 1 VT Transistor 9014 1 CdS Photosensitive resistor MG45-32, etc. Unsealed 1 VS Bidirectional SCR 3A/400V 1 C1, 3 Polyester Capacitor 0.01u 2 IC Time Base Integrated Circuit NE555 1 C2 Electrolytic Capacitor 47u 1 J Electromagnetic Relay JRX-13F 1 C4 Electrolytic Capacitor 100uF/50V 1 AG Reed Switch Φ4mm Normally Closed The monostable operating time of the IC is determined by the value of 1.1R3C2. Adjusting the RP can change the brightness of the illumination lamp H. The RP can be selected with a potentiometer or a solid variable resistor. When the relay J is found to be weak, it can reduce the resistance of R4 or simply eliminate it. After the entire circuit is welded and debugged, a plastic box can be put into use.
·Basic precautions
Do not put expensive oil into low-quality cartridges to avoid wastage. Most pre-filled oil cartridges have the so-called 510 thread. The oil cartridge screws onto a rechargeable battery. Some of these batteries have buttons and some heat up automatically when you pump the oil. Some batteries have multiple temperature settings and some heat up to a preset temperature; these features need to be known in advance.
·Cleaning notes
Use a suitable cleaning tool to clean them, such as activated charcoal or dried tea leaves in a used pipe to absorb the oil. It is important not to use alcohol or other boiling water to clean the pipe, and to wait until it has cooled down completely before cleaning. Otherwise, the hot stem will come into contact with the watery liquid and cause the mouthpiece tenon to loosen, thus shortening the life of the 510 cartridges.
This is what you should be aware of when using 510 cartridges. At the same time, when using 510 cartridges, there are still some vaping tips, for example, when using them, be careful not to suck too hard, will not produce smoke. When you inhale too hard, the smoke is sucked directly into your mouth and not atomized by the atomizer, so gently inhaling is more powerful and gives you a better vaping experience.
510 Cartridge Oem,Leakproof 510 Cartridge,510 Battery And Cartridges Oem,510 Cartridge Shenzhen MASON VAP Technology Co., Ltd. , https://www.cbdvapefactory.com