Button switch and push button switch and self-locking switch working principle and classification Want to understand the button switch first from its type and working principle:
How the button switch works:
It is a delay circuit, but the form of the trigger is different. The simple circuit consists of a large capacitor, a large resistor, and an FET field-effect transistor. When triggered, the capacitor is charged and the trigger cycle is completed. At the end of charging, the gate capacitance of the FET gate is applied to a high voltage at the gate, the FET is turned on, and the drain of the gate is connected to a load, and the load is operated. Since the resistance of the gate to the ground is very high, usually there are several hundred megaohms, so the discharge is slow, so a discharge resistor is usually added, usually an adjustable resistor, which is used to adjust the delay time, the resistance is large, and the delay is long. The resistance is small and the delay is short. When the capacitor is dead, there is no voltage at the gate, the FET enters the off state, and the load on the drain stops working.
Classification of button switches:
There are many types of push button switches, which can be divided into ordinary button type, mushroom head type, self-locking type, self-resetting type, rotary handle type, with indicator light type, illuminated symbol type and key type, etc. Buttons, three buttons and different combinations are generally made up of modular structures, consisting of button caps, return springs, bridge contacts and housings. They are usually made into a composite type with a pair of normally closed contacts and normally open contacts. Some products can increase the number of contact pairs by connecting multiple components in series. There is also a self-contained button that automatically holds the closed position when pressed, and can be turned on after the power is turned off.
Xiangjian switch; never compromise quality ---- always committed to creating the best quality assurance system Xiangjian switch; continuous innovation technology ---- create the world's most outstanding and most innovative products Xiangjian switch; Standardized and efficient service---- Provide the most professional and efficient service, and strive to satisfy customers with Xiangjian switch; core values ​​Xiangjian switch; integrity service quality professional innovation [If you want to know more about Xiangjian Electronics, please call us ! 】
Chinese official website http:// English official website http://
The color of the smart color changing film can be customized, red, blue, black, gray, green, etc. The dimming film can be divided into roll material and sheet material. There are two sizes of sheets, 165*105mm and 297*210mm (A4 size). The switchable dimming film can be switched according to the width of the division, there are 1m, 1.2m, 1.8m, 2m, can be customized. We have done a variety of projects, such as villa balcony window (to prevent no one peeping), office meeting room (can do projection wall or partition door), floor door (sliding door, automatic door can be matched), shopping mall window, museum 3D exhibition hall, sightseeing elevator glass, car windows and license plates and so on. You can trust us. We have rich experience. Our products have been tested for tens of thousands of times. The probation period is more than ten years. All kinds of certificates are complete. TQX has been continuously developing high-tech products, and 2D and 3D fields have been penetrated.
Custom Switchable Film,Self-adhesive Film For Glass Door,Laminated Glass Smart Film,Magic Film For Glass,PDLC Smart Glass Film,Custom Smart Film For Building
Tianqixun Technology , https://www.tqxdisplay.com