Why is your charger always unstable? Make complaints about washing machine, and use the power supply. If the power supply is used, it will need power supply. No matter it is TV, air conditioner, washing machine or a small charger, they need to take electricity through the household socket. But often there are buddy Tuckets, and the charger will sag on the socket. Why do you always have unstable plug? < / P > < p > at present, there are many relevant standards for socket outlets in China, such as the first edition of GB 2099.3-1997 issued in 1997, the second edition of GB 2099.3-2008 issued in 2008, and the third edition of GB 2099.3-2015 issued in 2015. In order to avoid reading difficulties for small partners, the following uses “new national standard” and “dawanyu” as the distinction. < / P > < p > the old national standard of dawanyu is not allowed to be sold on the plug-in board for a long time, and the home decoration wall plug-in on the e-commerce page has been rarely sold. However, due to the high versatility of dawanyu, many houses and residences built in the early stage adopted this type of socket, because at that time, it was really a choice for many users to plug in any plug. In addition, the universal socket is also common in hotels, airports and other places involving cross regional passengers, providing convenience for passengers in different regions. < p > < p > because the universal socket needs to be compatible with plugs from different countries and regions, the design of internal copper insert sleeve is complicated, which makes the plug only touch a little copper after insertion, which can not provide good clamping force and even has the ability to pass large current. < / P > < p > the introduction of the new national standard socket is to solve the problems such as unsafe and unstable clamping of the universal socket, The new national standard socket is no longer compatible with British and German plugs. It is mainly designed for plugs in China. The purpose is to make the copper sleeve inside the socket better contact with the plug, meet the demand of high current use, enhance the safety, and improve the poor clamping performance of the universal. < / P > < p > the clamping force has been mentioned above. After the plug is inserted into the socket, it depends on the copper sleeve in the socket to provide holding force. Now let’s talk about the copper sleeve and how the socket works. Socket work is actually very simple, clamp the plug to let the current through, but it involves the copper sleeve design, manufacturing technology, materials and so on. < / P > < p > the left and right sides are copper sleeves of new national standard plug-in boards. The left side is sliced design, which is only compatible with straight pins, and the right side is traditional design compatible with round pins. From the picture, we can see that they all clamp the pins to form surface contact. The smaller contact resistance can pass through large current and have good clamping force. < / P > < p > different manufacturers and different models have certain differences in internal design, some also add stiffener design, in addition, it also involves the thickness of copper sheet. Generally speaking, the thickness of large brand copper sheet is between 0.4mm and 0.6mm. The thicker copper strip can provide enough strength. On the other hand, the fatigue decline is not obvious after long-term use. This is why some sockets are easy to use when they are new and have poor contact after a few years. While some Sanwu products use copper sheet with thickness less than 0.3mm, and even the purity of copper can not be guaranteed, so the durability of thin paper is impossible to talk about. Most of the charger on the market of

can be divided into two types, square and strip. The traditional charger usually adopts square appearance, and the strip is mostly used by a new generation of Gan gallium charger. What make complaints about the slot is mostly bar charger. Why? < / P > < p > after the charger is inserted into the socket, a certain downward gravity will be generated due to the weight of the charger itself, which will form a similar lever principle to pry the charger out of the socket. The traditional charger is large in size and heavy in weight, but it can support the socket panel at the bottom. The fulcrum of the lever is close to the middle position, so the pulling force on the copper sleeve is less. < / P > < p > let’s take a look at the bar charger. From the appearance, it is very thin and long. After inserting the socket, the distance from the bottom is not far enough. The fulcrum of the lever is close to the copper sleeve. Even if the overall weight is light, the weight of the far end is amplified by the lever, and the downward pull force will be larger. In the contact part, the thickness of the charger pin will also have an impact, but the difference between the different charger pins on the market is not large, which can be ignored. In addition, due to its movable factor, the folding foot will change from upward prying force to transverse pulling force when it encounters tension again. The folding foot can not be bent downward by reverse inserting the charger, which can achieve certain improvement effect. < / P > < p > I believe that you have already known why the charger is not stable, and the charging head network has also been tested. Whether it is a bar charger or a square charger, insert it into the new national standard socket of a big brand and shake it vigorously, and it will not loose or droop. The main factor lies in the socket itself. There is no solution to this problem in the hotel environment. However, if you encounter this situation at home, you can ask a professional electrician to replace the socket at home with the new national standard of big brand. OK, this is the end of this issue. I’m yubeii. If you have any topics you want to discuss, please leave a message to let us know. See you next time. Didi Qingju bicycle has entered 150 cities