博文

目前显示的是 三月, 2019的博文

USB 3.0 data cable VS USB 2.0 data cable – OEM USB cable

USB 3.0 data cable features: High-quality oxygen-free copper pure copper core, high transmission speed, double-layer aluminum foil + inner membrane shield double-layer anti-interference, stable transmission, strong anti-interference ability, data cable twisted pair: minimize data cable signal interference USB 3.0 data cable  transmission specification, providing ultra-fast data transmission rate of up to 5Gbp/s, flexible PVC jacket: flexible, not easy to break, durable. USB 3.0 data cable VS USB 2.0 data cable 1. USB 3.0 data cable bandwidth is 10 times that of USB 2.0 data cable, can reach 5Gb/s (480MB/s), and synchronous transmission bandwidth can reach 384MB/s, which is the main difference between USB 3.0 data cable and USB 2.0 data cable. 2. Low power consumption (about 25% lower power consumption than USB 2.0 data cable at 20MB/s data transfer); 3. USB 3.0 data cable is more energy efficient than USB 2.0 data cable. For devices that are tem...

Power adapter PCB reasonable arrangement of components

First, the aesthetics should not only consider the neat and orderly placement of components, but also consider the beautiful and smooth routing. Since the average layman sometimes emphasizes the former, to evaluate the advantages and disadvantages of the circuit design one-sidedly, for the image of the product, the former should be given priority when the performance requirements are not critical. However, in high-performance applications, if you have to use a double-panel, but also packaged inside, usually can not see, you should give priority to the aesthetics of the trace. 2. The stressed circuit board should be able to withstand various external forces and vibrations during installation and operation. For this reason, the circuit board should have a reasonable shape, and the positions of various holes (screw holes, shaped holes) on the board should be reasonably arranged. Generally, the distance between the hole and the edge of the plate is at least greater than the diameter of t...

The difference between the original and the copy of the iPhone charger

There are a lot of people using the iPhone now, so the high-copy charger is also very popular. Of course, many users still use the original charger. I don’t know if you have the same feeling as me. Those chargers are just like our salary, and they always disappear inexplicably. Cheap chargers don’t dare to buy, so that you won’t buy inferior or high-copy chargers, today Yuda original iPhone charger wholesale  will share with you how to distinguish the charger knowledge. 1. First look at the outside, in fact, the careful person can immediately feel which one is the charger of the copy, the overall craftsmanship is still very easy to compare. Non-original chargers have a green dot. Merchants often say that Green Point is one of the genuine and security logos, and green dots are genuine. This is not the case. In fact, most of the high-copy chargers have green dots, but the same is a poor quality chip. Don’t be deceived by the seller. 2. Pay attention to the text of the charge...

What should I do if the car phone charger is charging slowly?

First of all, the car’s cigarette lighter is a key point to pay attention to. Many car owners often pull out the car charger directly after using the car charger. If the car’s cigarette lighter is not covered, it will cause wear and erosion of the car’s cigarette lighter for a long time, resulting in poor contact between the car charger and the cigarette lighter’s contact parts, affecting the charging use.   Secondly, after many times of plugging and unplugging, the plug and hardware of the car charger are worn, and some even have a decrease in elasticity, which cause the plug and the cigarette lighter not in close contact. This is a big problem, which causes this problem to occur. The reason is often that the quality of the car charger is very poor. After repeated insertion and removal, sufficient elasticity cannot be restored. When the plug is inserted into the cigarette mouth, the insufficiently fast buckle can not effectively contact the cigarette lighter, resulti...