Lenovo Ideapad 320 Laptop Keyboard Price Buying Guide

Lenovo Ideapad 320 Laptop Keyboard Price Buying Guide

2022-03-08
Crowberry laptop replacement parts
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The 5 Best Reasons Why You Should Use a Laptop Screen Supplier
The 5 Best Reasons Why You Should Use a Laptop Screen Supplier
Introduction to laptop screen supplierLaptop screen is one of the most common applications that people use on a daily basis. A laptop screen is an image of a computer screen that uses one or more screens to display information. Laptop screen suppliers can be small businesses that make and sell laptops, or large companies that have hundreds of computers and work with millions of customers. The good thing about laptop screen suppliers is that they are cheap and affordable. They also have many options for users to use their laptops for various purposes. There are so many different types of laptop screen suppliers that it is hard to pick one.I'm sorry, but this article is very boring. I've been doing this for years. A lot of people come to me with questions about laptops and they always want to know how to fix it. The only way to fix it is to have a new laptop. And when you have a new laptop, you can use the Dell Proqiy laptops as well as any other laptops that you have in your home. If you have an old laptop, it's not that hard to fix it. You just have to change the case and make sure that the battery is charged up.As soon as you buy a laptop, you will be able to make more money than you thought possible. Laptop computers are easy to use and cheap to make. The truth is that laptops are not just great for making videos and other creative activities but they are also very useful for working in an office. There are many uses for laptops, from playing games to using them to write notes on a piece of paper. Laptops are useful for all sorts of things, from personal work to professional work.It is easy to understand that laptop screen supplier has been one of the most popular in the past few years. Nowadays, there are so many different types of laptop screen suppliers out there. It is important to know that each one of them has its own characteristics and prices. So it is important to have a good understanding of what they offer. If you want to buy a laptop screen supplier, you should have a good understanding of what they offer. The following are some of the things that you should know about laptop screen suppliers.First impression and using experience of laptop screen supplierThe first impression of laptop screen supplier is very important. It is easy to be confused with other people's experience. A good laptop screen supplier should be able to explain what they do and how they do it. When you use their service, you will get a good service. When you buy their service, you will get a good service. If you are satisfied with their service, you will have a good experience.When to use laptop screen?' 'When to use laptop screen?' 'When to use laptop screen?' 'When to use laptop screen?' 'When to use laptop screen?' 'When to use laptop screen?' 'When to use laptop screen?' 'When to use laptop screen?' 'When to use laptop screen?' 'When to use laptop screen?' 'When to use laptop screen?' 'When to use laptop screen?' 'When to use laptop screen?' 'When to use laptop screen?' 'When to use laptop screen?' 'When to use laptop screen?' 'When to use laptop screen?' 'When to use laptop screen?People often come to us because they have some problems with laptops. In the past, when they were able to buy laptops from us, they would come to us because they had problems with laptops. It is our job to make sure that they get back to us in good condition and we can provide them with new laptops.The first impression of laptop screen supplier is important because it will affect the quality of the service that you will get from the laptop screen supplier. First impression is important because it will affect the quality of the service that you will get from the laptop screen supplier. So, if you want to be sure that you will get the best service from the laptop screen supplier, you need to make sure that you have a good first impression. You need to make sure that you have a good first impression.Pros and cons of laptop screen supplierIt is important to know that there are some advantages of laptop screen supplier, especially in the case of screen replacement. If you are going to replace your laptop screen then it is important to know that there are some disadvantages of laptop screen supplier, especially in the case of screen replacement. So if you are going to replace your laptop screen then it is important to know that there are some advantages of laptop screen supplier, especially in the case of screen replacement. So if you are going to replace your laptop screen then it is important to know that there are some disadvantages of laptop screen supplier, especially in the case of screen replacement.Some people are very curious about the long-lasting effect of laptop screen. They ask what is the long-lasting effect of laptop screen? A long-lasting effect of laptop screen is that it lasts for a long time. People who have read this blog will know that laptop screen lasts for a long time. The reason why laptop screen lasts for a long time is that it is an excellent device that is easy to use. You can use it to write your essays, do math calculations, check your emails, take notes, watch videos, etc.Laptop screen is an essential part of any computer. Laptop screen suppliers are able to offer different screens that will suit your needs. You can find many laptop screen suppliers in the market, but if you want to buy the best laptop screen then you should go for the one that will meet your needs. It is important to check the specifications of the laptop screen before you decide to buy it. This will help you in choosing the best laptop screen that will suit your needs.With laptops, we don't use computers for work. We use them for personal entertainment. When we use computers for work, we need to know how to use them properly. For example, when we use a laptop for work, we need to know how to use it properly. So when we use a laptop for work, we need to know how to use it properly. And when we use a laptop for work, we need to know how to use it properly. When we use a laptop for work, we need to know how to use it properly.Features to Consider When Buying laptop screen supplierMost of the laptops that we have seen in the past few years are cheap and do not last very long. There are also many companies that make low-end laptops that cost about $400. So, when buying a laptop, you should consider what kind of laptop you want to buy. The best way to choose a laptop is to go for a good-quality laptop that will last for a long time. If you are looking for a laptop that will last for a long time, then it is important to go for a good-quality laptop that will be of good quality.Most of the laptops that we see today are high-end and most of them are powered by Intel processors. The processor in a laptop is an important factor that affects the overall performance of the laptop. We have to be careful when buying a laptop because it is one of the most expensive things that we can buy. There are many different options that we can choose from when buying a laptop. It is best to make sure that we choose the best laptop that we can afford.The purpose of laptop screen is to provide high quality computer components and devices that are durable and efficient. In order to ensure that the components and devices that are used in the computer are well made and reliable, they need to be lightweight and small in size. A laptop screen is one of the most important components that will help you perform better in your work. If you need to use a laptop screen, then you need to make sure that you get the best one that will suit your needs. You can buy a laptop screen from a local shop or online store. There are several good online stores that sell laptop screen.Reasons why you should buy a laptop screen supplierWe have been in this business for over 20 years. We have built up a solid reputation for delivering high quality products and excellent customer service. Our team is here to help you with any questions you may have. Please feel free to send us a message or give us a call.When you have the computer, it is much easier to do things. You don't have to make lots of trips to the shop. You don't have to go through a lot of hassle. You don't have to spend a lot of money on something that will not work for you. You don't have to spend a lot of time looking for something that will work for you. You don't have to spend a lot of money on something that will not work for you. You don't have to spend a lot of time looking for something that will work for you.When you need to know how to write a blog titled 'How to choose the best computer accessories in your city? A good computer is the key to everything. It is an indispensable tool for work, school, and other activities. If you are not using it properly, you will be robbed of all the benefits that it provides. When you use it well, you will have more time to do other things.There are so many people who want to buy a laptop screen. I would recommend that you choose a laptop screen supplier who can provide you with a good service. I am sure that you will be satisfied with the service that they provide. If you are not satisfied with the service, then I suggest that you don't buy a laptop screen. The best thing about a laptop screen is that it is easy to use. You can just pick up the laptop screen and go through it. It is really easy to use.
How to Batch Add Users in Linux System
How to Batch Add Users in Linux System
Tutorial on the method of batch adding users in Linux system:When do we need to add users in large quantities? Sometimes we need dozens or more users to complete the same or similar tasks on the host. For example, we want to add a group of FTP users at the same time. These FTP users belong to the same group, but they are not allowed to log in to the server through the terminal or remote; Sometimes we may teach. For example, we have 50 students, and each student has an independent user name on the server, can log in to the system, manage his own account or complete some homework under his own authority;Batch user addition process:The process of adding users in batch is to import a file with contents written in strict accordance with the writing format of / etc / passwd through newusers to complete the process of adding users, and then import the user password file through chpasswd to complete the process of updating user passwords in batch;1. Newusers is a tool for adding users in batches;Its usage is very simple. Newusers is directly followed by a file; The file format is the same as / etc / passwd;User name 1: X: uid: GID: user description: user's home directory: shell usedgive an example:/bin/sh/bin/bash/sbin/nologin/bin/ksh/bin/tcsh/bin/csh/bin/zshExcept / SBIN / nologin, other types of shell can log in to the system; Nologin is mostly a "shell" used by virtual users, that is, although he is a system user, he does not have the permission to log in to the system; If you want to add such users, set their shell to / SBIN / nologin, such as the above example; You can read the corresponding reference documents about the user name, uid, GID and the user's home directory;2. Chpasswd batch update user password tool;Chpasswd tool is a tool to update user passwords in batches. It redirects and adds the contents of a file to / etc / shadow;Chpasswd fileHowever, the content of the document is not without agreement. It must be written in the following format without blank lines;User name: passwordUser name 1: password 1User name 2: password 2give an example:win00:123456win01:654321Batch add user instances:1. First, we create user files and password files;We will create the file userfile.txt containing the new user; the other is userpwdfile.txt setting the password for the newly added user;Then open the file userfile.txt with a text editor and add the following contents;The content format of the userfile.txt file is the same as that of / etc / passwd and must be written in strict accordance with the format of / etc / passwd. The users added above cannot log in to the system, but can be used for FTP login, but you have to open it in the configuration file of the corresponding FTP server to allow local users to have read and write permissions. If you want some of the above users to log in to the system, you can Change the shell analogy, such as / bin / bash; let's write the content of the password file userpwdfile.txt of the new user; the user name in the content of this file should be the same as the user name of userfile.txt; that is, we first added users from win00 to win09, and now we want to update the password for these users; for example, the following;win00:123456win01:654321win02:123321win03:qweewqwin04:googlewin05:adadwcwin06:wssceewin07:xxec32win08:543wewwin09:3ce3wf2. Batch adding users through newusers and chpasswd;In this way, even if the addition is completed, if you find the user's explicit password in / etc / passwd, you can map it to the / etc / shadow file name through the following command;
How to Choose High-quality  Msi Laptop Keyboard Price
How to Choose High-quality Msi Laptop Keyboard Price
The introduction of msi laptop keyboard priceIt is very important to understand that there are two main factors that determine the cost of any computer. One is the technology used to make the computer and the other is the hardware that it has. For example, if you are looking for a desktop computer, you will want to be sure that it has a CPU that can produce good performances. If you are looking for a laptop, you will want to be sure that it has a powerful processor that can produce good performance. There are also other factors that affect the cost of a computer. The most important factor is the power supply that the computer has.I don't know how to use the mouse. I don't know how to use the mouse. I don't know how to use the mouse. I don't know how to use the mouse. I don't know how to use the mouse. I don't know how to use the mouse. I don't know how to use the mouse. I don't know how to use the mouse. I don't know how to use the mouse. I don't know how to use the mouse. I don't know how to use the mouse. I don't know how to use the mouse.Most of the time, people use laptops as their main mode of work. A laptop is an amazing device that allows people to do things that they never thought possible. They are small and light and don't take up much space. Laptops are cheap and efficient and can be very useful for many different purposes. There are so many different uses for laptops that they can be used for anything.I've been having a lot of trouble with my computer lately. I have no idea what's wrong with it. I don't know how to fix it. I just want to get it working again. It doesn't seem to work very well. I have tried all the solutions that I can find online. The only solution that I can think of is to buy a new computer and use it for a while. That would be the only solution that I can think of.Related popular brands of msi laptop keyboard price industryMsi laptops are famous for high quality work, which makes them the best choice for people who need to be comfortable with computers. It is also easy to find companies that have high quality products and are not only well-known but also known for their good service. The problem with most of the products that we see on the market is that they don't have any particular design or look. That is why it is important to make sure that you can choose the right one for you.Msi laptop keyboard is very cheap and it is easy to use. This is the best place to buy and read about all the latest products in the market. It is also a good place to find out about new technologies in the market. In this way, you will be able to know about the most recent innovations in the market.In order to increase the chances of having an interesting reading experience, it is important to have an interesting reading experience. And that is what we are doing in this blog. We are going to provide you with some interesting information about related popular brands of msi laptop keyboard price industry. So let's go through them.Many more laptops are now running Linux, and there are new apps that allow users to get work done faster. The search engine works by asking you if you want to see what other people are saying about your brand. So if you're in the market for a new laptop, you should be looking for something that will be easy to use and compatible with your computer. For example, many laptops today have built-in keyboards that can be used to type on them. This means that they are easier to use than traditional keyboards and provide a cleaner typing experience.The benefits of msi laptop keyboard priceIt is important to have good laptop keyboard and mouse. For people who don't have enough money to buy new laptop, they can get good laptop keyboard and mouse and it will be much easier to use their laptop. They can also get good laptop keyboard and mouse and it will be much easier to use their laptop. It is important to have good laptop keyboard and mouse.Most people don't think about what is really important when it comes to choosing a laptop. They just go with what they think is best. And that is not good for you. You need to know what is really important to you. The first thing that you need to do is make sure that you are comparing different laptops. There are so many different laptops out there that you need to choose the one that you will be using the most. So make sure that you are comparing different laptops so that you can get the best deal possible.In the past, many people were saying that they are going to spend hundreds of dollars on buying a new laptop. However, now that laptops are getting cheaper, it is not as expensive as it used to be. With more and more people spending money on laptops, there is no need to spend so much money on them. It is also good to know that you can use your laptop for different purposes. You can use it to work from home, and you can use it to go to the cinema or just go out and about.We have been seeing so many people complaining about their computers not working that they started looking for ways to fix it. They thought that if they used a software solution to fix it they would save money and get back to their computer as soon as possible. We know that this is not true and we want to show you how you can fix your computer problems using just your own hands. So let's use the information we have here to find out how to fix your computer problems.The product instructions of msi laptop keyboard priceIf you are interested in buying the best laptop keyboard, then it is very important to read through the product instructions of msi laptop keyboard price. This will make it easier for you to use the product and be able to decide if you will buy it or not. In order to save your time, it is better to use the input box provided by the company.When it comes to writing a good blog titled 'The product instructions of msi laptop keyboard price', the important thing is to write something that will make people stop reading your blog. This is what makes a good blog title. A good blog title will make people stop reading your blog.You can use the functions of the software to change the text, font, color, size, and so on. There are also features that you can use to customize the appearance of the text. You can use the features to write a blog titled 'The product instructions of msi laptop keyboard price' where the section focuses on 'The product instructions of msi laptop keyboard price' could look like this 'You can use the functions of the software to change the text, font, color, size, and so on. There are also features that you can use to customize the appearance of the text.There are so many ways to use the mouse. The most common way to use the mouse is to press the Esc key. Pressing the Esc key will bring up the space bar. If you press the space bar, the next key will be the Tab key. Pressing the Tab key will bring up the function keys. If you press the function keys, the last key will be the control key. Pressing the control key will bring up the numeric keypad. Pressing the numeric keypad will bring up the main menu. Pressing the main menu will bring up the options menu.How to maintain msi laptop keyboard priceJust use your computer mouse and click the button that looks like this "When you are done clicking the button, wait for the picture to load. If you don't see the picture, try using your mouse and press the X key. You will see the picture now. Press the X key again and you will see the picture again. That is how to use your computer mouse and click the button that looks like this 'When you are done clicking the button, wait for the picture to load. If you don't see the picture, try using your mouse and press the X key. You will see the picture now.For most people, laptops are their main mode of personal information. Laptops are so easy to use that it is very difficult to be able to put them away without feeling guilty. The reason why laptops are so useful is that they allow us to do things that we would not be able to do with a PC or desktop computer. If you have an extra set of computing skills, then you can use your laptop to work on other projects and use it to make videos and photos.Most of the time people are confused about how to maintain their laptop keyboard. They have different ways to do it. There are two main ways to do it. One is to get new ones and the other is to use them as they are. The first way is called user manual and the second is called repair manual. User manual is a book that tells you how to use your laptop. It will be easy to follow if you read it carefully. Repair manual is a book that tells you how to fix your laptop problems.It is possible to use your computer to type. This means that you can have access to all the information that you need on the computer. All you need to do is put it in the right order and get back to work. A good laptop keyboard will provide you with a typing experience that will be as comfortable as possible. It will also make it easier to type, which will help you get more done in a shorter time.
Why Do Dell Laptop Keyboard?
Why Do Dell Laptop Keyboard?
The introduction of dell laptop keyboardDell laptop keyboard is an amazing product that can change the way we work. Dell laptops are designed to help people work more efficiently. Dell laptops are built to give you the best in terms of functionality and productivity. Dell laptops are great for all jobs, from home to the office. Dell laptops are affordable and great for anyone who wants to use their laptop as a desktop computer. Dell laptops are easy to use and offer high quality work experience. Dell laptops are an investment that will make your life easier.It is important to understand that Dell is not only the name of a computer brand but also a computer company. Dell laptops are known for their high quality and stylish design. Dell laptops are very easy to use and work well in all kinds of office environments. Dell laptops are affordable and flexible. Dell laptops are great for people who don't want to spend a lot of money on their computers. Dell laptops are good for businesses because they are easy to use and efficient. Dell laptops are also good for students because they are small and lightweight. Dell laptops are very cheap and you can get them for under $300.When using dell laptop keyboard is not so easy. Dell laptop keyboards are very comfortable to use and very easy to read. When using dell laptop keyboard it is not so easy to use and when using dell laptop keyboard it is not so easy to read. When using dell laptop keyboard it is not so easy to use and when using dell laptop keyboard it is not so easy to read. When using dell laptop keyboard it is not so easy to use and when using dell laptop keyboard it is not so easy to read.Related popular brands of dell laptop keyboard industryRelated popular brands of dell laptop keyboard industry is an easy way to save your time and energy by reading through the articles that you will find in this site. They will make it easier for you to get back to your favorite topics easily.Dell is now the number one in the world in terms of laptops. The reason for this is that Dell has always been a global brand, so there is no need to worry about its success. In fact, Dell is more than just a brand. Dell is a software company that offers high quality computer and laptop products. It has over 10,000 employees worldwide and sells over 4,000 products in its retail stores. It also offers professional services to help customers with their technology needs.The smart way to make money online is to create content that people will want to read. They will come to your site and they will find what they are looking for. People who have been through this process often say that it is easy to write and it is fun to do. You can also be a creative person and use your creativity to come up with interesting ideas that people will want to read. The more you know about how to use your creativity, the more likely you are to succeed.The type of company that is really famous is Dell. It is very easy to find the good company name and product name in the world. The most famous companies are Dell, HP, Lenovo, Acer, Asus, etc. So it is very easy to find the good companies in the world. In this case, it is easier to find the good companies than to find the bad companies. The bad companies have some great products and services and they also have some bad products and services. If you want to find the good companies, you need to use some important strategies.The benefits of dell laptop keyboardIt is really easy to be impressed by dell laptop keyboard. You can use it for any purpose you want. Dell laptops are designed to provide high quality work and performance for all types of users. It is an innovative product that will become more popular in the future. You can buy it from Dell stores, eBay, Amazon, Kmart, Best Buy, etc.It is really important to be careful when using a laptop because you will get sick easily. Dell laptops are easy to use and very portable. It is easy to fix and don't have to spend a lot of time fixing your laptop. They also have an amazing customer service. I am not sure if they are more expensive than other brands but they are much cheaper than most brands. It is really important to be careful when using a laptop because you will get sick easily. Dell laptops are easy to use and very portable. It is easy to fix and don't have to spend a lot of time fixing your laptop.People who have read this post often come to think of dell laptop keyboard as a solution to all their problems. But they don't know that dell laptop keyboard is just a computer peripheral that helps them to use the computer. Dell laptop keyboard also has features that make it easy to use the computer. They also have features that make it easy to set up and use the computer. People who have read this post often come to think of dell laptop keyboard as a solution to all their problems. But they don't know that dell laptop keyboard is just a computer peripheral that helps them to use the computer.Dell laptops are great computers. Dell laptops are also great computers. Dell laptops are also great computers. Dell laptops are also great computers. Dell laptops are also great computers. Dell laptops are also great computers. Dell laptops are also great computers. Dell laptops are also great computers. Dell laptops are also great computers. Dell laptops are also great computers. Dell laptops are also great computers. Dell laptops are also great computers. Dell laptops are also great computers. Dell laptops are also great computers. Dell laptops are also great computers. Dell laptops are also great computers. Dell laptops are also great computers.The product instructions of dell laptop keyboardYou can find more information about the Dell laptops in the Dell laptops page. The Dell laptops are mostly affordable and well-equipped with high-quality components. They also have an extensive range of apps that are easy to use. The Dell laptops are very versatile and you can use them for various purposes. You can use them to work on your computer, or you can use them to make notes on your desk or to prepare for a trip. The Dell laptops are available in different colours and sizes. They are mostly priced at around $300 and they have many features that you can use to get the most out of them.If you need to make sure that your laptop has a good battery, use a notebook computer with a high-power battery that is capable of producing enough power to run your laptop for long periods of time. A laptop computer with a high-power battery that is capable of producing enough power to run your laptop for long periods of time is a good choice for people who are trying to learn how to use a laptop computer.In order to get a better understanding of the functions of the Dell laptop keyboard, it is necessary to read through the Dell laptop keyboard instructions carefully. If you have been doing your research and found that you can use the Dell laptop keyboard in a different way, then you can try to change the way you use the Dell laptop keyboard. In order to make sure that you are not using the Dell laptop keyboard in a way that will affect the functionality of the Dell laptop, you should read through the Dell laptop keyboard instructions carefully.Dell is now offering two new laptops in the form of the dell Inspiron 3 15 3 5 14 and the dell XPS 13 15 3 5 14. Dell will also be introducing a new generation of desktop computers with high-end features that are not available on its previous models. Dell has announced that it will begin selling new products in late July, including a new iMac and a new notebook with Intel processors. Dell's line of desktops will include both an iMac and a Mac Pro, while the iMac Pro will be discontinued after September 1, 2015.How to maintain dell laptop keyboardDell laptops are designed to be used by people who have a long history of using them. Dell laptops are available in a wide range of styles and sizes, from the simple desktop model to the high-end models that offer plenty of storage space and power. The most common type of Dell laptop is the dual-core or quad-core processor, which can run multiple programs at the same time. If you need to work on your laptop while using it, then you need to know how to use it properly. This article will give you some tips on how to use your Dell laptop.Just try to keep your Dell laptop in good condition and use it regularly. If you don't do that, you will eventually end up with a dead laptop. It is not hard to fix a Dell laptop that is working fine for years. If you don't know how to keep your Dell laptop in good condition and use it regularly, you will eventually end up with a dead laptop.While there are plenty of issues with Dell laptops, it is very difficult to say that they are anything other than a top-notch computer. It is easy to say that Dell laptops are excellent computers, but there are still many people who don't know how to maintain them. If you have an old Dell laptop, then you can learn how to use it properly. You can also learn how to use Dell laptops so that you can get rid of any bugs and make your laptop work well.We use Dell laptop keyboards to keep our computers running smoothly. It is also very important to have a good set of Dell laptop keyboards. We recommend that you get a good set of Dell laptop keyboards for your computer. You can use Dell laptop keyboards to make your computer run smoothly. You can use Dell laptop keyboards to keep your computer running smoothly. You can use Dell laptop keyboards to keep your computer running smoothly.
The Design of a Small Planar Transformer / Inductor Is Introduced in Detail
The Design of a Small Planar Transformer / Inductor Is Introduced in Detail
1. IntroductionWith the rapid development of electronic information technology, various electronic devices have entered the SMT (surface mounting technology) era, and electronic devices are increasingly required to be light, thin and miniaturized. Although the traditional power electronic transformers and inductors have played an important role in the era of electronic tubes and discrete transistors, they can not be used in today's modular electronic equipment because of their large volume. How to develop small planar electronic transformers and inductors is the focus of designers. This paper describes the design and manufacture of 230khz, 120W small planar transformer and 20a, 10 with multilayer printed board manufacturing technology, NC machine tool processing technology, surface coating technology and high frequency and low loss ferrite core H high current filter inductor.2. Circuit form and technical indexes of transformer and inductorFigure 1 shows the main circuit of active clamp / reset single ended forward converter. The circuit has zero voltage conversion function, which is conducive to improve efficiency and reduce EMI / RFI.The circuit consists of vq2, VD2 and CCL, which provides a low resistance working path for the energy storage transfer of leakage inductance L1 and excitation inductance LM. After vq2 is turned on, CCL continues to be charged, and the current of the clamping circuit decreases in a resonant manner. Since the rectifier VD1 is cut off, L1 and LM are connected in series, and the resonant frequency is determined by L1, LM and Cl, there are certain inductance requirements for the primary of the transformer.In addition, after the circuit VQ1 is cut off, the voltage polarity of the transformer winding is reversed and Ca is charged. During the charging process, the magnetization current gradually decreases. By properly selecting parameters, vq2 is turned on before the zero crossing of the magnetization current, which makes it possible to change the direction of the magnetization current. The magnetization current is reversed and the clamping voltage UCL is reversed to the primary winding of the transformer, The working area of the drive transformer B-H extends to the second quadrant and the third quadrant. At the same time, the discharge of CCL capacitor energy storage is transferred to L1 and LM storage. After VQ1 is turned on, the B-H working point starts from the third quadrant, and the normal working area is basically symmetrical with the origin of the B-H axis. In this symmetrical area, the unidirectional variation value of B-H is consistent with that of the traditional single ended forward converter. In order to maintain normal output regulation, the same volt second product is applied to the transformer, and the resulting core loss is consistent with that of the single ended forward converter. During actual operation, the maximum working magnetic flux density (BM) shall be selected. The transformer can work in - BM BM, so B = 2bm, as shown in Figure 2.T1 in the circuit is the transformer we need to design, with working frequency f = 230khz, input voltage Vin = 230V and primary inductance LM = 117 H 10%, maximum working ratio 0.45, output voltage Vo = 5V, output current IO = 20a, Lo is filter inductance, Lo = 10 H. The working environment temperature is - 45 50 , the temperature rise is 50 , the test voltage is 2KV, the height of transformer and inductor is 12mm, and the length and width are about 40mm.3. Plane transformer, inductor core and structure3.1 magnetic coreAt present, the magnetic materials used in power switching transformers include permalloy, amorphous alloy, ultramicrocrystalline alloy, ferrite and other materials. Ferrite material is selected to make magnetic core. In order to make full use of effective space, magnetic core with thicker core column and wider window width must be selected, which is conducive to reducing turns and current density. In view of the limitation of the overall height, necessary processing is also required.3.2 windingIn the traditional winding, the coil is wound on the skeleton, and the conductor is of circular section. In addition, when the conductor flows through the high-frequency alternating current, it is also limited by the penetration depth of the skin effect. The calculation formula isWhere is the penetration depth (mm), Is the angular frequency, = 2f(rad) Is the conductor permeability (H / M), Is the conductor conductivity (s / M).The relative permeability of copper is equal to 1, which is the vacuum permeability, thenSubstituting this into the above formula can be simplified toWhere f = 230khz, the available conductor diameter is 2 = 0.275mm. Therefore, under the condition of high current, the transformer winding adopts multi strand winding, which will greatly reduce the utilization rate of magnetic core window. We decide that the primary winding and auxiliary winding with low current are made of multilayer printed board and double panel respectively, and the secondary winding and filter inductance winding up to 20A are made of folded copper strip with rectangular section, so as to make the most effective use of window holes.4. Transformer design4.1 the core size is determined by the power transmission capacityThe power transmission capacity of a transformer depends on the product of the area of the magnetic core column and the area of the window hole, APWhere: Pt is the sum of the primary and secondary power of the transformer. When the efficiency of the transformer is high, twice the output power can be taken. KJ is the structure constant of the magnetic core, which is between 365 and 632, and we take 450. B is the incremental magnetic induction intensity. According to the circuit B = 2bm, BM is taken as 0.1t, then B = 0.2T. F is the operating frequency 230 kHz. Ku is the window utilization, between 0.3 and 0.4. KF is the waveform coefficient, 4 for rectangular wave and 4.44 for sine wave.Substitute the above data into the calculationAfter repeated comparison and calculation, we selected PQ40 magnetic core and ground it into the size we need. As shown in Figure 3, the AP value is only 0.69.4.2 winding(1) Primary turns calculationWhereUp1 is the minimum amplitude of transformer input voltage 230V, B is the incremental magnetic induction intensity 0.2T, Is the maximum working ratio of 0.45, and SC is the cross-sectional area of the magnetic core of 1.74mm2.Substitute the above data into the calculationW1 = 12.93 turns.(2) Secondary turns calculationWhere: up2 is the voltage amplitude of secondary winding,Uo is the output voltage 5V. U2 is the voltage drop of rectifier tube and line. If 1.7V is taken, up2 = 14.889v, W2 = 0.837 turns.After adjusting the number of turns to an integerW1 = 15 turnsW2 = 1 turn4.3 winding currentIgnoring the exciting current, the effective values of the primary and secondary currents are calculated according to the unidirectional pulse square wave,4.4 winding form and temperature riseSince the effective value of the primary winding current is 0.895a, we use 8 layers of printed boards, each layer has 7.5 turns, 4 layers are connected in parallel, and then 7.5 turns are connected in series to form 15 turns of primary winding, as shown in Figure 4.When the primary winding works at full load, the loss is 1.07w.The effective value of the secondary winding current is 13.42a. Considering the limitation of skin effect penetration rate, we use two copper strips with a thickness of 0.3mm, which are processed into the shape shown in Figure 5 by CNC machine tool. When the secondary winding works at full load, the loss is 0.709w. One turn of auxiliary winding and one turn of feedback winding are made of double-sided plate, and the shape is shown in Fig. 6. Since the current is very small, the loss is negligible.According to the data, the iron loss calculated from the working frequency, BM value and working temperature is 1.296w.The appearance of the transformer after assembly is shown in Figure 7, and its heat dissipation area is s = 42.88cm2. Dissipated power per unit area q = 0.0524w/cm2. According to Fig. 8, the temperature rise is 42 . The measured temperature rise at full load is 34 .5. Filter inductance designIn the design of filter inductor, we use pq32 magnetic core and grind it into the shape and size shown in Figure 9.5.1 determine the number of turns of filter inductance WWhere l is the inductance required by the technical index. The leakage inductance in the case of atmospheric gap accounts for 20%. The core inductance only needs to be 0.8L. LG is the air gap length. Considering that the inductance requires good linearity, LG is taken as 1.8mm. AG is the equivalent section at the air gap, Ag is 1.2 times the magnetic core section, Ag = 1.267mm2.Substitute the above data to obtainW = 9.52 turns, rounded to 10 turns.5.2 determination of winding form and temperature rise calculationConsidering that the inductance current reaches 20a, only the ripple frequency is 230khz, and the main component is still DC current, a copper strip with thickness of 0.45mm and width of 4.5mm is used as the winding.Processed by CNC machine tool, the folded shape is shown in FIG. 10 and expanded as shown in FIG. 11.After calculation, the winding section is s = 2.025mm2, the winding length is L = 0.612m, and the winding loss PM = 2.7992w.Since B is very low during operation, the iron loss is ignored.The outline of filter inductor after assembly is shown in Figure 12. According to the overall dimensions, the heat dissipation area is s = 27.04cm2, and the dissipated power per unit area is q = 0.10352w/cm2. According to Fig. 8, the temperature rise is 65 . The measured temperature rise at full load is 48 .6. Analysis that the temperature rise of transformer (filter inductor) assembled on aluminum substrate with radiator can be greatly reducedBecause the contact area between the mounting bracket and the base plate of the traditional transformer is less than 1% of the overall area, and no measures are taken, the base plate is not included in the scope of helping heat dissipation. The good contact area between the plane transformer and the base plate can reach about 25%, which greatly improves the heat dissipation conditions.Heat conduction refers to the study of the way and effect of energy transfer of each part of the object in direct contact.We will discuss the effect of transformer assembly on aluminum substrate with radiator. The following conditions must be known:The theoretical temperature rise of transformer is 42 .After the transformer works at full load for several hours, the actual temperature rise of the bottom surface in contact with the aluminum substrate is 29 . The surface temperature rise of the radiator in contact with the cold plate is 27 .According to the conversion of 1 kW · H = 859.8 kcal, the total loss of transformer is 2.051 w · H = 1.763 kcal.Heat Q derived from heat conduction engineering calculation under stable working condition of multi-layer flat wall:Where: t1-t5 is the temperature difference of multi-layer surface wall of 2 . Rr1... RR4 is the total thermal resistance of multilayer flat wall (· H / kcal). Is the thickness of flat wall of each layer (m). Thermal conductive adhesive 0.0001, copper foil 0.00015, medium 0.00015, aluminum substrate 0.002. Is the thermal conductivity of each layer of flat wall (kcal / (m · h ·). Thermal conductive adhesive 0.194, copper foil 330, medium 0.26, aluminum substrate 204. A is the contact area between the bottom of the transformer and the flat wall 0.00104m2.Substitute the above data to obtainQ=0.3873(kcal)That is, the aluminum substrate with radiator transfers 21.96% of the total loss of 2.051w of the transformer, so it is reasonable to reduce the actual temperature rise by about 20%.In the same way, the effect of aluminum substrate with radiator on filter inductance can be calculated, which will not be repeated here.7. ConclusionThe transformer and filter inductor designed above have passed the electrical performance test, high and low temperature cycle test and high and low temperature storage test, and their performance meets the requirements.Through the transformer and filter inductance designed in this scheme, the following conclusions can be drawn:The folded copper strip processed by NC machine tool not only meets the high frequency limited by the penetration rate of skin effect, but also has a rectangular section. In addition, the copper strip surface is insulated with paint, which greatly improves the utilization rate of window holes. Compared with manual winding, the winding of folded copper strip, multilayer printed board and double-sided board has good consistency of distribution parameters and is convenient for circuit debugging.For switching transformers and filter inductors with operating frequencies above 200kHz, they can be designed into small planarization, and their height can be reduced to the same order of magnitude as components such as integrated circuits and capacitors. They can also be assembled on aluminum substrates with radiators. With the help of radiators, the temperature rise can be reduced by more than 20% under the condition of the same dissipated power.In case of mass production, the magnetic core shall be redesigned as required to increase its bottom area and make the window more reasonable, and the temperature rise and size of transformer and filter inductor will be further reduced.
How to Use a Asus Laptop Keyboard: 5 Key Tips You Should Know
How to Use a Asus Laptop Keyboard: 5 Key Tips You Should Know
The introduction of asus laptop keyboardIf you need to use your laptop as a gaming device, you should learn how to use it properly. With that in mind, I'll try to explain how to use your laptop as a gaming device. You may also want to check out these other good places to learn how to use your laptop as a gaming device: www.hackedpda.It is hard to imagine how asus laptops will replace traditional keyboards. However, it is clear that there will be more change in the future. If you are thinking of buying a new laptop, then you should go for a desktop one. This is because desktop laptops are cheaper than the laptops that are made of plastic and metal. Also, they are easier to operate and work well than the laptops that are made of plastic and metal.Asus laptops have started to be used in many places around the world. And they are also quite popular in Japan. So, if you are planning to buy a new laptop, then you should know that there are many different models of Asus laptops available in the market. If you are looking for a good laptop for your daily use, then you should go for the ASUS Laptop.Asus has launched the world's first ASUS Laptop with built-in WiFi. It is called the ASUS Numba and it is a notebook that can do things that most people would not be able to do. The Asus Numba is an operating system that allows users to use their computers to connect to the internet and perform various tasks on the go. The ASUS Numba has several features that will make it easy to use your computer to connect to the internet and perform various tasks on the go.It is possible to use the same key combination on two keyboards. Asus provides a large number of keys that are compatible with different products. In addition, you can choose from several unique and interesting combinations. If you want to make your own key combinations, there are plenty of websites that will be able to help you with this task. You can find more information about keys on www.asus.com.The specifications of asus laptop keyboardAsus has come up with a good idea to make their own keyboards. It is easy to use and you can buy them in different colors and designs. Asus also makes some more sophisticated keyboards that are great for playing games and working on your computer. Asus offers its own version of the Xbox One that is compatible with both Windows 10 and Windows 8.1. This means that you can use it to play any type of game on your computer.We don't know if the keyboard has any specification that would make it different from the previous generation. The good thing about using an alternative to standard keyboards is that it's cheaper and easier to make. This means that if you're going to use a new keyboard, you can go with something that's more compatible with your computer.We can get asus laptop keyboard with high quality and low price. We can get asus laptop keyboard with high quality and low price. We can get asus laptop keyboard with high quality and low price. We can get asus laptop keyboard with high quality and low price. We can get asus laptop keyboard with high quality and low price. We can get asus laptop keyboard with high quality and low price.Asus is now known as a household name in the industry. They are known for producing high quality laptops and workstations that are very popular with both professional and hobbyists. The good thing about Asus is that they have come a long way since they were started. They have become more advanced and better than their predecessors. It is also true that they have made some great innovations in the form of gaming laptops and tablets. There are many more features that Asus has to offer than any other laptop manufacturer.Related popular brands in the asus laptop keyboard industryAsus has now released the new version of its iMac, and it is pretty impressive. Asus's iMac is a great desktop computer that has all the features you would expect from a desktop computer. You can use it to write, edit, play games, work on other projects, and more. The iMac is one of the most affordable desktops you can buy today. It is small and light and easy to carry around. You can also use it to do anything you need to do with your computer. The iMac is very versatile and easy to use.The first generation of ASUS is now available in all major markets, and its name has become synonymous with quality and innovation. There are many other new products that have been launched recently, including the Asus K3 and ASUS Vivobook. It is also worth noting that ASUSs latest line of high-end laptops will continue to be produced by its division, which includes its motherboard and memory series. In fact, ASUS has always had an excellent reputation for producing high-end products, and it is no longer just a matter of good product names.In order to be able to make your choice of products you need to know what are the most popular brands in the asus laptop keyboard industry. In order to make your choice of products you need to know what are the most popular brands in the asus laptop keyboard industry. In order to make your choice of products you need to know what are the most popular brands in the asus laptop keyboard industry. In order to make your choice of products you need to know what are the most popular brands in the asus laptop keyboard industry.Asus Laptop Keyboard is one of the most famous and well-known brands in the asus laptop industry. The brand has been continuously producing high quality laptops for many years. Asus laptops are also known for their exceptional performance and features. They are considered to be some of the most comfortable laptops on the market. They also offer great battery life. The brand also offers high quality gaming laptops that can be used for various purposes. Asus laptops are well-known for their powerful processors and screen sizes.The benefits of asus laptop keyboardAsus is an excellent brand name that has become very popular in recent years. The asus laptop keyboard is one of the most well-known brands in the market. Asus is famous for its quality and affordable price. There are many good reasons why people choose asus laptop keyboard. It is easy to use and cheap to buy. It is very durable and long lasting. Asus laptop keyboard is an excellent choice for anyone who wants to be more productive and also want to have a better typing experience. Asus laptop keyboard is known for its high quality and it is easy to use.While you are probably thinking that this will be easy to do, it is actually very difficult to do. This article will show you how to do it in a very simple way. It is important to know that the keyfob and the keyboard are not attached to the computer, so you can just press the keys and wait for the sound to come on. In order to use the keyboard, you have to press the right button on the keyboard.With a beautiful desktop experience, you can do all the things you want to do with your laptop. You can take pictures, open programs, work on Word, edit documents, watch videos, send email, and more. And with its top notch screen, it's easy to keep up with your day. The screen size is great for a full-sized desktop computer. And the wide-screen viewing makes it easy to see everything you need to see.If you need to use your laptop as a touchpad, then it is best to buy a touchpad. It is better to buy a touchpad than a mouse because the touchpad will make your computer more responsive and will also be easier to use. It is better to buy a touchpad than a mouse because the touchpad will make your computer more responsive and will also be easier to use. You can use your laptop as a touchpad by placing it on your desk or in your bedroom.
What Is the RF Connector_ RF Connector Classification and Specification Introduction
What Is the RF Connector_ RF Connector Classification and Specification Introduction
The RF connector is connected with coaxial cable, microstrip line or other RF transmission lines to realize the electrical connection, separation or transfer of different types of transmission lines. It belongs to mechatronics products and acts as a bridge.The model of RF coaxial connector consists of main name code and structure code, separated by short horizontal line "-". Main name code the main name code of RF connector adopts the international general main name code, and the naming of different structural forms of specific products shall be specified in the detailed specification. Structure type code: structure of RF connector.2 Classification of RF connectors1) According to the connection interface structure, it is divided into:Bayonet type (inner bayonet, outer bayonet): BNCThreaded type (right-hand thread, left-hand thread): L29 (7 / 16), N, F, TNC, SMA, SMC, SSMA, SSMB, FME, L9 (1.6 / 5.6), 7mm, 3.5mm, 2.4mm, K (2.92mm), 1.85mm, 1mm;Push in type (in-line, self-locking): SMB, SSMB, MCX, MMCX, SMP, SMI, BMA, SAA;Flanged:2) Classification by size:Standard type: UHF, N, 7 / 16, 7mm;Small: BNC, TNC;Subminiature: SMA, SMB, SMC, MCX, BMA, SAA, 3.5mm;Micro: SSMA, SSMB, MMCX, 2.4mm, K (2.92mm), 1.85mm, 1mm;3 Main specifications of RF connectorImpedance: almost all RF connectors and cables are standardized to an impedance of 50 . The only exception is generally 75 system, which is usually used for cable TV installation. It is also an important RF coaxial cable connector with matching cable characteristic impedance. If not, a discontinuity is introduced and loss may result.VSWR (voltage standing wave ratio): ideally, it should be unity. Good design and implementation can keep VSWR below 1.2 in the range of interest.Frequency range: now most RF work in the range of 1 to 10GHz, so the connector must have low loss in this area. For cases above 10GHz - there is a lot of work now in the 10 to 40GHz range - there are newer connectors to choose from. They are expensive because it is the cable itself.Insertion loss: This is the connector loss in the frequency range of interest. Losses are usually between 0.1 and 0.3 dB. Determining how critical per watt (or fractional Watt) is in most designs, even such a small loss must be minimized and included in the link loss budget. It is especially important when the signal strength and signal-to-noise ratio are low.Operating cycle: how many connection / disconnection cycles can be connected and withstand and still meet their specifications? This is usually in 500 or 1000 cycles. For threaded connectors, the tightening torque specified by the supplier is an important factor in maintaining performance and reliability.Power: power processing is determined by two resistance losses (heating) and insulation breakdown. Although even decades of design has been mainly pre-processing tens of watts, today's design community focuses on low-power devices, such as mobile phones, Pico cellular and millipico cellular base stations, video interfaces, RF and gadgets. These are in the sub 1W range, so the connector can be much smaller and its power rating is a smaller constraint.
What Is a Compensating Cable_ How to Identify the Compensation Cable
What Is a Compensating Cable_ How to Identify the Compensation Cable
The compensation cable can be used to transmit electric energy on submersible motors with AC voltage of 500V and below. It has good electrical insulation performance under long-term immersion and large water pressure. Waterproof rubber sheathed cable has good bending performance and can withstand frequent movement.The function of the compensation cable is to extend the cold end of the multi-point thermal electrode and mobile thermocouple, and connect with the display instrument to form a multi-point temperature measurement system. The insulating layer and protective layer of the compensation cable are imported high-quality fluoroplastics, and the new overall continuous extrusion process is adopted, so that the product has excellent acid resistance, alkali resistance, wear resistance and non burning performance, and can be immersed in oil and water for long-term use. The service temperature of compensation cable is - 60-260 , which belongs to the contemporary international advanced level. Thermocouple compensation cable is suitable for multi-point connection of automatic temperature measuring instruments in electric power, metallurgy, petroleum, chemical industry, light textile and other industries, as well as national defense, scientific research and other departments.Compensation cable: not less than 12 times the outer diameter of the cable with armor and not less than 6 times the outer diameter of the cable without armor;Insulation resistance (20 ): PVC insulation shall not be less than 25m · km; FEP or pea insulation shall not be less than 100m · km;Flame retardant characteristics: Class A (tested according to gb12666.5-90)Executive standardExecutive Standards for production of compensation cables and wires: GB / t4989-94 and JB / t7495-94Service conditions1. Operating temperature:Heat resistant: up to 200 and 260 .General use: up to 70 and 105 .2. Minimum ambient temperature:Fluoroplastic insulated and sheathed cables: fixed laying - 60 , non fixed laying - 20 .PVC insulated and sheathed cables: fixed laying - 40 , non fixed laying - 15 .3. Allowable bending radius:a) The compensation cable with copper tape shielding shall not be less than 16 times of the outer diameter of the cable;b) The compensation cable of other structures shall not be less than 10 times of the outer diameter of the cable.Model of compensation cableCode name and meaningCompensation cableIntrinsically safe compensation cableHow to identify the compensation cable_ Difference between compensation cable and ordinary cableThe conductors of compensation cables are alloy materials with thermoelectric EMF transmission. Generally, compensation cables are connected with thermocouples.Ordinary cables are electrical products used to transmit electric energy and power supply, so cable conductors are mostly electrolytic copper or electrolytic aluminum with excellent conductivity.This is the most fundamental difference between the two.
Invest in Reliable Laptop Adapters!
Invest in Reliable Laptop Adapters!
Electronic gadgets which are available in the market or online must be bought from a reliable brand which has a reputation of selling good quality products. Sony is one brand which has a high reputation due to its consistent quality of products and services. There is no sector in which the company has failed to leave its mark among the people. The company started off more than a 50 years back and has never looked back ever. Sony is known for its contribution in telecommunication, computing and home appliances sector. There is no other company having such great range of products in its catalogue.The computing products starting from the desktops to the ultra thin laptops are quite popular among the people in various countries. The services and the products have its dealers and distributors throughout the world. The company has set various manufacturing units around the world to cater to the high demand of Sony products.In the laptop accessory category, Sony has made the most reliable laptop chargers and has the most trustworthy online supplier for the same and that is laptop charger factory. Anyone who wants to buy laptop charger in UK does not have to go to the market to make the purchase. The main reason behind this choice would be the reasonable laptop adapter price UK which the supplier offers.Online Sony laptop charger purchase lets the customer get the charger within a small period of time. The charger is segregated as per the specifications of the laptop model number and series number for which it is designed. Sony charger price is kept quite reasonable given its extremely high quality.The customer who once invests in the charger does not have to spend money in the product again and again. The services are free for one year due to its warranty. The online Sony laptop charger involves high tech features which make the use quite convenient. Laptop chargers price for all the other brands are also lowest here
Conscience Evaluation From Insiders: Which Is Better, Nank Nanka Or Shaoyin Bone Conduction Bluetoot
Conscience Evaluation From Insiders: Which Is Better, Nank Nanka Or Shaoyin Bone Conduction Bluetoot
As an evaluator in the sports Bluetooth headset industry, I have basically evaluated and experienced the sports Bluetooth headsets of mainstream brands in the market. Therefore, many friends will consult me before purchasing Bluetooth headsets, and the most frequently asked question recently is which is better in domestic sports Bluetooth headsets, Nank Nanka bone conduction Bluetooth headsets and Shaoyin bone conduction Bluetooth headsets?From the perspective of brand background, Nank is one of the fastest-growing earphone products in China. It is committed to presenting users with high-quality, comfortable, fashionable and beautiful cost-effective earphones. It has launched a variety of products based on Bluetooth wireless technology, including TWS Bluetooth headset, neck Bluetooth headset, bone conduction Bluetooth headset, and wireless charging treasure. Nanka bone conduction earphone has won the "Shenzhen gift" award for two consecutive years, becoming a benchmark leading the bone conduction earphone industry.In Shaoyin's words, Shenzhen Shaoyin Technology Co., Ltd. registered the consumer electronics brand aftershokz in the United States in 2011 and independently developed bone conduction audio technology. Through continuous technology, product iteration and subversive innovative design, it has completely changed the pattern of sports earphone industry and even traditional earphone industry, and is a pioneer of bone conduction earphones.Which is better, Nank Nanka or Shaoyin? I will use Nank runner pro and Shaoyin as800 for a comparative evaluation this time.Nanka runner Pro: distinctive original designShaoyin as800: rich colorsNanka's consistent style is low-key and simple. This time, it launched "Tango red", a bright color. Without much nonsense, let's take a look at the overall appearance design and visual sense. The earphone surface is made of skin friendly silicone material, which makes it feel very tactile. The charging mode is magnetic suction charging. This feature is different from South Carolina runner. There are four metal dots at the charging interface.Shaoyin's style has always been a variety of colors and styles. Shaoyin as800 also adopts skin friendly silica gel on the overall surface, which still has a good texture. However, a horizontal line can be clearly seen in the long strip hanging behind the aluminum alloy. Magnetic suction charging is also adopted, and there are only two metal dots at the charging interface. (Nanka runner Pro has 8g memory, and it needs two more songs to download) sound quality comparisonNanka runner Pro: sound quality strength does not lose 1000 yuan headphonesShaoyin as800: performance in line with priceIn terms of earphone quality and sound quality, Nank Nanka bone conduction earphone hired music masters to debug the bone conduction sound quality developed for sound quality performance for millions of times, and the most comfortable sound quality is presented. At the same time, the non porous sound leakage body design is adopted, combined with the exclusive ot closed 2.0 sound leakage reduction technology to reduce the sound leakage by 90%. When the volume remains unchanged, it can effectively reduce the vibration feeling of bone conduction sound and improve the sound quality without entering the ear. Use Hotel California to test and wear earplugs. After 20 seconds, the immersive feeling begins to appear. The sound is very three-dimensional. The accompanying drum will produce a strong sense of blow, and the sound has strong penetration. The effect without earplugs will be relatively poor.The exclusive premiumpitch 2.0 patented technology of Shaoyin is adopted to reduce the vibration problem, make the low frequency more delicate and the voice more excellent. Shaoyin as800 has two methods to reduce the leakage sound: one is to offset the external leakage sound with inverse sound wave, and the other is to reduce the vibration of the shell. The leaky sound killing Dragon technology is optimized to make the leaky sound wave offset more thoroughly, and reduce the leaky sound of bone conduction headphones to the level of semi in ear headphones. It can be said that the problem of leaky sound of bone conduction headphones has been basically solved. It is also used to test with this song Hotel California. After 20 seconds, the body begins to relax, and the sound is more delicate. The beating feeling of the drum is not as strong as that of South Carolina runner pro, but it is not much different. The vibration will be slightly smaller than the South Carolina runner pro.Nanka runner Pro: the most perfect auricle enjoymentShaoyin as800: comfortable to wearNanka runner Pro bone conduction earphone adopts the common non in ear design of bone conduction earphone. In order to overcome the comfort, a 300000 ear database has been established, which is not comparable to ordinary affordable earphones. At the same time, aviation grade silica gel material and damping technology are adopted, and there is no doubt about the comfort. In order to have both stability and comfort during sports, South Carolina runner Pro specially invited more than 300 sports experts to conduct the test, continuously adjusted the details for different sports scenes, adopted ergonomic memory elastic design, and then improved according to the adaptive shape of Asian head. While comfortable, it also has the stability of not losing major sports brands, which shows its great intention.The weight of the earphone is only 26G. Combined with the characteristics of bone conduction earphone, it is also very comfortable to wear for a long time. Wearing does not bring a sense of weight to the user, and the rear hanging wearing method also conforms to the ergonomic design. It will not cause the shaking of the headset even in the process of intense sports. It is very suitable for use in sports scenes, and the rear hanging design has little impact on the sound quality.Nanka runner Pro: top configuration of bone conduction earphoneShaoyin as800: IP67 professional waterproof and dustproofNanka runner Pro adopts the non porous sound leakage fuselage design, combined with the exclusive ot closure 2.0 sound leakage reduction technology to reduce the sound leakage by 90%. When the volume remains unchanged, it can effectively reduce the vibration feeling of bone conduction sound and improve the sound quality. Moreover, it does not need to enter the ear. It is also equipped with ip8 grade 8 waterproof, which can be used for swimming and diving; Earphone 8g large memory card can store 1500 music; 33g lightweight body, combined with a new generation of damping technology, the same volume, less vibration and more comfortable to wear; Bluetooth 5.0 chip makes the signal stable as wired; 16mm large dynamic coil unit and other thousand yuan headphones.Shaoyin as800 adopts Bluetooth version 5.0, which is highly anti-interference. 26G ultra light weight, whole body skin friendly silicone, 8-hour strong endurance, all day comfort and all day company. The professional protection level of IP67 and the holeless body created by integrated technology help you enjoy every movement. Amazing sound quality upgrade, 30 tilt patented technology, reduce vibration and increase volume; PremiumPitch2.0 Patented technology, fine bass, full if and penetrating treble. LeakSlayer Patented technology reduces sound leakage, takes care of privacy and avoids sound leakage.After reading this article, I believe you have a good understanding of Nank bone conduction Bluetooth headset and Shaoyin bone conduction Bluetooth headset? I should already have a certain degree of understanding. In terms of cost performance, although the price of Nanka runner Pro is 899 yuan, the configuration will be better than Shaoyin as800 with the price of 1298. There is little difference in performance and different opinions on sound quality. Which is better? Welcome to express your views
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