Today's alternating current (ac) unites the country, and direct current (dc) is quietly brewing a revolution, and the key is already ordinary USB technology. This will not only bring a revolution to the power industry, but also better improve power efficiency and even promote the development of the Internet of Things. Various cables, incompatible connectors, and various adapters are trials for travelers. Edison's Revenge: USB or power will lead to today's revolution, even more dramatic changes. Starting in 2014, USB cables will be used for larger electronic device power supplies. In the long run, this will change the power of homes and offices, not only saving costs, but also improving efficiency. Even USB inventor, Intel engineer, Jay Bart (AjayBhatt) did not expect this technology to have such a large amount of energy. He developed the main destination of this interface, which is a complicated step to reduce the number of peripherals and computer connections. Different cables are required for keyboards, mice, speakers and other peripherals, and different drivers are usually installed. The main task of USB is to help computers and devices to communicate and negotiate. Bart, he created a new charging system. Although the maximum capacity of USB charging current can reach 10 watts, which can barely use the device, it has become the default charging mode for small electronic devices such as mobile phones and e-readers. Some mobile phone manufacturers no longer provide power adapters in sales. Some more creative inventors also introduced USB power fans, mini refrigerators and toy rocket launchers. Next year's new standard is called USBPD, which can bring greater flexibility to the technology and expand the charging capacity to 10 times the current: up to 100 watts. Simon Daniel (SimonDaniel) is the founder of Moixa Technology, and he is now using a prototype of the USB port of an enhanced laptop battery in his London office. The low-voltage LED desk lamp office also uses the same route. The same is true for computer monitors, printers and desktop computers. Only the microwave oven, kettle and electricity consumption use traditional power. Reversing this trend may herald greater changes and may trigger a revival of direct current (dc), making it the preferred choice for lower and lower charging of home and office equipment. Since Nikola Tesla was defeated after Thomas Edison, direct current (dc) has long been suppressed by alternating current (ac) in the electronic world. There are many reasons for Tesla's victory, but one of them is because the technology at the time made it easier to switch different voltages between different versions, making it a better transmission and distribution system. But the trend may be reversed soon. The conversion of alternating current into direct current (dc) to the power supply of transistors (which is the core of all electronic devices) is very complicated, and the most common method is to use a power adapter. These ubiquitous small boxes are now very cheap and very light, but they are not very efficient. They usually take a little bit to turn into heat. And regardless of day and night, regardless of the price of this equipment, it will keep running. So a better way is for Daniel to use that kind of DC network, which is suitable for all home and office electronic equipment. So the USB cable has a bigger place. They can not only transmit current directly, but also transmit data. This means that it can set the priority between power equipment and power equipment. For example, when a laptop is used to charge a mobile phone, "Computer, so to speak, I need to start the hard drive now, so don't charge it in the next 10 seconds." Bart said. With the new standard's variable voltage and high power brings more possibilities, and even introduces some new functions: let electric power develop in any direction. This brings another advantage. The low-voltage DC grid is well compatible with solar panels. The latter can generate different DC power at different times, and is cheaper and cheaper, and can even be installed directly on windows or roofs. Although it is not easy to place solar power on the AC grid, the energy model is suitable for low-voltage DC local grids. When the sunlight is strong, it can help all your laptops, mobile phones and electronic devices. The advantages of this model can bring benefits to the home or office. If you have any large central battery network connected to the grid, self-charging at night when the electricity price is cheaper, the effect will be better. But the real advantage will be that the DC grid integration is more obvious in construction. Collect various supply, demand and storage, which can be transformed into a "smart grid"-more flexible and economical than the existing p model.
