China is the world's largest wireless mobile communications market, with 1.3 billion people talking about a smart phone or even multiple smart phones, and the battery life has a huge impact on the experience. The demand for wireless charging products that are convenient, easy to use, interoperable and compatible will grow at a geometric level. The great potential of the wireless charging industry can also promote Chinese companies to actively participate in and research this market, effectively improving the product breadth and competitiveness of enterprises. And because China has a strong cottage market, it is expected that the development of wireless charging technology in the Chinese market should be rapid.
Electronic devices such as wireless mice, wireless keyboards, and wireless routers have been widely acclaimed in the market. These wireless devices have made us more convenient to use, and have also made electronic devices more fashionable, technological and environmentally friendly. In recent years, with the rapid development of mobile devices such as smart phones, mobile devices have become fiercely competitive, and wireless charging has served as a powerful weight in this competition. Wireless charging is a reform of the charging method. Although there are still many problems, it makes charging convenient and fast, and it can be used with the charger. In addition, the price is low, which is very attractive to users.
How to use Samsung wireless charger ----- how to use s8 wireless charger
In fact, the Samsung s8 wireless charging method is very simple, just connect the USB cable, and then plug it into the socket. When the phone is out of power or is about to be out of power, put the phone on the charger board and the charger and phone will instantly connect and charge. When charging, the LED light around the wireless charger will illuminate to show the status of use. In addition, the battery icon at the top of the phone screen will also show the charging status. When the phone's battery is fully charged, the LED light changes from a faint blue light to a green eye.
How to use the wireless charger----How to use the Apple wireless charger
Now Apple has not officially launched wireless charging. It is expected that the iPhone 8 will be equipped with wireless charging, but now there are some accessories that can be used for wireless charging. The wireless charging receiver is inserted into the charging interface of the iPhone to insert the wireless charging receiver into the charging interface of the iPhone; Then install the phone case, let the phone case press against the wireless charging receiver; then put it on the QI standard wireless charging mobile power to wirelessly charge.
The wireless charging circuit is composed of a power supply circuit, a transmitting circuit, a receiving circuit, and a charging circuit.
Wireless charger system block diagram 
Power supply circuit 
Transmitting circuit 
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