Stock n st usually refers to the stock symbol of a company. A ticker symbol is a series of letters and numbersWritten to represent the company's stock traded on the stock exchange. n stands for the name of the company's stock exchange. For example, n might stand for the Nasdaq stock exchange and st might stand for the NASDAQ Global Select Market.
will mark the stock n on the first day of listing to let investors know that it is a new stock; When st is marked on the stock, it represents the loss of the domestic listed company for two consecutive years, which is special treatment, and then *ST shares refer to the stocks of the domestic listed company that have lost money for three consecutive years. Users should be cautious when buying stocks marked by st and face higher risks.
NThe magnetic field is generated through the coils of the sending and receiving ends to realize the wireless transmission of electric energy. This way the charging efficiency is higher, but the transmission distance is relatively short, usually within a few centimeters.
2, wireless charging methods are electromagnetic induction, magnetic resonance, electric field coupling and radio wave transmission, wireless charging of mobile phones mostly uses the principle of electromagnetic induction. Electromagnetic induction wireless charging, when the current of the power supply through the coil (wireless charger's power supply coil) will generate a magnetic field, other unenergized coil (mobile phone side of the electric coil) close to the magnetic field will generate current, charging the mobile phone.
4, electromagnetic induction. This is the most common wireless charger working mode, it uses the principle of electromagnetic induction, through the primary and secondary coil between the electromagnetic induction to generate current, so as to achieve the energy in the space of the transfer; This kind ofThe wireless charger implementation method has been promoted by the wireless charging Alliance.
1, operation method: If you need to charge the phone directly, buy a wireless charging disc, then put the phone on the charging disc, turn on the power to charge; If you need to use wireless reverse charging, open the system setting page of the phone, enter the battery setting page, turn on the wireless reverse charging, and then put the device supporting wireless charging on the back of the phone to charge.
2. Huawei matThe e30 supports wireless reverse charging and OTG reverse charging. Through the wireless reverse charging function, devices that support the Qi wireless charging protocol can be charged. Reverse charging Tutorial Click to open [Settings] on the desktop of your phone. Under the Settings menu, find and click on [Battery]. Turn on the switch on the right of [Wireless reverse charging]. Just place the two phones back to back.
3. Take Huawei Mate30 mobile phone and EMUI0 system as an example. First of all, open the Huawei mobile phone system [Settings], then click [battery], and then turn on the switch on the right side of [wireless reverse charging] to protect the device to be chargedKeep the device on, and connect it to the center of the back of the phone (maintain stable contact). After the connection is successful, the device to be charged will show that it is charging.
4, Taking Huawei mobile phone as an example, the use of mate30 reverse charging is: only need to put the two mobile phones back to back together, Huawei Mate30 can charge another mobile phone, and can also wireless charge other devices that support the Qi wireless charging protocol. The Huawei Mate30 is a mobile phone from Huawei that was launched on September 19, 2019 in Munich, Germany.
5. Operating environment: Huawei mate30, HarmonyOS0.0, set 0.2. Find your phone's Settings and go to the Settings home page. Open the Settings home page and select Battery. Enter the battery interface, find the wireless reverse charging, turn on the function to solve the problem that the phone is out of power without a charger.
6, Huawei mate30 can be reverse charged, the user only needs to use an OTG line to reverse charge, the maximum output current 1A/5V when reverse power supply, not only that, Huawei mate30 wireless charging also supports reverse charging function.
More common SOCs are IDT, TI, COPO, purple light, etc. Most of the internal mobile phones are currently using IDT receiving schemes. Texas Instruments TI receiver chips used more in the first two years, and now they have downplayed the field of wireless charging. The integration of this chip is high and the efficiency is high, but the cost of a single chip is high and some additional functions cannot be added.
The most used receiver is Ti's chip, about 12 pieces. There are many options for launching,We are one of them.
AP45851 package size is small, the use of QFN24 package, strong heat dissipation, in 10W applications can also be fast heat dissipation. With its complete wireless charger performance, the AP45851 is the ideal choice for customers.