"ICT, Huawei, OPPO, vivo, Xiaomi led the launch of the" Mobile Terminal Fusion Fast charging Technical Specifications ", which was strongly supported by many terminals, chip companies and industry partners such as Honor, Sillijie, Ruixin Micro, Lihui Technology, Angbao Electronics, and Electric Cool Network.
Our earliest mobile phone charger is OPPO, charging 5 minutes, two hours of talk this kind of advertising slogan. Even today OPPOCharging devices for mobile phones are also ahead of other technologies. The battery that needs to be equipped with the charging power of the mobile phone is also a big problem. Therefore, domestic mobile phone manufacturers have launched TYPE-C interfaces. The advancement of this technology makes the charging device interface unified and more standardized.
Compatibility difference: Super fast charging technology is generally used in the market, and flash charging technology is mainly adopted by vivo and OPPO. This leads to compatibility issues. The compatibility of super fast charge is high, even if there is no charger, the use of other fast charging appliances can also achieve fast charging. However, flash charging requires the use of specificAdapters, otherwise not only can not achieve fast charging, but also may have a negative impact on battery life.
The flash charge of oppo and vivo is not common, and the flash charge technology of oppo and vivo is different, so it is not common. oppo mobile phone flash charging technology is VOOC flash charging, VOOC flash charging is OPPO independent research and development of fast charging technology, and applied for 18 patents, the fastest charging speed increased by more than 4 times, is the world's fastest and safest mobile phone charging technology.
This article will introduce the development history and advantages of domestic mobile phone brands to help you better understand thisSome brands. From the initial mobile phone to today's smart terminal, the development of mobile phones has witnessed the rapid progress of science and technology. Today, we are in the 4G era, and the pace of the 5G era is also getting closer, bringing us a faster and more stable communication experience.
Entering the New Year, the mobile phone market is new one after another, we carefully selected Huawei, Xiaomi, OPPO and VIVO four brands of cost-effective mobile phones, to provide you with a detailed purchase guide. Whether you're a hardcore player looking for performance or a video enthusiast looking for a photo experience, you'll find it hereA favorite.
Required. Huawei mate30pro charger has wired and wireless two, mate30pro wired charger is a standard charger that supports 10V/4A or 9V/2A or 5V/2A output, with 40w wired super fast charge ability, you can buy a mobile phone.
The Huawei mate 30 standard charger supports 10V/4A or 9V/2A or 5V/2A output, and the phone supports a maximum 10V/4A super fast charge, compatible with 5V/5A or 5V/5A super fast charge, compatible with 9V/2A fast charge. The phone also supports 27W Huawei Wireless Super Fast charge and wireless reverse charging.
It is also compatible with 9V/2A fast charge, because an 18-watt charger is available, but the charging speed is slightly slower than the standard charger, because it is a normal fast charge, while the original charger is a super fast charge. The p30 does not support wireless charging, so you cannot directly use wireless chargingBattery charging, but you can buy a dedicated wireless charging case to achieve this function.
Required, the fast charge head is divided into three models: standard 5v1A, fast 5v2A (30% speed increase), and flash 9v2A (50% speed increase). Wired charging and wireless charging use the same fast charging head.
The charger model of Huawei mate20 is HW-050450C01, which is a maximum power of 25 watts of the charger, it to achieve three output power, respectively, 5V/2A 10 watts, 5V/5A 25 watts, 5V/5A 25 watts. Huawei mIn addition to the original charger, the ate20 can also use a fast charge adapter that complies with the QC protocol, but the original will be more secure and stable.
g903 with fine top mouse pad. The thinner the surface of the mouse pad, the faster the mouse photoelectric feedback speed and the higher the accuracy. The mouse slides on the fine surface, with less resistance and faster sliding speed.
Does the g903 have a special mouse pad for charging Logitech PowerPlay wireless mouse pad, just use thisBoth the G703 and G903 can be used to charge while playing. g903 with fine or rough mouse pad fine surface is relatively smooth, the mouse slides quickly. CHERRY grits that I play video games with. Slight resistance, pressure gun is very comfortable, more suitable for fine operation. It's also cheap. I have bought a 6mm thick mouse pad from Cerri before.
Of course, the G903 also supports wireless charging, which needs to be used with the GPOWERPLAY mouse pad to maintain sufficient power and achieve wireless ultra-long battery life. It is worth mentioning that there is a double mode speed roller, its smooth degree, used all good. With Logitech G HUBThe software can realize the full programming of 11 keys, as well as RGB light effect control, fully meeting the needs of players to customize.
The icemat mouse pad launched by Cerre has excellent positioning performance and extraordinary appearance. However, due to the mechanical grinding of the glass surface, the foot pad at the bottom of the mouse has extremely serious wear phenomenon during use. In order to avoid excessive wear of the foot pad, Cerre has attached two foot pads made of woven materials in the packaging of the icemat mouse pad. It is used to avoid damage to the mouse chassis caused by excessive wear of the original foot pad.
1, Logitech GPro is Logitech's excellent wireless mouse, which has up to 12500DPI, standby time of more than 65 hours, Logitech is well-worthy of the flagship mouse, its charging steps are not complicated, only need to use the purchase of the mouse attached cable, and with the appropriate charging output head, you can directly charge.
2, can be charged while using strictly speaking, dog butt King 2 is also a dual-mode mouse, can be wireless and can be used while charging, but you do not supportWireless charging, I endure, but even TypeC port is not, the versatility is worse GPW full name is "Logitech GamingProWireless", I bought is recently listed PR.
3, Logitech prowireless how to use: First, open the "Bluetooth switch" at the bottom of the mouse, as shown in the picture. After turning on the mouse Bluetooth, you also need to turn on the computer Bluetooth. First press the keyboard "win i" to open the Settings. Then open the Settings "Devices" and click on the right "Add Bluetooth or other device" and finally put the mouse and computer together to connectThe connection is complete and ready to use.
PWM: Pulse width adjustment Step 1: Draw a periodic square wave; Step 2: Find the midpoint of the time interval on both sides of each pulse; Step 3: Average each pulse to the middle point of the time interval on both sides, and the result should be that the pulse waveform becomes a stepped waveform; Step 4:The selected waveform can be obtained by smoothing the step waveform. The actual AC measurement is also the effective measurement, and the average process is similar, so it is easier to understand.
The peak 1V sine wave is obtained. The more parts you divide the positive half of a sine wave, the faster the charge the closer the wave pattern is to the sine wave. It is usually enough to divide a complete sine wave into 40 parts. The whole process can be understood as A/D conversion inverse process. The voltage value of each charging section in the program is placed in the table, and the charging pulse width is determined by the voltage value. However, the maximum width cannot be higher than the width of each sine wave, and the charging process can be completed.
Make the MCU output high and low levels, can form different pulse width pulse waves, and then through the RC circuit smooth filtering, there will be different high and low voltage signals. This makes it possible to approximate sine waves or other waveforms.
First look at the principle of AVR MCU to generate PWM (51 to use A/D and triangle wave) : AVR MCU chip has a timing/counter with 16-bit PWM function. In normal mode, the counter keeps adding up, reaches a maximum value (TOP=0xffff), overflows, returns to a minimum value of 0x0000 and starts over. When the PWM function is enabledThat is, in the fast PWM mode of MCU, the duty cycle of output PWM wave can be changed by adjusting the value of OCR1A.
is also adjusted by adjusting the frequency of the sine wave. No DA... or similar to the sine wave, the output value is converted into binary through the algorithm, and then sent to the IO port square wave: this is the simplest, the IO port timing switch high and low levels can be, you set the time will become your output frequency.
There are many ways to convert square waves into sine waves: The use of D/A conversion chips to convert digital signals into analog signals. As a result, the Xiaomi 9 original charger can be backward compatible with the following fast charger models, such as Xiaomi Mi Mi 5. Mi 9 charger is USB-A port, support USB PD requires USB-C port; In addition, the built-in protocol chip of the Mi 9 charger wireless charging programming does not support USB PD, in summary, the Mi 9 charger does not support the USB PD protocol.
· Further, if the re-plug is still the same, try updating the system version to see if it can solve the problem, if it still can'tTo solve, you can only go to the after-sales to see if there is a hardware problem, such as the battery or the motherboard wireless charging programming , to detect the reliability. Mi 9 charging contact poor ①, on the above Mi 9 charging does not contact poor problem is such, first of all to check whether the original charger is normal (should consider replacing the test if necessary).
Xiaomi mobile phone should be charged for the first time to ensure a safe charging environment, use the original charger and data cable, and full to 100%. First of all, for the wireless charge programming is correctTo ensure the health and life of the battery, the environment for the first charge should be safe and stable. This means that wireless charging programming You should avoid charging in a hot or cold environment, and try to choose a place where the indoor temperature is suitable. At the same time, it should be ensured that the phone is not covered by its wireless charge programming other items when charging, in order to maintain good ventilation.