1. The cost of applying for CE certification is about 5000 RMB. The cost of FCC certification is also about 5,000 yuan. The cost of ROHS certification is determined according to the type of material to be testedWire charging st program , the types of non-metal and metal materials Wireless charging st program , the charge will also be different. Therefore, wireless st scheme , if there are more types of materials, the cost of the entire ROHS certification may be about 60,000 yuan.
2, FCC certification Wireless charging st program : The United States Federal Communications Commission (Federal Communication.FCC) is the United StatesAn agency authorized by the government to regulate radio, communications and digital equipment.
3, many radio application products, communication products and digital products to enter the U.S. market, all require FCC approval. The FCC Commission investigates and studies the various stages of product safety to find the best way to solve the problem, and the FCC also includes the detection of radio devices, aircraft, and so on.
Three contacts on the side of the X907 body provide a wireless charging connection point, which can be passed through the specialFixed charging protective case to achieve wireless charging; There is a receiving circuit in the charging protective case, which is connected with the three contacts of the mobile phone for charging. Wireless charging principle is completed by electromagnetic induction, X907 mobile phone hardware itself is no induction circuit, is through the charging protective cover (receive) and charging base (emission) to complete.
Wireless charging methods include electromagnetic induction, magnetic resonance, electric field coupling and radio wave transmission, etc. 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 be generatedMagnetic field, other unenergized coil (mobile phone end of the electric coil) close to the magnetic field will generate current, charging the phone.
Mobile phone wireless charging is achieved by using wireless charging technology, mainly in the following ways: Qi wireless charging: Qi is a wireless charging standard, many mobile phones and chargers support the standard. Wireless charging can be achieved simply by placing the phone on a charger or wireless charging dock that supports the Qi standard.
Electromagnetic induction The most common way of wireless charging is to use the principle of electromagnetic induction to generate current through the primary and secondary coilsPut the machine 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.
Find the Settings of your phone 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. Use the original charger and data cable: The charger and data cable designed by the mobile phone manufacturer can provide the most suitable for the mobile phoneThe current and voltage of the mobile phone can be better protected by using the original device.
The use method of Huawei mate30 wireless charging is as follows: The user only needs to place the Huawei Mate 30 series mobile phone on the wireless charging board, and the mobile phone will automatically enter the charging mode. Huawei Mate 30 series supports Huawei's 27W wireless fast charge and is also compatible with the general Qi wireless charging protocol; When the phone starts wireless charging, the screen will display a green ring with information such as a wireless charging sign and the current battery level.
To Huawei Mate30 mobile phone, EMUI0Take the system as an example. First, open the Huawei mobile phone system [Settings], then click [battery], then turn on the switch on the right side of [wireless reverse charging], and keep the device to be charged 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 indicate that it is charging.
1, S battery is a kind of alkaline dry battery, also known as 9V battery. thereofThe dimensions are 45mm x 25mm x 15mm, the voltage is usually 9 volts, and the capacity is 400 to 625 mah. Such batteries are commonly used in devices such as smoke detectors and wireless microphones.
Belkin: Belkin is a well-known manufacturer of electronic accessories, and its in-car wireless chargers are known for high quality and stable performance. Belkin's in-car chargers are generally simple in design, easy to install, and have safety features such as overcharge, overmild short-circuit protection. In addition, they tend to provide fast charging speeds, ensuring that the user's phone is fully charged while on the road.
HUAWEI: reliable quality, moderate price, support a variety of device charging, although the speed is not fast charging, but wireless convenient, suitableFor summer use. BELKIN: Stylish design, responsive, fine workmanship, fast charging, and non-slip protection. PISEN: high appearance level, light and portable, C port design is easy to use, and has good support for Samsung mobile phone wireless fast charging.
Next, we recommend the top ten car charger brands for you, including Philips, Huawei, Pinsheng, Xiaomi, UGREEN, BASEUS, Newmine, SAST, BULL and BoschSCH). Each brand has its own unique features and advantages, and consumers can choose according to their individual needs and vehicle models.
Car wireless charger brand recommendation: Belkin wireless charger: Belkin is a well-known brand of electronic products, its car wireless charger quality is reliable, strong compatibility, suitable for a variety of mobile phone models. Romos wireless charger: Romos is a world-renowned mobile phone accessories brand, its car wireless charger design fashion, high charging efficiency, and relatively affordable.
1, the more common SoC 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.
2, the most used is Ti's chip, about 12 pieces. There are multiple options for launchingWe are one of them.
3, the two charging box power management chips are different, AirPods Pro uses Texas Instruments BQ25116A, AirPods 3 uses NXP 610A3B. The wireless charging receiver chip adopts Broadcom 59356A2KUBG. In terms of MCU configuration, AirPods Pro uses ST ST STM32L476MGY6, and AirPods 3 uses STM32L496WGY6P.
4, try to choose more than 10W power: with the more technologyMature, more and more people pursue charging speed, buy a high-power wireless charger, the future software system upgrade can also be used. It is recommended that when purchasing wireless charging equipment, try to choose a wireless charger with a power of more than 10W.