1, for example, for the 6-10 layer of memory module PCB design, the choice of 10/20mil (drill/pad) hole is better, for some high-density small size boards, you can also try to use 8/18Mil hole. Under current technical conditions, it is difficult to use smaller holes (when the depth of the hole exceeds 6 times the diameter of the hole, it is impossible to ensure that the hole wall can be uniformly plated with copper).Wireless charging method ; For the power supply or ground wire hole, you can consider using a larger size to reduce the impedance.
2, in the range of ravg 0~ 0.08m, the output power increases first and then decreases with the increase of coil turns; In the range of ravg 0.08~ 0.4m, the output power decreases first and then increases and then decreases with the increase of coil turns. For a fixed operating frequency, the quality factor Q mainly depends on the shape and size of the coil and the material used. Standard coil technology (such as wire winding coils, PCB coils) is generally specifiedQuality factor value.
3, wireless charging PCB, different functions, the required components are different. The required components are wireless charging method : resistor, capacitor, resonant capacitor, resonant coil, MOS tube, control chip, protocol chip.
4, control chip wireless charging method : manage the entire wireless charging process, including voltage regulation, power control, communication and other functions. Power amplifier (PA) : Increases signal strength in order to transmit energy efficiently. Oscillators and modulators: rawA high frequency AC signal used for wireless transmission. Coils: Used to generate or receive electromagnetic fields, are a key part of wireless charging.
5, electric field coupling technology through wireless transmission of energy, although low energy efficiency, but the most convenient to use. The principle of wireless charging is similar to that of transformer, and the system design refers to the structure of transformer. Wireless charging products are mainly composed of the receiving end and the transmitting end, the transmitting end includes chips, oscillators, power amplifiers, coils, PCB, passive devices, electronic transformers, structural parts, etc., the receiving end is divided into two parts of the chip and module.
There is no need for wired charging and it is very slow. Charging without a wire may kill you, and it is not good for the mobile phone even if it is not used when chargingPlay mobile phone charging is not convenient slot can also plug a lot of things to buy a slot than buy a wireless charge more useful.
The principle of wireless charging is that the phone must be placed on a charging board when charging, and it can be charged as long as it is in the specified area. This is a kind of charging method with advantages and disadvantages, and some young people will choose to install such a charging seat at the bedside. If no one is home for a long time, there may also be some fire risk. This principle is very good, but sometimes it can feel very confusing.
Try to choose more than 10W power with the more mature technology, the moreThe more people pursue charging speed, buy a high-power wireless charger, and the future software system upgrade can also be used all the time. It is recommended that when purchasing wireless charging equipment, try to choose a wireless charger with a power of more than 10W.
To change an ordinary mobile phone to wireless charging, it is usually necessary to use a wireless charging receiver and the corresponding modification tool. Please note, however, that this modification may damage the phone or void the warranty, so it is recommended to proceed only after fully understanding the risks and consequences. Wireless chargingTechnology, which has grown in popularity in recent years, allows users to charge devices without having to plug in a cable. However, not all phones support wireless charging natively.
First, make sure your phone supports wireless charging. Connect the wireless charging pad and charging head through the data cable. Generally, you only need to ensure that it is above 10W. Place the phone on the charging pad, with the coil usually located near the camera. There will be a prompt after charging successfully. If your Huawei mobile phone supports wireless charging, after the wireless charger is powered, directly place the mobile phone screen facing up in the center of the charger or the position suggested by the manufacturer to charge it.
Click to open the Settings and enter the phone Settings interface. Tap to turn on the battery to enter the battery Settings screen. In the battery Settings screen, we click on Battery Health. On the battery health screen,We just turn on the wireless charging switch directly.
Mobile phones use wireless charging, you need to buy wireless charging base and wireless charging back shell to use. Usage: Connect the charger to the wireless charging base, then install the wireless battery back shell on the phone, and finally place the phone on the wireless charging base normally.
If you use a vivo mobile phone, you can refer to the following information: Wireless charger usage method: Connect the phone's standard charger and data cable to the wireless charger, and then put the phone in the center position of the left and right of the wireless charger baseMethod '> Self-made wireless charger method
1, self-made wireless charger 1: External module installation steps Attach the module to the place where the MicroUSB interface is compared. Step Connect the MicroUSB or Lightning port on the module to the phone. Steps If there is double-sided tape on the receiver, you can glue it directly to the back of the phone. If it doesn't come with it, you have to figure it out yourself. Step to select the most appropriate position, be careful not to let the part of the connection line warped phenomenon.
2, question six: How to do wireless charger Wireless charger isThrough the two coils coupling to the mobile phone, as long as there is coupling current can normally charge the mobile phone. Question seven: Self-made simple wireless charger transmitter is now common QI solution, you can search a lot on a treasure, find the basic module, and then built into their own products.
3, two meters temporarily impossible, personal production needs to consume a lot of power, the loss is also very large, centimeter level can buy their own on Taobao touchstone modification.
New energy vehicle charging precautions: vehicle charging system with high voltage, unauthorized modification of vehicle charging system components, vehicle charging equipment or touching damaged parts may lead to electrocution.
When charging, be sure to pay attention to the following: Ensure that the vehicle is parked in a ventilated and dry placeIn the environment, avoid high temperature or humidity affecting the charging. When charging, ensure that the device plug is tightly connected to the vehicle socket to prevent charging interruption due to loosening. Avoid charging when the battery is too low or too high to avoid compromising battery life. Always follow equipment instructions to avoid charging failures caused by operational errors.
Correct charging method for new energy vehicles: use vehicles and piles that meet national standards. Check whether the charging device is normal before charging. Use a charging cable to connect directly to a wall outlet. Try to avoid using patch boards. Avoid exposing the charging cable to sunlight and charging it at high power. New energy vehicle batteries can be divided intoTwo main categories, namely batteries and fuel cells.
The method of charging new energy vehicles at home is to use the car charger to plug into the 220V16A power outlet at home. Do not use "flying line charging", that is, use a plugboard to extend the socket near the body to plug the charger into the plugboard for charging and this method is very dangerous because the ordinary plugboard is easy to heat during the charging process, which can easily lead to fire, electric shock and other accidents.
1, technically speaking, wireless charging method , running while charging can achieve wireless charging method , there are two ways, one is wireless charging highway, the second is solar charging. The technology for wireless charging transmission is called "magnetic resonance coupling". The two copper coils are adjusted to the same frequency to form a resonance, and one is placed every few kilometers.
2, the electric motor of the electric vehicle can be converted into a generator in theory, but in fact, the electric vehicle can not achieve the function of charging while running. First, from the technical principleThere is no essential difference between the construction of an electric motor and a generator. An electric motor converts electrical energy into mechanical energy, while a generator converts mechanical energy into electrical energy. 3, although in theory, electric vehicles can be charged while walking, but in fact, there is little practicality in doing so. Electric motors and generators are very similar in structure, and through some mechanical modification, the electric motor can be turned into a generator to charge the battery, which is technically no problem. However, current technology cannot solve the problem of energy loss in the process of power generation, that is, power generation efficiency.
4, at present, there is no new charger canCharge as you go. Energy doesn't come out of thin air. It's more like a generator to recharge the batteries. Electric cars can be charged on the go, but the storage method requires the car to drive on the road and most of the road is downhill, or to refer to solar or wind power generation, or to install a diesel generator. But unless it's a long ride, none of these methods are economical.
5, electric vehicles can be charged while walking. But there is little practicality in doing so. Generators and motors are very similar in construction. If slightly modified and switched with the mechanical device, the electric motor of the electric vehicle can be turned into a generator to charge the battery, which is technicallyThere are no obstacles. However, the power generation process has energy loss (power generation efficiency), which can not be solved by current technology.