4, no harm to mobile phones. The wireless charger uses the latest wireless charging technology through the use of coilsThe alternating magnetic field generated between the transmission of electrical energy, inductive coupling technology will become a bridge connecting the charging base station and equipment.
5, wireless charging is harmless to mobile phone batteries. The current wireless charger is the use of this principle, called inductive coupling technology, this technology is through the magnetic field generated between the coils, the electrical energy of a circuit into an electromagnetic transfer to another circuit in a technology.
6, wireless charging is usually not harmful to mobile phone batteries. Wireless charging converts electrical energy into special energy through electromagnetic induction and transfers it between magnetic fields to achieve charging of mobile phone batteries. This kind ofCharging method does not require the use of data cable, making charging method more convenient and safe. Under normal circumstances, wireless charging operates at a frequency below 1MHz and will not affect the phone's communication signal.
Wireless charging PCB Wireless charging box capacitor factory , the function is different, the required components are different. Requires Wireless charging box capacitor factory Components are wireless charging box capacitor factory : resistor, capacitor, resonant capacitor, resonant coil, MOS tube, control chip, protocol chip.
Control chip: manages 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: Generate high-frequency AC signals for wireless transmission. Coils: Used to generate or receive electromagnetic fields, are a key part of wireless charging.
The transmitting end is wireless chargingElectrical appliances, the receiving end is mobile phones and so on. There is a coil at the transmitting end and a coil at the receiving end. The transmitting end transmits energy through the control board and coil, and the receiving end receives energy through the control board and coil, so that wireless charging can be achieved. The following picture shows the charging situation of Samsung S6 mobile phone and Polopai Technology's wireless charging mobile power supply. The mobile phone can start charging when it is placed on the wireless charger, without charging through the USB interface connection.
connector: A component used to connect circuit boards. Filling: Copper coating for ground wire network can effectively reduce impedance. Electrical boundary: Ruler used to determine the circuit boardInch, all the components on the circuit board can not exceed the boundary. Through holes, mounting holes, wires, components, connectors, filling, electrical boundaries, etc.
The useless end of k.MCU should be connected to the high, or grounded, or defined as the output end, and the integrated circuit should be connected to the power supply and ground end, do not hang. l. The input end of the idle gate circuit should not be suspended. The positive input end of the idle op amp should be grounded, and the negative input end should be connected to the output end. m. Printed boards try to use 45 line wiring instead of 90 line wiring to reduce the external transmission and coupling of high-frequency signals.
1, wireless charging concept stock Wireless charging concept stock list Shuobide: A shares first into wireless charging wireless charging box capacitor factory Communication antenna leading company is the domestic communication terminal antenna leading enterprise. Shuobide (300322) is a professional manufacturer of wireless communication terminal antenna Wireless charging box capacitor factory , the main business for wireless communication terminal antenna research and development, production and sales.
2, the so-called wireless charging concept actually refers to wireless charging technology, which is called inductive charging, non-contact inductive charging, according to wireless charging box capacitor factory As far as I know, in the A-share market, the wireless charging concept stocks are: Tanaka fine machine, Aoxun, Jing Quan Hua, Lianchuang Electric and so on.
3, wireless charging is a hot track with relatively high attention in the near future, but many friends do not know what wireless charging concept stocks are, today's financial management Jun for shareholders friends sorted out the list of wireless charging concept leading stocks for your reference. Cloud Road Shares (68Annual report: Net profit of 90 million yuan, net profit growth rate of 428%, operating income of 3.9 billion yuan.
4, Aohai Technology: Main business: charger, mobile power and other intelligent terminal charging and storage products design, research and development, production and sales. Lishun Precision: Main business: Connector product development, production and sales. Xinwei Communication: Main business: mobile terminal antenna, 3G terminal antenna, module antenna, 3D precision molding antenna.
5, wireless charging concept stock (300446) : FPC electromagnetic shielding film can be used for wireless chargingElectrical equipment. Hengdian Dongmagnetic (002056) : Soft magnetic materials supply to Apple wireless charging field iwatch products. Triode (300001) : Invested 600 million yuan to establish Qingdao Triode (300001) Car charging Co., LTD., engaged in car charging system research and development and charging operation and other related services.
6, Apple wireless charging concept stocks are: Hengdian East Magnetic (002056) : Hengdian East Magnetic said on the interactive platform on September 6, 2017 that the company currently provides wireless charging disks to Apple.
2, charging equipment with electromagnetic wave induction principle, the principle is similar to a transformer.
3, this wireless charging principle is the same as it, but it is the resonance of the magnetic field, by adding a capacitor on the coil at both ends to form LC resonant electricityWhen the resonant circuit at the transmitting end oscillates at a certain frequency, the resonant circuit at the receiving end will also produce the same frequency oscillation to generate induced electromotive force, and charge after rectification and filtering, and the electrical energy will be transferred by the way of resonance on both sides.
4, in the power system, this principle allows two LC oscillating circuits to be coupled to each other at the resonant frequency, so as to achieve energy transfer. This principle applies not only to wireless charging, but also to the transmission of information on radios and mobile phones. Specific to the working principle of wireless charging, first of all, the mains is processed by transformer step-down and rectification filter, turnTo a DC voltage of about 21V, as the main power supply.
5, the use of LC filter, capacitor filter countermeasure method. How refers to what means or methods to avoid wireless charging and electromagnetic compatibility with external devices is the use of LC filter, capacitor filter countermeasure method, in ensuring the electromagnetic compatibility characteristics of wireless charging equipment has no evidence to rely on, can not guarantee the corresponding frequency band air wave order at the source.
1, Zhixu electronics is very good, wireless chargingThe ceramic capacitor number is complete, the parameter information is complete, and the manufacturer can also provide reasonable assistance.
2, wireless charger can charge Huawei capacitor pen. Because Huawei's pen supports wireless charging, as long as the pen is attached to the upper side of the tablet, it will automatically adsorb, and then wireless charging, to supplement the power of the pen. Wireless charging breaks the way that power transmission can only rely on direct contact transmission of wires, and belongs to non-contact transmission, which can avoid the problems such as contact spark sliding wear and explosion electric shock that may be brought about by contact power transmission.
3, no use, no capacitor you charge anything useless, becauseIn order not to charge it, it is first passed through the capacitor to the battery. Go after the sale to change the battery charging IC is good, a hundred dollars.
Electric field coupling wireless charging, does not use the coil for electromagnetic induction, but directly through the charging base and the capacitor formed between the electrical device to be charged in the high frequency electric field, that is, the use of the induction electric field generated by coupling two sets of asymmetric dipoles along the vertical direction to transmit power, this charging method has low cost, alignment requirementsThe advantages of low. But there are not many actual products.
The transmitting end is often multiple strands of silk-covered wire, multiple strands of thinner enameled wire or gauze wrapped wire wound inductors are used in relatively high frequency circuits, such as the magnetic antenna rod coil of the radio, the shortwave radio coil, the high frequency transformer coil of the liquid crystal display lighting circuit, etc., often use multiple strands of wire and wound.
A changing magnetic field will produce a changing electric field, a changing electric field will produce a changing magnetic field, and its size is related to their rate of change, and the rate of change of the sine function is another sine function, so the electromagnetic wave can spread out and feelThe generation of the voltage is related to the change of the magnetic flux, so the changing magnetic field inside the coil generates the induced voltage, thus completing the charging process.
Hello, about whether magnets will be used in the wireless charger. First of all, you must understand the principle of wireless charging, that is, electromagnetic induction, through the magnetic flux between the two coils is constantly changing, to transfer energy, and electromagnetic induction in order to make the coil magnet more concentrated, usually the core of these materials with large permeability to reduce energy loss, therefore, wireless charger inside do not need to use magnets.
Also built-in software control function