Wireless charger refers to the use of electromagnetic wave induction principle for charging equipment, the principle is similar to a transformer. There is a coil in the sending end and the receiving end. The sending end coil is connected to the wired power supply to generate an electromagnetic signal, and the receiving end coil senses the electromagnetic signal of the sending end to generate a current to charge the battery. The wireless charging system mainly uses the electromagnetic induction principle, and the energy transmission is completed through the continuous energy coupling of the coil.
Xiaomi 20W vertical wireless charger Jingdong open for sale, only 99 yuan! Xiaomi's new 20WThe vertical wireless charger, which is on JD's shelves today, has attracted the attention of consumers with its unique double coil design. This charger supports horizontal and vertical placement, whether it is a desk or a bedside table, it can be easily adapted to bring users a convenient wireless charging experience.
This circuit production is generally the use of pulses, to prevent coil overheating and short circuit at the power end need to use temperature detection and current detection and then real-time control of the pulse, of course, but also to protect the circuit.
Wireless charging base to increase the coil, or do not modify it, you increase the coil not only did not play a good effect but affect the speed of charging,Increasing the coil is equal to increasing the resistance, it will make the current slow, the coil is proportionally wound, too much or too little can not, the coil is wound less, there will be damage to the parts, resulting in parts burned spark, because do not be free to modify the wireless charging base.
Built-in three-dimensional structure, double coil design, can be horizontal and vertical mobile phone charging. Users can use the phone while charging. In addition, the millet vertical wireless charger is compatible with a variety of wireless fidelity, which can not only charge Xiaomi mobile phones, but also provide 10W power for Samsung, Apple and other mobile phones. The effective induction of wireless charging is 4mm, which can be used in a mobile phone caseEnjoy wireless flash charge.
Its unique design, the use of vertical double coil configuration, whether the mobile phone horizontal or vertical, can easily wireless charging, full of flexibility, with 27W power adapter, up to 20W fast charge power. This charger is highly compatible, whether it is Xiaomi 9 Pro, or Apple, Samsung, Huawei and other brands of mobile phones, you can enjoy different degrees of fast charging services.
1, not necessarily. Wireless charging systemThe electromagnetic induction principle is mainly used to make wireless charging coil , and the energy coupling through the coil is realized to transfer energy to make wireless charging coil . When the system works, the input end converts the AC mains power through the full bridge rectifier circuit into DC power to make the wireless charging coil , or use the 24V DC end to directly supply power to the system. After passing through the power management module, the output direct current is converted into high-frequency alternating current through the 2M active crystal oscillator inverter to supply the primary winding.
2, select high powerA frequency triode, such as a television tube. If the power is not large, you can choose the medium power tube, the field effect tube.
3, soldering iron, copper wire, resistor, transistor, capacitor. That will do. So wireless charging is simple. But I suggest you don't do it yourself. It's all special materials. If you do it for fun, just make an oscillating circuit.
4, the loss of components affects the internal resistance of wireless charging fast and slow components, and the conversion efficiency of the system is high. The selection of components such as triode with small internal resistance can greatly improve the efficiency of wireless charging. However, with low internal resistance, the cost will be relatively high.
An iPhone's wireless charging receiver card. Wireless charging receiving card a compatible charger. A non-metal flexible ultra-thin casing.
The method of making a wireless charger is as follows: Attach the module to the place where the MicroUSB interface is compared. Connect the MicroUSB or Lightning port on the module to your phone. 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 yourselfMHM. Choose the most suitable position, be careful not to let the part of the connection line have the phenomenon of warping.
Soldering iron, copper wire, resistor, transistor, capacitor. That will do. So wireless charging is simple. But I suggest you don't do it yourself. It's all special materials. If you do it for fun, just make an oscillating circuit.
One of the self-wound coil is connected in the charging circuit, 555 output pin (third pin) is connected to an output tube (oneself at will, but to the high-frequency power tube) the output tube is linked to the self-wound coil, and the connected two coils are close (about 1 cm or so is sufficientThe charging current) Turn on the power supply can be wireless charged! The efficiency of this circuit is very low, because there is only half a wave peak high frequency so the loss is relatively large, but the principle is quite simple and easy to produce.
Yes, but not too long. Too long affects the overall performance of the machine.
Wireless charger uses the latest wireless charging technology, by using the magnetic field generated between the coils to transmit power, without the wire this medium, inductive coupling technology will become a bridge connecting the charging base station and equipment. The wireless charging system mainly adopts the principle of electromagnetic induction, and realizes the energy transmission through the energy coupling of the coil< p >