2 WhatIs it wireless charging? What is the principle of wireless charging? 1 No visual wire charging, using electromagnetic wave charging. 2 Magnetic resonance is used to transfer charge in the air between the charger and the device for charging.
3, the disadvantages of wireless charging efficiency is slightly lower: the general charger also has a transformer, but the wireless charging transformer composed of the transmitting coil and the receiving coil is limited in structure, and the energy transmission efficiency is theoretically slightly lower than that of the general charger. Slow charging speed: Due to the current mobile phone and other receiving devices, most of the pcb wireless charging the input powerTherefore, the charging speed is slow.
4, electromagnetic induction: the primary coil of a certain frequency of alternating current, through electromagnetic induction in the secondary coil to produce a certain current, so as to transfer energy from the transmission end to the receiving end. It is the first generation of mobile phone wireless charging, and the technology is mature, but it can only be single-to-single short-range charging (qi standard, within 1cm, within 5 watts), rather than single-to-multiple charging like WiFi.
1, for example, 6-1For the 0-layer memory module PCB design, it is better to choose 10/20mil (drill/pad) pass hole, and for some high-density small-size boards, you can also try to use 8/18Mil pass hole. Under the current technical conditions, it is difficult to use a smaller size of the hole (when the hole depth exceeds 6 times the diameter of the hole, it is impossible to ensure that the hole wall can be uniformly plated with copper); 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; inravg is in the range of 0.08~ 0.4m, and 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 technologies (such as wire winding coils and PCB coils) generally specify quality factor values.
3, no matter what electronic products according to the reason, the fewer PCB layers, the worse the electrical performance. On the contrary, the more PCB layers, the better the electrical performance. In electronic products, the more PCB substrate layers, the better. Because the number of layers of the PCB boardMore, the more solid the foundation of the motherboard, the less interference between the signals will be able to ensure that the electronic components on the motherboard work normally without interference in harsh environments, and the longer the service life.
4, most of the host board is a 4 to 8 layer structure, but technically, the theory can do nearly 100 layers of PCB.
5, if some board guide holes appear on the front of the PCB board, but can not be found on the back, then it must be 6/8 layer board. If the same pilot hole can be found on both the front and back of the PCB board, it is naturally a 4-layer board. However, many board manufacturers now use another type6 Wireless charging board how to remove '> MG 6 wireless charging board how to remove 1, the detailed steps of dismantling the MG 6 wireless charging board: First of all, we need to prepare a screwdriver, align the fixing screws at the four corners of the panel, loosen and remove them one by one, in order to enter the next step. Next, carefully lift the shielding cover on the front of the wireless charger to ensure smooth operation to prevent damage.
2, first, open the central armrest cover of the wireless charging board of Lynk & Co 05. Second, hold the wireless charging board with your hand and lift it upward from an Angle until it is removed from the upper button of the storage box. Finally, pull out the plug on the wireless charging board connector to complete the disassembly of the wireless charging board.
3. Open the passenger compartment and separate the knobs on the left and right sides. Remove the damper and support pin from the glove box. Remove the glove box, use a screwdriver or removal tool to remove the side cover of the instrument panel, and use a screwdriver to remove the lower cover of the instrument panel. Remove the drawer by unscrewing the mounting screws and removing the chrome strip on the instrument panel, unscrewing the mounting screws and removing the side trim strip on the instrument panel, unscrewing the mounting screws and nuts and removing the glove box cover.