Principle of wireless power supply
Sometimes I feel that the wireless charging mobile phone is very magical, and I really want to know how it realizes wireless charging, so I collect a lot of information and finally understand the principle. If you have the same curiosity, you can have a look at it.
I. electromagnetic induction
The electric base and the mobile phone terminal have built-in coils respectively. When they are close to each other, the transmitting coil generates a certain current in the receiving coil of the mobile phone based on a certain frequency of alternating current through electromagnetic induction, thus transferring the point energy from the transmitting end to the receiving end, and then starting to supply power to the mobile phone from the charging base.
Because the principle is simple and easy to make, plus the promotion of Texas Instruments, Philips, Toshiba, Microsoft, Panasonic, Samsung, Sony, Qualcomm and other manufacturers, this is the most popular way on the market. However, wireless charging based on electromagnetic induction also has some disadvantages, among which the transmission distance is seriously limited.