Application of electromagnetic induction wireless power supply
With the continuous development of wireless power supply, wireless charging technology has officially entered the application stage, but many users do not know how to use the wireless charging function of mobile phones.
The principle of wireless charging is actually to use the principle of electromagnetic induction to charge the equipment. The principle is similar to transformer equipment. A transmitter and a receiver are required. The transmitting device converts the current into electromagnetic signal, and then the receiving device converts the received electromagnetic signal into current again, which is the principle of wireless charging.
From the current wireless charging technology, there are three ways of wireless charging. One is electromagnetic induction, which generates current through the electromagnetic induction between primary and secondary coils; The other is the first radio used for space communication. It mainly depends on the circuit with efficient receiving performance to capture the radio waves in the air, and then convert them into electric energy; The last one is electromagnetic resonance, but this technology is not mature, is still in the laboratory development stage, and has not been applied to mobile phones.
The use of mobile phone wireless charging. For most ordinary users, wireless charging is still a new thing. Due to the lack of understanding of wireless charging methods, they do not know how to use mobile phones for wireless charging.
In fact, the way it is used is totally stupid. Although it involves electromagnetic and current conversion, they are all completed by equipment. Generally speaking, the wireless charger is disc, some are embedded and card slot type. However, either way, as long as the mobile phone has wireless charging function, as long as the mobile phone is close to the tray of the wireless charger, the mobile phone will enter the charging state.
However, due to the limited transmission power of the charger, most wireless chargers need to be closely connected with the mobile phone, and the closely connected part depends on the location of the radio receiving device. As we all know, most mobile phones will be equipped with a radio receiver on the back of the middle of the mobile phone, and put the mobile phone directly on the tray of the wireless charger, so as to charge the mobile phone wirelessly.