WIRELESS CHARGING TECHNOLOGY
There are over four billion mobile phone users in the world and the number is expected to end up with another billion or two by the end of decade. Figure shows that the generation is now getting dependent on the mobile phones especially to spend most of their free time on the internet to explore the things in their interest. But it’s difficult to keep your phone from dying over the extensive usage and it’s not easy to keep the charger with you all the time even in the form of Power Bank in your pocket or bags. So an invention that made the life of the people easier is “Wireless Charging”.
Wireless charging is not a new idea but a scientist named Nikola Tesla proposed the idea of ‘Wireless Charging’ in 1902. He proposed that energy can be transferred between two conductors but due to lack of budget and some other untold reasons he had not implemented it on reality basis.
It basically consists of few components including Electronic Oscillator, AC current and the Transmission coil, Transmitter and receiver end .
The transmission coil is a tightly wounded element in which as the AC current passes through, produces magnetic flux. The magnetic flux density depends on the elements like the diameter of the coil, number of turns in the coil, the distance from the coil and the current. The process is almost same on the receiver end. At the receiver device the coil of the same type is embedded into the charging circuit. The magnetic field once produced in the initial stages is picked up by the receiving coil and the current is induced. The AC power is passed through the rectifier that stabilizes it to convert it into DC power; the phone could use to charge the battery.
This is in the mind of the technologists that with the invention in the technology they can’t afford to stick with that and just enjoy the reward of what they invented. No, there is a need of improvement/update in every field. Teams are working together to make an inductive charger that could charge up to four mobile phone devices at a specific range at an output of 10 watts per device. It’s completely conceivable that the office furniture of the future will have inductive/wireless charging capability built-in; followed by most mobile phones, laptops and other wireless devices. The idea of charging through Wi-Fi has also been considered and the scientists are working over that area of technology.