Wireless charging as a concept has been around since inventor and physicist Nikola Tesla first concluded that you could transfer power between two objects via an electromagnetic field.
Wireless charging can be considered synonymous to a transformer, where one winding is excited by a source and the other winding receives the power via electromagnetic waves and somewhat recreates the power sources, but without phyical electrical connection.
Essentially, wireless charging uses a loop of coiled wires around a bar magnet � which is known as an inductor. When an electric current passes through the coiled wire, it creates an electromagnetic field around the magnet, which can then be used to transfer a voltage, or charge, to something nearby. Like I its like a transformer, but just a flat one.
Induction chargers use an induction coil to create an alternating electromagnetic field from within a charging base, and a second induction coil in the portable device takes power from the electromagnetic field and converts it back into electric current to charge the battery. Wireless charging can be done in two ways
Pros and Cons:-
As we are all aware, that every coin has 2 sides, we can safely say that even the wireless charging has its own Pros and Cons. Lets have a look
Pros:
Convenient
Hassle Free and Corrosion Resistant
Higher Durability
Cons:
Inefficient (only 65-70% Efficiency)
Slower Charging
Expensive.
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