Wireless Charging

Wireless Charging:

When I first heard about the possibility of a wireless charger from my friend, I thought it was just small talk but then I sat on my computer and searched it over the internet and there it was!!! A completely WIRELESS charger with absolutely no cables attached to the phone, simply genius.

Then I wondered what was the ‘science’ behind this new charger? Well, if you have studied physics till high school then you would know what is magnetic induction.Magnetic induction is the process of transferring electrical current between two devices through coils which create an electromagnetic field. The wireless charger is based on this very principle.

The Process of Wireless Charging

The whole process of how the actual charging takes place is described below:

·       Power from the mains supply is converted into a high frequency alternating current.

·       The current is passed through the transmitter coil which creates a magnetic field.

·       The magnetic field created by the transmitter coil induces a magnetic field in the receiver coil of the device when it is in some specific range.

·       The magnetic field of the receiver coil produces an alternating current which is then converted into direct current and stored in the battery of the device.

Now you know the secret behind the long-awaited charger that is and will be handy for everyone and especially for people who don’t like sorting tangled wires all day and have better things to deal with.

There are always two sides to a story and same is the case with wireless charging, it has its own pros and cons. So, I am going to list them down below.

Pros:

·       Less risk of electrical faults e.g. short circuits.

·       Greater durability as no need of plugging wires that will wear out by plugging in and out of the jacks.

·       Greater convenience for some people as no cables lying around.

Cons:

·       More expensive than the conventional chargers and cables.

·       Slower charging due to lower power efficiency of the wireless charger.

·       Lesser convenience for some people as they cannot move the device or pick it up while charging.

There you have it, a list of pros and cons so you can decide for yourself if the wireless charger is worthwhile.

Applications of Wireless Charging:

The smartphone industry is without a doubt that is benefiting greatly, if not the most, from wireless charging. However, there are other applications of wireless charging too which include charging of AA battery powered devices, medical equipment and researchers are exploring the options of wirelesly chargeable cars as well. Surely, this will change the world as we know it today.