Wireless charging is becoming commonplace in the latest premium smartphones.Also known as inductive or called as near field charging. The technology does away with charging ports and cable and allows devices to be powered by placing them on a special magnetic surface.Some argue that this is not true wireless charging as it still requires physical contact and is awaiting over the air charging which will deliver power through a Wi-Fi-like connection.
Wireless charging isn’t magic there still you need a wire. The difference is that the wire is connected to a charging base instead of your phone, so you can just drop your Android onto the charger and things get to work without hooking anything up to your phone. The charging base can be almost any shape or size, and can even be in something like your car dash.It will work as long as you’re able to get the right spot on the rear of your Android on the right spot on the base of the charger.
A good example would be having a wireless charging base on your desk at work. When you’re not using your phone, you set it on the charger. When you need to use your phone, pick it up and it has a charge. Wireless charging isn’t as fast as Quick Charge, but it’s easy and something you’re more likely to use to keep your phone topped off throughout the day. That’s the wireless charging shines that ease of use.
Unlike conventional charging, where you plug a wire into a port wireless charging happens via an electromagnetic field created by a charging pad. This can either be resting on top of a surface or actually built into the surface itself.Power is transmitted through the electromagnetic field from the pad to the device which has a built-in receiver coil that generates current from the signal.
Working mechanism of wireless charging are:
- Your Android and the charger each have special electrical coils in them.
- When the two coils get close enough, they use magnetism to create small oscillations or vibrations in the coil and an EMF is created by the coil inside your phone.
- This EMF sends a small amount of power through the charging circuit in your phone and charges the battery.
- It costs more and takes longer to charge than it would if you plugged your phone in and creates more heat because this is less efficient than connecting wires the traditional way.
- Faraday’s law of induction is awesome and the Maxwell-Faraday equation is like mathematical chocolate: sweet and decadent. Wireless charging is also pretty awesome when you’re using it, too.