Thursday, 26 September 2013

Wireless charging is already available for low-power applications up to 5 Watts. These are suitable for mobile phones and other devices. Wireless chargers use magnetic induction. They offer the promise of being able to place a device on a surface and have it charge automatically - no fiddling with cables required. Remote power transfer is a complex business with some very fine tuning required to make it work well. Wireless charging is more accurately described as "inductive charging" because it uses magnetic induction.

Inductive charging uses magnetism to transmit energy. The current coming from the wall power outlet moves through the wire in the wireless charger, creating a magnetic field. The magnetic field creates a current in the coil inside the device. This coil is connected to the battery and the current charges the battery. Devices must have the appropriate hardware in them to support wireless charging - a device without the appropriate coil cannot charge wirelessly.

Consideration of Wireless Phone Charging Market Forecasts indicates that markets at $3 million will reach $33.6 billion by 2019. Growth comes as a result of the rapid adoption of smart phones that pushes the user base to 8 billion people by 2019. While wireless phone charging is considered a perquisite for a high end device, it is soon expected to become a necessary feature.



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