The Wireless Power Consortium has developed a standard for the near-field wireless transmission of energy which they call Qi. Pronounced ‘chee’ and meaning ‘energy’, the Qi system is a magnetic resonance inductive coupling between two coils for the purpose of safe and efficient transfer of energy from the transmitter to the receiver.

The Qi system includes a medium power transmission, or in other words a charger, and a receiver in the mobile device that is compatible. To use this system, simply put the smartphone on the charger, which creates a magnetic field and recharges the device by magnetic induction. The regulation of the output voltage is controlled by a chip in the transmitter that communicates with the receiver and which controls the power levels. The receiver may require more or less power depending on the state of charge of the battery.

Inductive charging creates simple solutions to easily charge your mobile devices without the need for a physical connection. It is a great example of the implementation of ever advancing technology.