what is True wireless charging?Can we charge phones with light?

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TRADITIONAL WIRELESS CHARGING(INDUCTIVE)
WIRELESS CHARGING DOCK


WORKING
Wireless charging uses two resonant inductive couplings to transmit low-power signals between two devices. These are specially designed to transmit electricity without touching each other like a normal wired connection does. The base station, which is plugged into the wall through its own power supply, has a transmitter coil and your phone has a receiver coil. The base station regularly sends a signal out, and when a receiver coil gets close enough, a resonance change (the base station changes the amplitude of its oscillation — it vibrates faster) happens in the signal. The waveform of the signal is then modulated (changed to let the coil in the phone know power is being sent) and inductive charging begins.


TRUE WIRELESS CHARGING(RADIO WAVES)
MOTHER BOX

The MotherBox is the first wireless charger that can really wirelessly charge your device. There’s no contact required. It's truly wireless. You can charge your iOS or Android devices simultaneously and never worry about your charging cables again.





                       
TRUE WIRELESS CHARGING(WI CHARGE)

Wi-Charge claims to deliver power using focused beams of invisible infrared light. The system consists of a transmitter and a receiver. Transmitter connects to a standard power outlet and converts electricity into the infrared laser beam. Receivers use a miniature photovoltaic cell to convert transmitted light into electrical power. Receivers can be embedded into a device or connected into an existing charging port. The transmitter automatically identifies chargeable receivers and start charging. Several devices can charge at the same time. According to Wi-Charge, it can deliver several watts of power to a device at several meters away.[3] The core technology is based on a distributed laser resonator which is formed by the retroreflectors within the transmitter and the receiver. This unique concept allows the charging of multiple devices without any moving components and if an opaque object enters one of the beams the corresponding power transfer is turned off automatically. 



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