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Inductive charging pad for a smartphone as an example of near-field wireless transfer. When the phone is set on the pad, a coil in the pad creates a magnetic field [1] which induces a current in another coil, in the phone, charging its battery. Generic block diagram of a wireless power system
English: A block diagram of a wireless power system using resonant inductive coupling.Resonant inductive coupling is the transmission of electric power using magnetic fields between two resonant circuits, one in a transmitting device and one in a receiving device.
Diagram of the most basic resonant inductive coupling wireless power transfer system. [1] This is called 2nd-resonance technology. [2] Diagram of the "WiTricity" resonant inductive wireless power system demonstrated by Marin Soljačić's MIT team in 2007.
English: A generic block diagram of a wireless power system. "Wireless power transfer" is a collective term for several different technologies which transfer power across space without wires using electromagnetic fields .
English: Generic block diagram of a wireless power system that works by capacitive coupling. It consists of a transmitter unit (left) that transmits power to a receiver unit (right). The transmitter consists of an electronic oscillator that drives two capacitor plates (C) 180° out of phase with a high frequency voltage.
Inductive charging (also known as wireless charging or cordless charging) is a type of wireless power transfer. It uses electromagnetic induction to provide electricity to portable devices. Inductive charging is also used in vehicles, power tools, electric toothbrushes, and medical devices.
Illustration of an inductive wireless charging system. The company's technology is based upon Inductively Coupled Power Transfer.As the block diagram shows, varying the current in the primary induction coil within a transmitter generates an alternating magnetic field from within a charging spot.
Conductive power transfer uses electrical contacts to connect a power supply to a portable device in order to transfer energy. The technology is sometimes called "conductive wireless charging". [ 1 ] The need for a conductor-to-conductor connection between the power supply and the device is the main difference from inductive charging and other ...