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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.
Wireless power technologies by range [12] [15] [57] [58] Technology Range Directivity [15] Frequency Antenna devices Current and/or possible future applications Inductive coupling: Short: Low: Hz – MHz: Wire coils: Electric tooth brush and razor battery charging, induction stovetops and industrial heaters. Resonant inductive coupling: Mid-Low ...
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.
Furniture retailer IKEA introduced lamps and tables with integrated wireless chargers for sale in 2015, [26] and the Lexus NX gained an optional Qi charging pad in the center console. [27] An estimated 120 million wirelessly charging phones were sold that year, [ 25 ] notably the Samsung Galaxy S6 , which supported both Qi and the competing ...
Electromagnetic or magnetic induction is the production of an electromotive force (emf) across an electrical conductor in a changing magnetic field. Michael Faraday is generally credited with the discovery of induction in 1831, and James Clerk Maxwell mathematically described it as Faraday's law of induction .
Originally pioneered by Nikola Tesla in the 1890s, wireless power transfer systems, largely based on Michael Faraday's electromagnetic induction principles of 1831, have seen many applications, from electronic toothbrushes to HP's smartphones based on webOS.
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