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Qi (/ tʃ iː / CHEE) is an open standard for inductive charging developed by the Wireless Power Consortium. It allows compatible devices, such as smartphones , to receive power when placed on a Qi charger, which can be effective over distances up to 4 cm (1.6 in). [ 1 ]
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.
Power Matters Alliance (PMA) was a global, not-for-profit, industry organization whose mission was to advance a suite of standards and protocols for wireless power transfer for mobile electronic devices (specifically a type of inductive charging that competes with the Qi standard).
The first generation Magic Mouse was released on October 20, 2009, and introduced multi-touch functionality. It connects wirelessly to a Mac computer via Bluetooth. [4] It is powered by two AA batteries, and operates using a solid-state laser tracking sensor like the previous-generation wireless Mighty Mouse.
The A4WP was formed in early 2012 with the intent to create a wireless power transfer standard to compete with the existing Qi standard. Board member companies [ 5 ] included Broadcom , Gill Electronics, Integrated Device Technology (IDT) , [ 6 ] Intel , [ 7 ] [ 8 ] Qualcomm , Samsung Electronics , [ 9 ] Samsung Electro-Mechanics , and WiTricity .
The proliferation of portable wireless communication devices such as mobile phones, tablet, and laptop computers in recent decades is currently driving the development of mid-range wireless powering and charging technology to eliminate the need for these devices to be tethered to wall plugs during charging. [173]
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