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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.
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]
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 Wireless Power Consortium (WPC) is a multinational technology consortium formed on December 17, 2008, and based in Piscataway, New Jersey. Its mission is to create and promote wide market adoption of its interface standards Qi , Ki Cordless Kitchen, and Qi Medium Power for inductive charging .
In 2021 the FCC granted a license to an over-the-air (OTA) wireless charging system that combines near-field and far-field methods by using a frequency of about 900 MHz. Due to the radiated power of about 1 W this system is intended for small IoT devices as various sensors, trackers, detectors and monitors. [127]
WiTricity has demonstrated wireless charging for consumer products such as laptops, mobile phones, televisions, [31] and solar panel receivers. [32] The company has also shown how the technology can be used to power soldiers' helmets with night-vision goggles wirelessly during Humvee transportation. [ 33 ]
The S23 and S23 FE support wired charging over USB-C at up to 25W (using USB Power Delivery) while the S23+ and S23 Ultra have faster 45W charging, branded by Samsung as "Super Fast Charging 2.0" . [19] All three have Qi inductive charging up to 15W. The phones also have the ability to charge other Qi-compatible devices from the S23's own ...
An AC adapter or AC/DC adapter (also called a wall charger, power adapter, power brick, or wall wart) [1] is a type of external power supply, often enclosed in a case similar to an AC plug. [2] AC adapters deliver electric power to devices that lack internal components to draw voltage and power from mains power themselves.
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