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Rezence (wireless Charging Standard)
Rezence (pronounced reh-zense) is an interface standard developed by the Alliance for Wireless Power (A4WP) for wireless electrical power transfer based on the principles of magnetic resonance. The Rezence system consists of a single power transmitter unit (PTU) and one or more power receiver units (PRUs). The interface standard supports power transfer up to 50 watts, at distances up to 5 centimeters. The power transmission frequency is 6.78 MHz, and up to eight devices can be powered from a single PTU depending on transmitter and receiver geometry and power levels. A Bluetooth Low Energy link is defined in the A4WP system intended for control of power levels, identification of valid loads and protection of non-compliant devices. 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 include Broadcom, Gill Electronics, Integrated Device Technology (IDT), Intel, Qualcomm, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
WiPower
The Alliance For Wireless Power is an industry standard group that uses the principles of magnetic resonance to develop a wireless energy transfer system over distance. The WiPower system uses directed and controlled magnetic fields to replace traditional power cords. To do this, the transmitter utilizes one or more primary windings in order to induce an even magnetic field above its surface. A receiver in the magnetic field uses a secondary winding which captures the magnetic energy and converts it back to electrical energy. WiPower's system was based on modified coreless inductive technology and dynamically adjusts power supplied by the transmitter to power demanded by the receiver without the need for control systems or communication. As such, the company's technology represents a simpler design versus alternate wireless power solutions. The system is capable of supplying power to multiple receivers simultaneously that are placed on top of the transmitter in any position or or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Energy Development
Energy development is the field of activities focused on obtaining sources of energy from natural resources. These activities include production of renewable, nuclear, and fossil fuel derived sources of energy, and for the recovery and reuse of energy that would otherwise be wasted. Energy conservation and efficiency measures reduce the demand for energy development, and can have benefits to society with improvements to environmental issues. Societies use energy for transportation, manufacturing, illumination, heating and air conditioning, and communication, for industrial, commercial, and domestic purposes. Energy resources may be classified as primary resources, where the resource can be used in substantially its original form, or as secondary resources, where the energy source must be converted into a more conveniently usable form. Non-renewable resources are significantly depleted by human use, whereas renewable resources are produced by ongoing processes that can sust ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wireless Energy Transfer
Wireless power transfer (WPT), wireless power transmission, wireless energy transmission (WET), or electromagnetic power transfer is the transmission of electrical energy without wires as a physical link. In a wireless power transmission system, a transmitter device, driven by electric power from a power source, generates a time-varying electromagnetic field, which transmits power across space to a receiver device, which extracts power from the field and supplies it to an electrical load. The technology of wireless power transmission can eliminate the use of the wires and batteries, thus increasing the mobility, convenience, and safety of an electronic device for all users. Wireless power transfer is useful to power electrical devices where interconnecting wires are inconvenient, hazardous, or are not possible. Wireless power techniques mainly fall into two categories, near field and far-field. In '' near field'' or ''non-radiative'' techniques, power is transferred over sh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Interfaces
Interface or interfacing may refer to: Academic journals * Interface (journal), ''Interface'' (journal), by the Electrochemical Society * ''Interface, Journal of Applied Linguistics'', now merged with ''ITL International Journal of Applied Linguistics'' * ''Interface: A Journal for and About Social Movements'' * Interfaces (journal), ''Interfaces'' (journal), now ''INFORMS Journal on Applied Analytics'' Arts and entertainment * Interface (album), ''Interface'' (album), by Dominion, 1996 * Interface (band), an American music group * Interface (film), ''Interface'' (film), a 1984 American film * Interface (novel), ''Interface'' (novel), by Stephen Bury (a pseudonym), 1994 * Interface (Star Trek: The Next Generation), "Interface" (''Star Trek: The Next Generation''), an episode of the TV series * ''Interface series'', a science fiction horror story in short installments on Reddit Science, social science and technology Computing and electronics * Interface (computing), a shared ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Conductive Charging
Conductive charging using contacts instead of wires, sometimes called conductive wireless charging, is conductive power transfer that replaces the conductive wires between the charger and the charged device with conductive contacts. Charging infrastructure in the form of a board or rail delivers the power to a charging device equipped with an appropriate receiver, or pickup. When the infrastructure recognizes a valid receiver it powers on, and power is transferred. Phones and other electronic devices Conductive power transfer uses electrical contacts to connect a power supply to a portable device in order to transfer energy. The need for a conductor-to-conductor connection between the power supply and the device is the main difference from inductive or capacitive wireless charging. The conductive power supply, often a charging base or pad, detects when a compatible receiver or pickup is placed on it. Contact-based accessories may include changeable backs for cellular phones, sp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Open Dots
JVIS is an automotive electronics and accessories supplier based in Michigan. Open Dots Open Dots is a conductive charging specification that was promoted by the Open Dots Alliance, a 501(c)(6) non-profit organization, which was formed by JVIS in 2015 and appears to be inactive since 2018. The technology has been available since 2009 in various JVIS products. An Open Dots receiver, which can be a phone case, has three contacts arranged 120 degrees apart on the circumference of a circle of one-centimeter (two-fifths of an inch) radius, and a fourth contact at its center. An Open Dots charger, typically a charging pad, is a surface with a grid of approximately centimeter-wide contacts, spaced apart so an individual receiver contact cannot touch two pad contacts simultaneously. Two adjacent rows of pad contacts have opposite polarities. When the surface of the receiver is placed on the surface an Open Dots charging pad, the contacts can form an electrical circuit in any angular o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bluetooth Smart
Bluetooth Low Energy (Bluetooth LE, colloquially BLE, formerly marketed as Bluetooth Smart) is a wireless personal area network technology designed and marketed by the Bluetooth Special Interest Group (Bluetooth SIG) aimed at novel applications in the healthcare, fitness, beacons, security, and home entertainment industries. It is independent of classic Bluetooth and has no compatibility, but Bluetooth Basic Rate/Enhanced Data Rate (BR/EDR) and LE can coexist. The original specification was developed by Nokia in 2006 under the name Wibree, which was integrated into Bluetooth 4.0 in December 2009 as Bluetooth Low Energy. Compared to Classic Bluetooth, Bluetooth Low Energy is intended to provide considerably reduced power consumption and cost while maintaining a similar communication range. Mobile operating systems including iOS, Android, Windows Phone and BlackBerry, as well as macOS, Linux, Windows 8, Windows 10 and Windows 11, natively support Bluetooth Low Energy. Compati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Near Field Communication
Near-field communication (NFC) is a set of communication protocols that enables communication between two electronic devices over a distance of 4 cm (1 in) or less. NFC offers a low-speed connection through a simple setup that can be used to bootstrap more-capable wireless connections. Like other "proximity card" technologies, NFC is based on inductive coupling between two so-called antennas present on NFC-enabled devices—for example a smartphone and a printer—communicating in one or both directions, using a frequency of 13.56 MHz in the globally available unlicensed radio frequency ISM band using the ISO/IEC 18000-3 air interface standard at data rates ranging from 106 to 424 kbit/s. The standards were provided by the NFC Forum. The forum was responsible for promoting the technology and setting standards and certifies device compliance. Secure communications are available by applying encryption algorithms as is done for credit cards and if they fit the crite ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Inductive Coupling
In electrical engineering, two conductors are said to be inductively coupled or magnetically coupled when they are configured in a way such that change in current through one wire induces a voltage across the ends of the other wire through electromagnetic induction. A changing current through the first wire creates a changing magnetic field around it by Ampere's circuital law. The changing magnetic field induces an electromotive force (EMF or voltage) in the second wire by Faraday's law of induction. The amount of inductive coupling between two conductors is measured by their mutual inductance. The coupling between two wires can be increased by winding them into coils and placing them close together on a common axis, so the magnetic field of one coil passes through the other coil. Coupling can also be increased by a magnetic core of a ferromagnetic material like iron or ferrite in the coils, which increases the magnetic flux. The two coils may be physically con ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Contactless Energy Transfer
Wireless power transfer (WPT), wireless power transmission, wireless energy transmission (WET), or electromagnetic power transfer is the transmission of electrical energy without wires as a physical link. In a wireless power transmission system, a transmitter device, driven by electric power from a power source, generates a time-varying electromagnetic field, which transmits power across space to a receiver device, which extracts power from the field and supplies it to an electrical load. The technology of wireless power transmission can eliminate the use of the wires and batteries, thus increasing the mobility, convenience, and safety of an electronic device for all users. Wireless power transfer is useful to power electrical devices where interconnecting wires are inconvenient, hazardous, or are not possible. Wireless power techniques mainly fall into two categories, near field and far-field. In '' near field'' or ''non-radiative'' techniques, power is transferred over shor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cordless
The term cordless is generally used to refer to electrical or electronic devices that are powered by a battery or battery pack and can operate without a power cord or cable attached to an electrical outlet to provide mains power, allowing greater mobility. The term "cordless" should not be confused with the term "wireless", although it often is in common usage, possibly because some cordless devices (e.g., cordless telephones) are also wireless. The term "wireless" generally refers to devices that use some form of energy (e.g., radio waves, infrared, ultrasonic, etc.) to transfer ''information'' or ''commands'' over a distance without the use of communication wires, regardless of whether the device gets its power from a power cord or a battery. The term "portable" is an even more general term and, when referring to electrical and electronic devices, usually means devices which are totally self-contained (e.g., have built-in power supplies, have no base unit, etc.) and which may also ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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