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Emerging Technologies: Wireless Charging

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by

Carlota Ortega Vega

on 27 March 2013

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Transcript of Emerging Technologies: Wireless Charging

By Krishina and Carlota Wireless Charging By Krishina and Carlota 11B Works Cited Wireless charging (also known as inductive charging) is the transfer of energy between two objects through the use of an electromagnetic field What is Wireless Charging? 1)Current from the wall outlet flows through the coil inside the charger, which creates a magnetic field. This coil is called the primary winding.

2)When you place an electronic device near the charger, the magnetic field induces a current in another coil, called the secondary winding, which is connected to the battery of the device

3)The current induced in the secondary coil recharges the battery of the device. How does wireless charging work? Direct wireless power:
•for interconnections and automatic wireless charging for implantable medical devices such as ventricular assist devices, pacemakers and defibrillators.
•in harsh environments such as drilling, mining, underwater, etc. where it is very hard or impossible to use wires.
•for stationary electronic devices such as TVs
or wireless loudspeakers
•for desktop PC peripherals such as wireless mouse, keyboard, speakers or display

Wireless charging:
•of mobile electronics (cellphones, laptops, etc.) at home, car, office, Wi-Fi hotspots, etc. while devices are in use and mobile.
•for high tech military systems such as battery powered vehicles or unmanned mobile robots.
Other uses of wireless charging WIRELESS CHARGING How Does Wireless Charging Work? (cont.) "Disadvantages of Current Wireless Charging Technology." Wireless Chargers Review. N.p., 6 Aug. 2012. Web. 26 Mar. 2013. <http://wirelesschargersreview.com/disadvantages-of-current-wireless-charging-technology/>.Ferris, David. "How Wireless Charging Will Make Life Simpler (And Greener)." Forbes. Forbes Magazine, 24 July 2012. Web. 26 Mar. 2013. <http://www.forbes.com/sites/davidferris/2012/07/24/how-wireless-charging-will-make-life-simpler-and-greener/2/>."How Wireless Power Works." HowStuffWorks. N.p., n.d. Web. 27 Mar. 2013. <http://electronics.howstuffworks.com/everyday-tech/wireless-power1.htm>."Inductive Charging." Wikipedia. Wikimedia Foundation, 18 Mar. 2013. Web. 19 Mar. 2013. <http://en.wikipedia.org/wiki/Inductive_charging>.Ridden, Paul. "Korean Electric Vehicle Solution." Gizmag. N.p., 20 Aug. 2009. Web. 27 Mar. 2013. <http://www.gizmag.com/kaist-olev-electric-vehicle/12557/>.Rivers, Autumn, and J.T. Gale. "What Is Wireless Charging?" WiseGeek. Conjecture, 02 Apr. 2013. Web. 26 Mar. 2013. <http://www.wisegeek.com/what-is-wireless-charging.htm>."Wireless Battery Charging." Radio Electronics. N.p., n.d. Web. 22 Mar. 2013. <http://www.radio-electronics.com/info/power-management/wireless-inductive-battery-charging/basics-tutorial.php>."Wireless Charging." Nokia. N.p., n.d. Web. 22 Mar. 2013. <http://www.nokia.com/global/innovation/wireless-charging/wireless-charging/>."Wireless Charging Soon Available for Devices Smaller Than Mobile Phones." Science Daily. N.p., 18 Mar. 2013. Web. 22 Mar. 2013. <http://www.sciencedaily.com/releases/2013/03/130318104945.htm>."Wireless Energy Transfer." What Is. N.p., n.d. Web. 19 Mar. 2013. <http://whatis.techtarget.com/definition/wireless-energy-transfer>.Wireless Power." : Timeline of Wireless Power. N.p., n.d. Web. 27 Mar. 2013. <http://wirelesspowerf.blogspot.ae/2013/01/timeline-of-wireless-power.html>."WiTricity Applications." WiTricity Corp. N.p., n.d. Web. 27 Mar. 2013. <http://www.witricity.com/pages/application.html>. Advantages of Wireless Charging Wireless charging:
•cuts down the demand for power cables, while simultaneously making electronics longer lasting.
•helps devices become much more energy efficient, as well as more green and sustainable.
•allows us to overthrow disposable batteries, which when disposed of in landfills are harmful to the environment
•can be placed near water if needed, because all the parts of the charger are enclosed, with no wires protruding out, and thus reduces the risk of electrical shock and corrosion.
•can sense how much power an individual device would require, thereby not overcharging it.
•is much more convenient as you just simply need to place the electronic device on the charger instead of having to plug it in to a power source Disadvantages of Wireless Charging Wireless chargers:
•are particularly higher priced when compared with regular chargers, so to obtain the best and most efficient charger one would need to spend a lot of money. •might be unsafe, as they generate more heat than normal chargers, which may lead to electric shocks•do not provide a very large range. This means one will have to keep the electronic device very close to the charger in order for the device to charge.•emit small amounts of radiation, which could be harmful to humans Who invented wireless charging? Electromagnetic induction was first observed by the Serbian-American scientist Nikola Tesla during the late 19th century. He realized that when a strong alternating current (AC) passed through a wire coil, a coil placed nearby would get a weaker alternating current at the same frequency, even though the two coils were not connected. This demonstrated that the principle of wireless transmission of energy which led to the invention of wireless charging How has wireless charging developed throughout the years? 1893- Nicola Tesla demos wireless illumination of phospherescent lamps in Chicago
1898 –Heinrich Rudolf Herz confirms the existence of electromagnetic radiation
1968 – Peter Glaser proposes wirelessly transferring solar energy caputred in space using ”powerbeaming” technology
1973 – The world’s first passive RFID system demonstraed at Los Alamos National Lab
1998 – Alticor first demonstrates wireless power technology to power the ultraviolet lamp in its spring water purification system
2008 – Intel reproduces Tesla’s 1894 implementation and Prof. Boys’ experiments by wirelessly powering a light
2008 – Formation of the Wireless Power Consortium (WPC)
2009 – Powermat launches wireless mat products
2010 –WPC approves world’s first wireless power standard (Qi) for low-powered devices Uses of wireless charging in transport •On Line Electric Vehicle (OLEV) system – This system is already being used in Korea and it is when electrical vehicles such as cars and buses are wirelessly charged while on the road by getting their power from cables underneath the surface of the road
•Wireless charging for electrical vehicles in parking garages Uses of wireless charging in phones Most phones today can use wireless charging such as:•iPhone •Samsung Galaxy •Nokia Lumia- offers built in wireless charging, meaning the phone can be charged by adding on a wireless charging shellThis technology has become very useful for especially businessmen, who are on the move often, as they can charge their phones fairly conveniently Future uses of wireless charging Wireless charging is quickly becoming one of the most used technologies till date. Wireless chargers have developed tremendously over the past few years, in terms of the range they provide, which has expanded from just a few centimeters, to a number of feet.

Wireless charging is most commonly available for smart phones today, however it will soon be available for a lot more cell phones. The scope of application of wireless chargers is to be expanded, to other, smaller portable devices, such as:
•Mobile phone accessories
•Wrist devices
•Wireless sensors
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