wireless power the end of chords michael russo. how it works electromagnetic induction resonant...
TRANSCRIPT
Wireless PowerThe End of Chords
Michael Russo
How it Works
Electromagnetic Induction
Resonant Magnetic Coupling-two objects exchange energy through their varying
or oscillating magnetic fields.
http://electronics.howstuffworks.com/everyday-tech/wireless-power.htm
How it Works Cont.
1. Magnetic coil (Antenna A) is set in wall or ceiling.
2. Rectenna A, powered by mains, resonates at a specific frequency.
3. Electromagnetic waves are then transmitted through the air.
4. Second magnetic coil (Rectenna B) in phone, laptop, etc… runs at same frequency as first coil and retrieves energy.
5. Energy charges the device.
A rectenna is a rectifying antenna, a special type of antenna that is used to convert microwave energy into direct current electricity. They are used in wireless power transmission systems that transmit power by radio waves.
Rectenna
FutureMore efficiency in households/businesses.
All electronics will be charging electronically throughout the day
No need for plugs/wires. Less manufacturing need for these types of products.
http://www.futureleap.com/news/wireless-power/
Where We See it TodayToothbrushes
Wireless power padsThese type of power sources can only produce
small amounts of frequency.
Advantages vs. Disadvantages More reliable
Less costly
Convenient
Environmentally friendly
Cost (Research, development)
Overcoming distance
Need for high frequency
References "Wireless Power Arriving Soon | Future Leap." Future Leap.
N.p., n.d. Web. 12 Nov. 2013. http://www.futureleap.com/news/wireless-power/
"How Wireless Power Works." HowStuffWorks. N.p., n.d. Web. 12 Nov. 2013. http://electronics.howstuffworks.com/everyday-tech/wireless-power.htm
"Key Factors for Wireless Power Transfer." ScienceDaily. ScienceDaily, 31 July 2013. Web. 1 Nov. 2013. http://www.sciencedaily.com/releases/2013/07/130731122512.htm
"Understanding Low-frequency Non-radiative Power Transfer." Low-frequency Non-radiative Power Transfer. N.p., n.d. Web. 12 Nov. 2013. http://www.wirelesspowerconsortium.com/technology/low-frequency-non-radiative-power-transfer.html