Wireless Electricity

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# Wireless Electricity - PowerPoint PPT Presentation

Wireless Electricity. The End Of The Plug?. What is it?. Based on electromagnetic induction (using conductive materials in coils to create a magnetic field)

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## PowerPoint Slideshow about 'Wireless Electricity' - erek

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Presentation Transcript

### Wireless Electricity

The End Of The Plug?

What is it?
• Based on electromagnetic induction (using conductive materials in coils to create a magnetic field)
• Resonant Magnetic Coupling: when two objects exchange energy through their varying or oscillating magnetic fields. -Natural frequencies of the two objects are approximately the same.

Source:

http://en.wikipedia.org/wiki/Wireless_electricity

HOW WIRELESS POWER WORKS

• 1. Magnetic coil (Antenna A) is housed in a box and can be set in wall or ceiling.
• 2. Antenna A, powered by mains, resonates at a specific frequency.
• 3. Electromagnetic waves transmitted through the air.
• 4. Second magnetic coil (Antenna B) fitted in laptop/TV etc resonates at same frequency as first coil and absorbs energy.
• 5. Energy charges the device.

Source: www.bbc.co.uk/2/hi/8165928.stm

In Layperson’s Terms
• Wireless electricity is the transfer of power to a

device over the air.

•  It will allow devices to be powered or charged (with the proper wireless attachments) without being plugged into a wall outlet or docked in a charging station.

Source:

http://www.witricity.com/

How It Will Be Used
• Wireless electricity can be used to power or recharge:
• Cell Phones
• TVs
• Computers
• Electric Cars
• Cordless Tools
• Industrial Machinery
• Medical Devices (pacemakers, etc.)
• Military Devices (unmanned robots, planes)
• Consumer Appliances
• ANYTHING ELECTRIC!

Source:http://www.witricity.com/pages/application.html

• More Efficient Office Buildings/Factories
• Entire office buildings will run on wireless electricity
• Employees computers, cell phones, printers will all stay charged throughout the business day
• Electric appliances will not have to be placed around power outlets; running cords is no longer a hassle

Source: http://www.witricity.com/pages/application.html

Current Uses
• Electric Toothbrushes:
• Both of these techniques use small electric fields to charge the devices.
• Haier America Digital Products group has already developed a HDTV that transmits electricity and the HD signal, making the TV completely wireless

Source: http://electronics.howstuffworks.com/wireless-power1.htm

http://www.physorg.com/news182608923.html

Benefits
• More Reliable/Less Costly

- Never run out of battery power in wireless zones

- Power transfers more efficiently than through wires

• More Convenient

- No more changing batteries

- No messy cords

• Environmentally Friendly

- Reduces the use of disposable batteries

- Reduces energy loss

Source: http://www.witricity.com/pages/application.html

Cost?
• Cost is still undetermined
• What they say is there are no exotic materials being used that would make it overly expensive
• Prices should be comparable to products already out

Source: http://www.witricity.com/pages/application.html

Wireless Electricity

Here is an example of how this technology works:

http://www.ted.com/talks/eric_giler_demos_wireless_electricity.html