1. Y.AMRUTH SANJEEV REDDY 11W51A0250
T.HARI PRASAD 11W51AO245
ELECTRICAL AND ELECTRONICS
ENGINEERING
SVTM
Presented by

2. OUTLINE
 What is witricity ?
 background
 working principle
 Need of witricity
 is witricity secure ?
 ease of witricity
 advantages
 obstructions
 future of witricity

3. WHAT IS WITRICITY ?
“The transfer of electricity from one place to other
without using wires ” is Known as Witricity.

4. BACKGROUND
• Nikola Tesla – The Genius
He did enlighten 200 lamps
at the distance of 40 km,
wirelessly.
• But only 15% of efficiency
was achieved.

5. Reborn of witricity
• In 2007,MIT powered 60
watt light bulb from
2mts(7fts) at 40%
efficiency
• Forgotten invention was
reborn in 2007
• Prof. Soljacic – Another
Genius MIT-IBM
Collaboration

6. WORKING PRINCIPLE
Works under mutual induction
.

7. Types of wireless energy transfer
There are 3 major types of wireless energy
transfer:
• Short range : Inductive Coupling
• Medium range: Resonant Induction
• Long range : Electromagnetic Wave power transfer

8. How wireless power works

9. NEED OF WITRICITY
Cell phones, IPod, laptop computers are capable
of re-charging themselves without ever being
plugged in.

10. IS WITRICITY SECURE?
 Principle is based on Magnetic
Waves.
The question is if Magnetic
Waves Secure ?
The answer is we all live in a
globe that has already
surrounded by magnetic waves.
Yes it is secure

11. EASE OF WITRICITY

12. ADVANTAGES
 Getting rid of great deal with cables.
 Places where we cannot have physical cables.
 Safe, fairly, efficient and good range.
 Theoretically one stationary coil in a room
could supply power to multiple devices at
receiving coil.
 Power can be delivered in any direction.

13. Obstructions
 Walls and furniture can be penetrated
through by Witricity.
 Only obstructions are metal structures
like metal doors and metal walls.

14. USAGE AREAS
 ELECTRICAL CARS
 MOBILE PHONES
 COMPUTERS
 TELEVISIONS
 ANY ELECTRICAL CONSUMING DEVICE

15. DEMO
• Sony demonstrated its
wirelessly powered
television.[2010
October]
• Demonstration of Witricity
on cellphone and LCD at
the TED conference.

16. FUTURE WITRICITY
 Think that the city will be covered with Witricity hot
spots , just like Wireless Internet, there will be no
need of charging batteries, or carrying adapters all
around !

17. THANK YOU……
Queries please