It would the students to understand the works of Nikola Tesla for Electricity. one can easily understand its working

1. Wireless Electricity
Presented By:
Obaid ur Rehman
Reg No:
BSP01183010

2. Contents:
 Introduction of Wireless Electricity
 History of wireless Electricity
 How it work?
 Modern research over the past years
 Application and challenges of witricity
 Advantages and Disadvantages
 Conclusion
 References

3. Introduction of Wireless Electricity;
 Transmission of electrical energy from power source to an electrical
load without using wires.
 Different from cellular transmission of signals.
Transmitter
Receiver

4. History of Wireless Electricity:
In 1899, Sir Nikola
Tesla performed the
first experiment on
Wireless Electricity.
He had put a great
effort in popularizing
the idea.

5. How it works ?
Wireless electricity uses the same principle as Magnetic
induction , but uses resonance to increase the range.
We know that Everything resonates at a certain frequency,
based on its shape and material.
Energy transfers easily between resonating objects.
With resonant induction, power is transmitted between two
resonating coils.

6. Modern research over the past years:
 Project Witricity:
 In 2007, a group of engineers at MIT (Massachusetts Institute of Technology) came up
with the idea of to use resonant induction to transmit power wirelessly.
 Engineers powered 60 watt bulb from 2 meters (7ft) at efficiency 45%.
 First practical example of WiTricity.

7. Challenges and Application
of Witricity:
 Witricity is an American engineering company.
 Manufactures devices for wireless energy transmission using
resonant energy transfer based on oscillating magnetic fields.
Challenges:
Design of high frequency stable oscillators.
Reducing the size of the coils used.
Cost of production.

8. Application:
 Electronic gadgets like laptops, mobiles,
iPod etc. can be charged wirelessly.
 Charging is automatic, without human
interception.
 The hybrid car can be charged
automatically.
 The entire lighting system can be powered
wirelessly

9. Wireless Electricity:
 No need of power cables and
batteries.
 Magnetic fields interact
weakly with biological
masses.
 No need of line of sight.
 Transmissions possible only in
few meters.
 There are possibility of
“Energy theft”.
 Efficiency decreases with
distance
Advantages: Disadvantages:

10. Conclusion:
 From an environmental standpoint , this technology could replace
disposable batteries and cords, reducing dangerous chemicals and
potential for poisoning communities.

11. Reference:
 https://sites.google.com/a/uw.edu/ethical-implications-of-wireless-power
 https://en.wikipedia.org/wiki/Electromagnetic_induction
 https://en.wikipedia.org/wiki/Electromagnetic_induction