This document describes a student project involving wireless power transmission using a Tesla coil. It discusses the working principle of magnetic induction in a Tesla coil using a primary and secondary coil. The student proposes a design for a low-cost lamp that can be powered wirelessly using this technique. Practical examples of wireless charging for electric buses are also mentioned. The document then shifts to discussing another student project on wireless audio transmission using laser beams and infrared signals. Circuit diagrams and applications for a cheap wireless IR switch controlled by remote are presented.

1. SHUBHAM SHARMA
13EEE075
1) SLAYER EXCITER TESLA COIL
(WIRELESS POWER TRANSMISSION)

2. TESLA COIL
A Tesla coil is an electrical resonant
transformer circuit invented by Nikola
Tesla around 1891.It is used to
produce high-voltage, low-current,
high frequency alternating-
current electricity.

3. SLAYER EXCITER TESLA COIL
It’s a coil which gives
the wireless power
transmission.
coil consist of primary
(600 turns) & secondary
(3 turns) and high
frequency circuit (50-100
khz) for induction. Supply
source is dc (12 volt).

4. WORKING PRINCIPLE
• Faraday's law of magnetic induction, is
as follows: The EMF induced in a circuit
is proportional to the time rate of
change of the magnetic flux linking
that circuit. There are many different
ways in which the magnetic flux linking
an electric circuit can change.
• MAGNETIC FLUX:- Magnetic flux is the
number of magnetic field lines passing
through a closed surface (such as a
conducting coil).

5. SLAYER EXCITER TESLA COIL
(wireless power transmission)

6. MY IDEA
We can make a lamp which consist of a lots of
fluorescent bulb even if they are fuse they will glow
if we bring bulbs near to coil and it gives the
sufficient power to glow fluorescent bulb with just a
less than 100 bucks.

7. PRACTICAL EXAMPLE
In South Korea, first Wireless
Charging Powers Electric Buses
“The Korea Advanced Institute of
Science and Technology (KAIST)
developed the Online Electric
Vehicle (OLEV) platform”

8. First Wireless Charging Powers
Electric Buses
Its the same technology used to charge phones
wirelessly, but used on a much larger scale. In public
transit, induction relies on magnetic charge plates
beneath roadways and a counterpart inside the bus.
When an induction-capable bus passes over that
charging plate, the two magnets become “tuned,”
and current flows to charge the on-board battery
with a 6.7-inch gap between the road and the bus,
there’s 85% charging efficiency at 100 kW from the
road to the bus.

9. FUTURE IMPROVISATION
(MULTI DEVICE WIRELESS CHARGING STATION)
Mobile phone
Tablet
IPOD
Laptop

10. SHUBHAM SHARMA
13EEE075
2) Wireless Laser communication
(Transmit sound through Laser)
Transmitter
Receiver
Digital filter
Input
Output

11. Block Diagram
(Wireless laser communication )
1) Mic
input
2)Amplifier
3)Transmitter 5) Receiver 14) Laser
Transmission
9) Receiver 210) Speaker 2
7)Speaker 1
11) Receiver 3
12) Speaker 3
8)Reflection
6)Filter

12. PORTABLE POWER AMPLIFIER
Features of this amplifier :-
• 2 Inputs - Aux cable and
Bluetooth
• Output - 4 ohm, 3 watt
speaker with output jack
• 2 volume controls - 1st
from lm386 booster circuit
and 2nd through external
amplifier
• 2 supply modes - AC & DC
• Cost is less than 1000 bucks

13. DEMO VIDEO
(without filter – song “one last breath” by creed band)

14. SHUBHAM SHARMA
13EEE075
3) CHEAPEST WIRELESS IR SWITCH
ON MODE OFF MODE

15. CHEAPEST WIRELESS IR SWITCH
We can control any
electrical appliances
with this switch and
control by any infrared
remote, T.V. remote ,
D.V.D Remote , A.C.
remote or any remote
which transmit IR
wave by attaching this
device to that
appliance as a switch
in less than 150 bucks.

16. APPLICATION
AC STEPPER MOTOR
WIRELESS IR SWTICH
IR REMOTE

17. THANK YOU
- SHUBHAM SHARMA
(NIT GOA, EEE DEPARTMENT)