Devendra bhardwaj 9589903240 www.facebook.com/devendra.k.bhardwaj www.facebook.com/class12thschool

1. “WIRELESS POWER TRANSFER”
A SYNOPSIS REPORT SUBMITTED
TO
-:WIRELESS POWER TRANSFET:-
Title of the project WIRELESS POWER TRANSFER
Working Principle High Frequency Mutual Induction
Power Supply 220 Volt AC
Display LED
Input High Frequency Oscillation
Features:
1) Wireless Electricity Transfer.
2) Good Electricity Transfer Efficiency.
3) High Frequency Oscillation.
4) Useful to drive the low current devices.
5) Can be used for led display

2. -:Abstract:-
Wireless Electricity Transfer is interesting, fascinating and an amazing topic for
the engineers. Electronic hobbyists.
The pioneer work is down by the Nicola Tesla in late 80’s, but his dream of
transferring the electricity energy wirelessly was not fulfilled due to various
technical limitations. The wireless electricity transfer is not so efficient method to
transfer electricity for long distance there efficiency is very less because as the
distance increases the energy gain decreases. So hear we have present an
interesting project on wireless electricity transfer which is widely used for various
applications such as mobile phones charging, running small brush less fan, activate
battery less devices, various medical application, levitated lightings, contact less
switching and detection and other application used for wireless power transfer
-:Principle:-

3. The basic principle involve in this project is high frequency mutual induction. Here
we use high frequency power oscillator which produces 20-40 KHz AC Current of
about 100 watts outputs is feed to the primary coli which generate strong feed
around the coli to dissipate more and more energy in the air, which is received by
the secondary coil and rectified by the diodes to convert it into DC which is used to
charge the batteries or to run the small current devices easily up to the certain
distance.
-:Block Diagram:-
Transmitter:-
Figure (a)
Receiver:-
Figure (b)
-:Component:-
1. Power transistor
2. Resistance
AC Input AC To DC
Converter
High
Frequency
Power
Oscillator
High
Frequency
Transformer
Primary
Coil
Secondary
Coil
Rectifier Regulator Rechargeable
Battery /Device

4. 3. Capacitor
4. Diodes
5. LED’s
6. Toridal Transformer
7. Primary Coil & SecondaryCoil
8. Heat sinks
9. Diac
10.PCB (Zero Board)
-:Advantage:-
1. Low Cost.
2. Low Power consumption.
3. Easy to install.
4. Effective in battery less device.
5. Compact
-:Disadvantage:-
1. Low efficiency For long distance electricity transfer
2. Losses or energy due to winding or coil
-:Scope for advancement:-
1. Efficiency Can be increased by using resonant coil

5. -:Applications:-
1. Medical devices.
2. Battery less passive devices.
3. Mobile phone charging.
4. Contact less activation and detection.
5. Running low current devices.
-:BIBOGRAPHY:-
1. www.dkdynamics.com
2. YouTube links :- www.youtube.com/HEnj6gxnNr8
Reference Book:-
1. Oscillator Circuit By David Mc Johns
2. Fundamental of electronics by Williams
3. The Tesla High frequency Oscillator (Tesla Universe )
4. J. Van Der Tang (High frequency oscillator Design for integrated
transceivers)