Wireless Energy Transfer System | Wireless Electricity

Wireless energy transfer is a method of transferring useful electricity from one place to another without the need for electrical conducting media. Usually, this process involves a phenomenon known as electromagnetic induction. In this tutorial, I will show you how to make a Wireless Energy Transfer System using only 2 coils of wire and some basic components.

One of the coils will work as a transmitter and the other will be the receiver. The coils will transfer energy only when they are placed close to each other.

Hardware Components

The following components are required to make Wireless Energy Transfer System

S. NO	Component	Value	Qty
1.	NPN Transistor	2N2222	1
2.	Copper Wire	0.7mm Long	1
3.	LED	5mm	1
4.	Battery Cell	1.5v	1

2N2222 Pinout

For a detailed description of pinout, dimension features, and specifications download the datasheet of 2N2222

Circuit Diagram

Connection

1. Roll the wire 5 times on a circular object with a diameter of 6cm.
2. After completing 5 turns, Now make a loop in the wire and then start rolling the wire again to give 5 more turns. The total number of turns will be 5 turns + Loop + 5 turns.
3. Take another piece of wire and roll it on a circular object to give it 20-30 turns.
4. The wire with the loop will be your transmitter and the wire without the loop will be the receiver.
5. Connect the Transistor and 1.5V Cell to the transmitter wire as shown in the video.
6. Connect the LED to the receiver wire.
7. Now, test the circuit by bringing both the wires close together.

Working Explanation

In this circuit, we will connect a cell and a transistor to the transmitter coil. Cell supplies electric current to the transmitter coil and this current is amplified by the transistor. The current flowing in the wire creates a magnetic field and this field can induce a current in the receiving coil.

We will connect an LED to the receiving coil and when we will bring both the coils close together, the magnetic field of the transmitter coil will induce a current in the receiver coil. The amount of current that is induced in the receiver coils depends upon the distance between the coils, and also on their relative orientation.

Application

• This mechanism of energy transfer is used in relays and electric generators.
• We can transfer power to places where wired transmission is not possible.