Wireless electricity is something new and exciting. While its core principles are fairly easy to understand it can quickly become overwhelming for the average person. I faced a similar problem, I found the whole thing rather overwhelming to understand due to the fact that there were many different things that I felt I needed to understand to be able to make one. So lets get to it! and here's a video of it working:-
Step 1: Things Required
To make this we need :-
1) NPN Transistor. I used the transistor from my old telephone pcb
2) insulated copper wire that I took out of my old cfl bulb
3)Resistor 1 Kilo Ohm. I took it from old telephone circuit board.
4) L.E.D light
5) A 1.5 Volt AA Battery or CMOS battery would work similarly.
Tools required :-
2) Matchsticks or lighter
Step 2: Collecting Things From Scrap
For transistor search in the old pcb if you find it then solder it from the circuit board .For resistor :-
- search on internet about its color bands
- search in pcb
- remove it from the pcb
Step 3: Circuit Schematic
Here is the diagram of the device. Diagram is also present.
Step 4: Making Receiver Coil
First of all take the insulated wire roll that out and with wires,make a coil of 30 turns around a round object.Tie roll on the ends of the wires, to not make it messy.Make sure that the turns must be 30 only.
Step 5: Making Transmitter Coil
With the same round object, start coiling again. This time when you make your 15th turn with the wire, create a tap and leave a wire of 3 inches and then coil another 15 turns. Now you have a coil with two ends and one tap.Tie knots on the ends of the wires, so that it doesn't uncoil by itself.
Step 6: Scraping Ends of Insulated Wires
Melt the insulation from the ends and the tap from both the coils..Use lighter or matchsticks for it.
Step 7: Join L.E.D to Receiver
To make the receiver, just take receiver coil and connect its ends to the leads from the L.E.D.Make sure that the ends of coil are not insulated.
Step 8: Joining
Take the transistor, and place it so that the flat side is facing up and the leads are facing towards you. The lead on the left is the Emitter, the lead in the middle is Base, and the lead in right is the Collector. Take the resistor and connect one of its ends to the base of the transistor. Take the other end of the resistor and connect it one of the ends (not the tap) from transmitter coil. Take the other end from transmitter coil and connect it to the Collector of the transistor. If you want you could connect a small piece of wire to the Emitter of the transistor (It would work as an extension of the Emitter.For more clarity please refer the diagram.
Step 9: Joining Battery
Just take the tap from transmitter coil and connect it to the positive end of the battery. Connect the negative end of the battery to the Emitter of the transistor. Now if you bring receiver coil with the L.E.D close to transmitter, the L.E.D lights up!This seems to be dream!
Step 10: Making Enclosure
Just take a cardboard square and join the transmitter to it arranging it yourself with that switch so it doesn't run out the chemicals from the battery.
Step 11: Done!
Electric and magnetic fields are created by charged particles in matter such as electrons. A stationary charge creates an electrostatic field in the space around it. A steady current of charges (direct current, DC) creates a static magnetic field around it. The above fields contain energy, but cannot carry power because they are static. However time-varying fields can carry power. Accelerating electric charges, such as are found in an alternating current (AC) of electrons in a wire, create time-varying electric and magnetic fields in the space around them.
Suggestions for improvements are more than welcome. Good Luck with your project!!! Please vote if you like!