Very Simple 9v Tesla Coil

Hello friends, my name is Deepesh. We are going to make a very simple tesla coil that can be operated by a 9v battery. This is my first Instructables so if I made any mistake then let me know

Step 1: Gathering the Material

1. copper or magnetic wire
2.small diametre pcb pipe or any round pipe on which you can coil the wire it can be of any material other than iron
3.transistor 2n2222a
4.22kilo ohm resistence
5. 9v battery and its cap
6. a switch
7.a base
8.some wires
9.soldering equipments

Step 2: Making the Coil

take the pcb pipe approximate 10 to 15 cm of height now round the copper wire on it and start coiling and tape the both ends so it does not uncoil by itself . Now you have got a coil with two ends

Step 3: Joining With Transistor

now fix your coil at the middle of the base.now dont forget to burn off or to scrape of the insulation from the endS of the coil. take a transistor and solder the lower wire of the coil to the base pin of the transistor and also solder one end of the 22 k ohm resistence to the base pin

Step 4: Adding the Switch

now solder the other end of the resistance to the one point of switch you can also use a spdt switch

Step 5: Adding the Secondary Coil

take a peice of wire and coil it around the primary coil thrices. now you get two ends of that wire and solder one end of the wire to the collector of the transistor and the other end to the switch with the resistence

Step 6: Adding Power Supply

Solder the positive end of the battery cap which is red wire to the another point on the switch and negative end which is black wire to the emmiter of the transistor.NOW IT IS READY

Step 7: Testing

to test take a low watt cfl or a 6w to 8w flourocent lamp often called a tubelight .install a battery ,turn on the switch and bring it near it you will see that it will glow without any connection between them

Step 8: How It Works

The Tesla coil works with the principle of Electromagnetic
Induction. According to this, when a conductor is placed under a varying magnetic field, a small current will be induced inside the conductor. For a Tesla coil, this conductor will be called the secondary coil and the varying magnetic field will be produced by the primary coil by passing an oscillating current through the primary coil. A primary coil will have an oscillating current and hence will produce a carrying magnetic flux around it. Now, this coil is wound around the secondary coil, and hence according to the law of electromagnetic induction, a voltage will be induced in the secondary coil. Since the number of turns in the secondary coil is very large than the primary coil, this voltage will be a very high voltage and hence this coil will have a very strong electric flux around it that is powerful enough to glow normal CFL bulbs and is used in Wireless Power Transmission.