Tesla Coil Science Kit

Tesla Coil
Tesla coil is a type of resonant transformer circuit invented by Nikola Tesla around 1891. It is used to produce high voltage, relatively high current, and high frequency alternating current electricity.
How Does the Tesla Coil Work?
The power of the Tesla coil lies in a process called electromagnetic induction, i.e., a changing magnetic field creates an electric potential that compels current to flow. Conversely, the flowing electric current generates a magnetic field. When electricity flows through a wound up coil of wire, it generates a magnetic field that fills the area around the coil in a particular pattern, shown by the lines in the picture.
Materials Required:
Magnetic copper wire
22 K Resistors
2N2222 Transistor
LED
Ordinary breadboard wire
Any nonconductive cylindrical object
12V Battery (or 12V adaptor)
Vero board
Fluorescent Tube Light
Circuit Diagram and Explanation: This Mini Tesla Coil Circuit is very simple and just works with a help of 12V and very few commonly available electronic components, which makes it is very easy to build. This design is very simple and only uses four components. It is also very versatile and the input voltage can be as low as 5 volts or higher than 12 volts if the transistor is attached to a heat sink. The circuit diagram of Mini Tesla Coil Project given below is very simple. So let us understand how it works and learn how to build it. The main component in this circuit is the secondary coil, which is made by winding a magnetic wire around a cylindrical object (any non-conductive object will work). A high current high frequency transistor like 2N2222 is used to supply current through the primary coil. The whole set up is powered by a 12V as shown. The positive end of the battery reaches the collector of Transistor through the primary coil, and the emitter is grounded. This means that whenever the transistor conducts, current is flown through the primary coil. The LED diode and one end of the secondary coil is also connected to base of transistor to make the circuit oscillate, this way the transistor will send a oscillating current into primary coil. So, with this arrangement we have a primary coil which 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 a according to 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 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.