Tesla coils are just a coil of wire with large number of turns wound close to one another on an plastic pipe. The coil with the large number of turns is called the secondary coil.
A primary coils is wound on the secondary coil. The primary coil is usually in few number of turns.
The primary coil takes in flunctuating alternating current in and then it's stepped up by the secondary coil.
The secondary coil steps up the magnetic field induced into the primary coil and produce high voltage with sparks.
The Tesla coil is capable making fluorescent bulbs iluminate without a power source, make LEDs light up wirelessly without connecting to any power source and many other amazing things.
Materials and components.
Here are the lists of materials you will need in making a Tesla coil.
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- 2N2222A NPN transistor
- 22k ohms resistor
- 22 AWG enameled copper wire
- Aluminum sheet
- Tennis ball
- Plastic pipe.
- 9V battery
- On/off SPST switch.
- Connecting Wires
- Thick cable for primary coil
- Ply wood
- Four plastic stands
- Iron ring.
Circuit diagram of a Tesla coil.
Tools and instruments needed.
- Soldering iron
- Solder lead
- Utility knife
- Sellotape
- Hand drill
- Hot glue gun.
How does the Tesla coil works?
Tesla coils works just like transformers. Even you can call it a transformer, their difference is than an AC transformer is made of a soft iron core unlike the Tesla coil which uses a plastic core. Also the Tesla coil has it's secondary coils wrapped over the plastic pipe very close to each other but a normal transformer is wrapped onto it soft iron without considering overlapping.
So when an high frequency alternating current is passed into the primary coil of a Tesla coil, the coil creates a varing high frequency electromagnetic field. The secondary coil captures the primary Coop's produced field and steps it up into thousands of volts, and at the same time it produces strong electromagnetic field which can iluminate bulbs and induce current in nearby coils, causing electromagnetic induction.
The 2n2222A, Bipolar Junction NPN transistor switches on and off AC current rapidly with high frequency, thus it converts direct current from the battery into high alternating current needed to produce varying electromagnetic field.
Have a nice project!☺️
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DIY