How to Make a Miniature Tesla Coil

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Introduction: How to Make a Miniature Tesla Coil

Tesla coil is a radio frequency oscillator that drives an air-core double-tuned resonant transformer to produce high voltages at low currents.Tesla's original circuits as well as most modern coils use a simple spark gap to excite oscillations in the tuned transformer. More sophisticated designs use transistor or thyristor switches oscillators to drive the resonant transformer.

Miniature Tesla coil also does a same work but it does not produce as much high voltages.

Now I am going to instruct how to make a miniature tesal coil with less number of components.

Lets Get Started..

Step 1: Components Required

22 gauge magnetic Copper wire - 30 cm [Banggood]

28 gauge magnetic Copper wire - 10 m [Banggood]

PVC Pipe [Diameter - 2cm ; Length 9cm]

Switch -1 [Banggood]

2N2222A Transistor - 1 [Banggood]

22K Ohm Resistor - 1 [Banggood]

9V Battery and Clip - 1 [Banggood]

Cardboard Sheet [10 x 10 cm] - 1

Step 2: Circuiting

1. Take pvc pipe and winde 300-400 turns of 28G copper wire.[Primary coil]

2. Apply tape at bottom and winde 4-5 turns of 22G copper wire [Secondary coil].

3. Now remove enamel of copper wires at end.

4. Solder 22k ohm resistor to the base of 2n2222 transistor.

5. Solder bottom end wire of primary coil to base.

6. Solder one end of secondary coil to collector.

7.Solder Positive terminal of battery clip to Switch and negative terminal to emitter pin.

8. Now solder another end of secondary coil and another pin of switch to the free end of 22k resistor.

9. Leave the top end wire of primary coil free in air.

Circuiting Completed

Circuit and Datasheets attached.

Step 3: Construction and Testing

Feel free to comment.

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33 Comments

it is not working ....i followed all steps u said ...what is error ? pls inform

Can we use 24 SWG coil for secondary coil

Can we use 24 SWG wire for secondary coil

Is the thickness of wire necessary ??? I mean, 22 G and 28 G are the necessary requirement ? Or any thickness can work ?

It's not working for me tansistor is too heating

2n2222a transistor is working in low current lod but in this Tesla coile current rating is high so is problem is comon
But u use 3-4 transistor in parallel so is working is good and heating problem is reduce

try connecting the transistor in the other way
i.e. try connecting the switch to the collector end and try connecting the secondary coil to the transmitter end

2n2222a transistor is working in low current lod but in this Tesla coile current rating is high so is problem is comon
But u use 3-4 transistor in parallel so is working is good and heating problem is reduce

can't we use the simple copper wire incited of the magnetic wire? as i am not able to find magnetic wire so can u tell me other name of wire which can be used to make this tesla?

please reply.....

U go to moter /fan and other winding reparing center and ask 26G laminated wire