How to Make a Miniature Tesla Coil

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About: HI! I am Junez Riyaz, currently doing Bachelor of Technology in the field of Electronics and Communication Engineering. I am much interested in inventing something new yet from my childhood. In my leisure ti...

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.

For more projects subscribe my youtube channel [Click Here]

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    44 Discussions

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    alana136

    Question 3 months ago on Introduction

    enamelled or non enamelled copper wire ?can use

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    Tanesh

    Question 5 months ago on Introduction

    sir, i did everything but still it is not working

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    TMTiger

    6 months ago

    I have done everything told and the circuit is also fine. But the coil isnt working. Any possible reason???

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    TMTiger

    Question 6 months ago on Step 1

    What if instead of 22k i use 5.6k ohms???
    What change would be seen...
    Does it still work???

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    Tech Hunt

    12 months ago

    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

    1 reply
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    kajalp5Tech Hunt

    Reply 8 months ago

    i m using transistor BC547 because they say that 2n2222a is not available here and now my Tesla coil is not working. could transistor be the reason for the non - functioning of the coil ?

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    BiharB

    Question 8 months ago on Step 1

    what is the volt of 22k resitance for mini tesla coil

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    flmjxfighter

    Question 9 months ago

    can it burn paper

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    KarthicP

    Question 9 months ago

    enamelled or non enamelled copper wire ???

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    Rocky JohnR

    Question 9 months ago on Introduction

    hi. can i use 22 both in primary and in secondary coil?

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    TylerD90

    Question 10 months ago on Introduction

    Would it be a great generator to power your household items?

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    PiyushP49

    11 months ago

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

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    Vinitshah

    11 months ago

    Can we use 24 SWG coil for secondary coil

    0
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    Vinitshah

    11 months ago

    Can we use 24 SWG wire for secondary coil

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    Mad_max_aryan

    11 months ago

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

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    Tech Huntkrnsinhs

    Reply 12 months ago

    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

    0
    None
    Ramanath Paikrnsinhs

    Reply 1 year ago

    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

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    GauravM76

    1 year ago

    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.....