How to Make a Mini Tesla Tower




Introduction: How to Make a Mini Tesla Tower

About: Hello Guys, I am techgenie, an Electronics hobbyists, tech tinker and developer. I dedicate my free time in designing and making various creative and innovative projects, RC toys, Incredible Gadgets, Awesome...

The concept of wireless electricity was introduced around 100 years ago and even today, it is one of the most fascinating and exciting topics for scientific research & development. It was the great scientist Nikola tesla, who actually demonstrated the transmission of electricity wirelessly.

In this Instructable, I decided to make a mini Tesla Tower (similar to a Slayer Exciter), that can power ON any Fluorescent or neon lights wirelessly. However, the concept of wireless electricity is quite different than the concept of slayer exciter. This device can only glow fluorescent and neon lights without actual transmission of electricity whereas wireless transmission devices actually transmit electrical power through electromagnetic Induction.

This is a great project for having fun, experimenting, demonstration in exhibitions and also showing magic tricks.

Step 1: Watch the Video

A video is a wonderful tool that provides deep insight to the procedure and makes it easy to follow. However, it is also recommended to visit next steps for additional useful details and images.

Step 2: Order Parts

  1. 2N2222A Transistor -
  2. Resistor 27k -
  3. 9v Battery -
  4. Battery Clip -
  5. Switch -
  6. Plastic ball -
  7. Hot Glue Gun -
  8. Soldering Iron -

  1. 2N2222A Transistor -
  2. Resistor 27k -
  3. 9v Battery -
  4. Battery Clip -
  5. Switch -
  6. Plastic ball -
  7. Hot Glue Gun -
  8. Soldering Iron -

  1. 2N2222A Transistor -
  2. Resistor 27k -
  3. 9v Battery -
  4. Battery Clip -
  5. Switch -
  6. Plastic ball -
  7. Hot Glue Gun -
  8. Soldering Iron -

From Home & Local Store - 28 AWG Enamel Copper wire, Hard Insulated Wire, PVC Pipe, Tape, Sandpaper, Aluminium Foil, Plastic base and connecting wires.

Step 3: Basic Principle of Operation

It is based on the principle of electromagnetic Induction. A high power switching transistor is used in the circuit that oscillates the low DC voltage at very high frequencies. The air-cored transformer coupled with a primary coil increases the low DC voltage to a very high AC voltage. A strong electromagnetic field is developed around the coil & the hollow sphere. When any fluorescent or neon light is brought closer, the electrons inside the light gets excited and hits the walls due to which the fluorescent lights glow.

Step 4: Make the Coil Tower

  • Take a 20cm PVC pipe of about 2.1cm diameter.
  • Wrap about 200 turns of 28 AWG enameled copper wire over the PVC pipe.
  • Secure the coil over the pipe using tape.
  • Remove the enamel insulation from both the ends of the wire using sand paper.
  • Wrap a ping pong ball in a piece of aluminium foil to make a hollow sphere conductor.
  • Insert one end of the wire inside the aluminium foil in the sphere conductor and secure it with tape.
  • Using Hot glue, paste the ball at the top center of PVC pipe.

Note: Make sure to refer to the images above or watch the video.

Step 5: Make the Tower Base

  • Take any plastic box lid and place the tower at the center.
  • Mark the position of the tower on the lid.
  • Mark three tiny holes around the tower and a big hole slightly away.
  • The tiny holes will be used to insert the wires and the bigger hole will be used for switch.
  • Insert the other end of the wire in the center hole of the base and secure it with hot glue.
  • Insert a hard insulated single strand wire into the first hole and use hot glue to hold it in place.
  • Wrap two turns of hard insulated wire around the tower.
  • Make sure that the direction of turns should be opposite to the direction of wire wrapped on the tower.
  • Insert the other end of the wire in the third hole.
  • Insert a switch in the bigger hole to manually control the power to the circuit.
Note: Use can use any drill or make a mini USB Drill at home to make these tiny holes just by watching the video.

Step 6: Connect the Components

  • Using hot glue, attach a 2n2222a NPN transistor at the bottom of the tower base.
  • Solder a 27k resistor to the base terminal of the transistor.
  • Also, solder the enamel wire from the secondary coil to the base terminal of transistor.
  • Connect one end of the primary coil to the resistor and the '+ve' battery terminal.
  • Connect the other end of the primary coil to the collector terminal of transistor.
  • Connect the emitter terminal to the '-ve' battery terminal.

Note: Make sure to refer to the circuit schematic attached above.

Step 7: Test and Debug

Our Wireless Electricity Station project is now ready. Connect a 9v battery and switch ON the circuit. When any fluorescent or neon light is brought close to the tower, it will glow. The brightness will be directly proportional to the distance.

In case the light fails to glow, these are the few steps you can take to ensure the proper working of circuit and rectify the problems:

  • Double check the circuit and make sure everything is connected properly.
  • Make sure to use a high power 9v battery because a normal 9v chinese battery will not work with this project.
  • In case the transistor gets too hot, reduce the no. of secondary coils or reduce the supplied power.

So Friends, this here concludes the instructable, stay tuned and SUBSCRIBE to get latest updates. In case, you might have missed, take a look at the video and see how made this mini Tesla Tower at home.

Thanks For Your Support..!!



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    29 Discussions

    I am guessing this project can also be used to sabotage technology,

    hence,it induces an electric charge.

    1 reply

    Hehe...Yes, i think so, but this project is very tiny to cause any harm.

    How many turns do I have to perform if I have 0.10 mm (38 awg) wire?

    Since I can not find the wire of the caliber that it indicates !.

    1 reply

    A turn ratio of 100:1 will work for any gauge of wire. However, it all depends on power supplied. Wind about 200 turns of wire and it should work with 9v 500mA power source.


    2 months ago

    OR, you can save the hassel of building a switching circuit and just disassemble a small power supply, probably have a 9 or 12 volt one lying around the house somewhere (those little bricks you plug into the wall). Open it up, solder a couple wires to the output of the transformer and you'vs bipass the switching regulater alltogeter. If you have a little electonics knowlege you can probably remove their regulator alltogether. After all, your point is to just get it to AC for the primary. It doesn't take much current. When I was a kid a friend of mine and I built a big one; 12 turn primary, 2000 turn secondary, 2-36 inch glass plate capacitors (also homemade), about a 2 inch sparkgap all all powered by a 12000 volt neon sign transformer. The neon sign transformer only put out about 30 ma. We never measured the Tesla coil output current but the voltage out was about 2,000,000 V. It was fun grabing the coil's electrode on the top and watching the sparks painlessly come out your fingers. Well painlessly until your foot accidently contacts the housing of the transformer, OUCH!!! So, for this projec: pretty any powersupply you find around the house will be good. They will probably be 300ma or better. That should be more than enough. It's a neat project. Thanks for posting it. I bet some people will have fun building it. It makes a cool science fair project or show and tell for science class.

    3 replies

    Thanks for the great tip and thanks for appreciating my work..:)

    Doesn't this circuit switch at the coils resonant frequency? If so I don't believe it would run off of 50 or 60 hertz would it?

    Not if you use one of the lightweight switching-supply type power bricks that run at something like 25Khz and likely produce a lot of harmonics at or near resonant frequency...

    Yes, you can give it a try but i don't think you would be able to wrap about 200 turns on a 10cm length but yes, you can surely overlap them.

    I want some little sparks on this.
    What changes or addition should I do in this..

    What are you talking about? Techgenie said that it is completely safe to touch the coils or ball.

    Never since it can cause burns in the hand.
    Hell no!!!!!!

    Yes, it is completely safe to touch the coils and the ball, if the project is powered by a 9v battery, however, the transistor can get very hot, so avoid touching it.

    GREAT JOB!!...