Wireless Power Transmission: How to Make a Tesla Coil

By Jeff Salim

wireless power transmission tesla coil


Hello all!! How many auto mechanics does it take to change a light bulb? Answer: Two. One to screw in all the bulbs he has until he finds one that fits, and another to tell you he thinks he’ll have to replace the whole socket. Jokes aside, light bulbs don’t even need a socket to work. Don’t believe me? Once you have followed this article to make your own wireless power transmission system, you will. In this tutorial, you will learn all the parts you need and how to put them together to make a small  Tesla Coil. A Tesla Coil is a device that creates a high voltage electric field in the air around it when a small input power is provided and allows for wireless power transmission.

How Does it 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 off to the side:

WARNING : High Voltage

Wireless power transmission tesla coil

Unlike some other high voltage experiments, a Tesla coil’s streamers can be very harmful. learned this the hard way. If you are shocked by the streamers, you will not feel pain, but your circulatory and nervous system can sustain severe damage. DO NOT TOUCH IT WHILE IT IS ON UNDER ANY CIRCUMSTANCES. We are not responsible for any property damage or injuries incurred if you attempt this project.

Required Materials

wireless power transmission tesla coil

  1. A length of 30 cm, PVC (the longer the better)
  2. About 300 feet of 24 AWG copper enameled wire (Secondary Wire)
  3. Birch Board for base
  4. 2222A Transistor
  5. Hookup(primary) Wire – 22Gwg Solid
  6. 22k ohm Resistor
  7. Switch and connecting wires
  8. 9V Battery

wireless power transmission tesla coil





Step 1: Wind the Secondary First, then the Primary!

wireless power transmission tesla coil

Secondary winding (Golden Wire)

wireless power transmission tesla coil

Primary winding at the bottom (Green Wire)

Put a small slot into the top of the pipe to wrap one end of the wire around. Slowly and carefully, begin to wrap the coil, making sure that you don’t overlap wires or have spaces. This step is the hardest and most tedious part, but taking a lot of time will yield a very nice coil. Every 20 or so turns, put a ring of masking tape around the coil to act as a barrier if the coil starts to unravel. Once finished, wrap a tight piece of tape around the top and bottom of the coil and spray it with 2 or 3 coats of enamel.


Step 2: Connect the Wireless Power Transmission System

wireless power transmission tesla coil

Wireless Power Transmission (Tesla Coil) Circuit

Connect the primary and secondary to the battery and switch through the transistor and resistor as shown in the circuit diagram. The smaller winding in the diagram is the primary and the longer winding is the secondary. You can additionally add an aluminum sphere on top of the pipe and connect the open end of the secondary to it, which will act as an antenna. Be very careful not to touch the secondary while the power is switched ON.

Step 3: Start Up Your Tesla Coil!

wireless power transmission tesla coil

Bring your Tesla Coil outside for its first run, as it really isn’t safe to run anything this potentially powerful indoors. Be careful, there is a risk of fire. Flip the switch, bring a tube light or a CFL bulb near your wireless power transmission device and enjoy the light show!

You can watch how my coil works in this video:



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Showing 16 comments
  • suresh

    Why use for transistor & resistor

  • Koushal

    Not working plz help me I have tried 945 times

  • Vijay

    Can we use bd135 transmiter instead of using 4444A transmiter

  • Vivek kumar

    Which law follow by tesla coil.why it useful.what role play transistor and resistor.

    • Kartik

      It works on mutual induction


    Bt my coil isnt working…i don know why

  • Clayton

    What diameter PVC did you use?

  • Sandul

    Can we use transistors and resistors of a different value???

  • John

    I have tried this numerous times with my son — who wanted to build one for his science fair — and just cannot get it to work. I have used a volt meter to make sure that I have flow and confirmed that to be the case, but I just am not getting this to work. I have seen PVC height vary in different examples. Where am I going wrong?

    • Ben

      You may have the polarity of you primary coil backwards. Reverse it and try switch the power on again.

  • daniele

    hi, i wish to thank you for this fantastic project. how can i watch the video on youtube? please help me :) .

  • Abdul Ghaffar

    Sir can u plz help me with the theory behind it?
    What are the power losses here?
    How a tube light is taking energy from flux lines?
    Is it necessary to use a dc tube light?

  • aswin

    can we use any other resistors other than 22k
    10k or 15k

    • Sudip Pradhan

      No, you can’t. But you can keep them in series.

  • Jeff Salim


    • Monkey d luffy

      Kaizoku Oni ore wa naru

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