How to make a mini Tesla coil

This video tutorial from MFH youtube channel will show us in a simple way how to build a mini tesla coil, a small transformer capable of ionizing the air and producing effects as curious as turning on a bulb or an LED “from a distance”, something which for its apparent simplicity seems “magical”.

It is a very simple and entertaining project, especially for the little ones in the house, it can awaken in them an interest in science which they did not have before.

Materials to make a homemade Tesla coil.

The materials needed to make a scale Tesla coil are:

  • Base on which to install components. A plank of wood may suffice.
  • A 9V battery with a connector.
  • A transistor (2N2222A).
  • A 22k Ohm resistor.
  • A switch.
  • PVC pipe.
  • Copper wire.
  • A small balloon.
  • Aluminium foil.
  • Tape.
  • Cable to connect or solder everything.

The result can be tested with different bulbs and LEDs, which will light up in a variable manner depending on their size, power …

Instructions for making a Tesla coil.

What is a Tesla Coil.

A Tesla coil is a type of resonant transformer, which inventor Nikola Tesla patented in 1891.

The Tesla coil is made up of a series of coupled resonant electrical circuits. Normally, Tesla coils create electric shocks with a range of several meters.

This coil consists of a power supply, an electric capacitor, a coil transformer and a set of electrodes for the spark to jump in the air.

It is a device used in the most diverse applications, from the particle accelerator to televisions and toys.

The Tesla coil, as we have seen before, can be made of readily available materials in electronics stores or stores of recycled or reused materials.

Precautions when using the Tesla coil.

Tesla Coils producing dangerous levels of high frequency current and high voltages. These electric shocks can cause severe external and internal skin burns, char the skin, generate involuntary muscle spasms, induce ventricular fibrillation, lead to pacemaker problems and other issues.

Keep electronic devices away from the coil. Do not connect the coil if you are not under the supervision of a teacher or an elderly person who knows the dangers of high voltages.

In this article, we share a fascinating archive of all patents filed by Nikola Tesla, available at the US Patent and Trademark Office.