Tesla Coil For Sale

Welcome to SolarShopUS.com’s DIY Tesla Coil category! Here you’ll find a wide variety of Tesla coil kits, each with different sizes and functions. These kits are perfect for those who are interested in experimenting with electricity, as well as for those who simply enjoy the visual appeal of these stunning pieces of technology.

Our DIY Tesla coil kits are designed to be easy to assemble, even for beginners. Each kit comes with detailed instructions to guide you through the process. Whether you’re looking for a small tabletop Tesla coil or a larger, more complex coil for advanced experiments, we have something to suit your needs.

Not only are these Tesla coil kits great fun for children and adults alike, but they also offer a valuable educational experience. They can help you better understand the principles of electricity, magnetism, and resonance, and can even be used to perform impressive demonstrations.

So why wait? Browse our selection of Tesla coil kits today and start exploring the world of electricity and experimentation!

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Tesla coils are high-voltage, air-core resonant transformers that were invented by Nikola Tesla in the late 19th century. They are named after Tesla because he was the first to demonstrate wireless power transmission and to use the coils for various scientific experiments.

Components of a Tesla Coil

A Tesla coil consists of two primary circuits: a primary coil and a secondary coil. The primary coil is made up of a few turns of heavy wire, while the secondary coil has many more turns of thin wire. The two coils are usually wound around a hollow cylindrical core, called a toroid, that serves as a resonator.

How Tesla Coils Work

When an alternating current (AC) is applied to the primary coil, it creates a magnetic field that expands and contracts with the frequency of the AC. This magnetic field induces a voltage in the secondary coil, which causes a high-frequency alternating current to flow in the secondary coil. This high-frequency current creates an oscillating magnetic field that induces a high voltage in the secondary coil, which can be many times greater than the input voltage.

tesla coil function explained


The Tesla coil operates on the principle of resonance. Resonance occurs when the natural frequency of an object or system is matched by an external force. In the case of a Tesla coil, the natural frequency is determined by the inductance of the primary and secondary coils, as well as the capacitance of the toroid. When the frequency of the AC applied to the primary coil matches the resonant frequency of the system, energy is transferred efficiently between the primary and secondary coils.

Step-Up Transformer

The Tesla coil can be thought of as a step-up transformer, where the secondary coil is the output and the primary coil is the input. The voltage in the secondary coil is much higher than the voltage in the primary coil because of the increased number of turns in the secondary coil. However, the current in the secondary coil is much lower than the current in the primary coil because of the thin wire used in the secondary coil.

Spark Gap

A spark gap is usually included in the primary circuit of a Tesla coil. The spark gap is a switch that allows the high voltage in the secondary coil to discharge to the air, creating a spark. This spark helps to discharge the energy that is built up in the secondary coil, allowing the system to oscillate at the resonant frequency.


In conclusion, Tesla coils are fascinating devices that use resonance and electromagnetic principles to create high-voltage, high-frequency electrical discharges. They have been used for a variety of purposes, including scientific experiments, entertainment, and education. Despite their relative simplicity, Tesla coils continue to captivate and inspire people around the world.


A Tesla coil kit is an excellent gift for anyone who is interested in technology

Building a Tesla coil kit provides a hands-on learning experience that allows people to better understand the principles of electricity, magnetism, and resonance. They will gain practical experience working with electronic components, reading schematics, and following instructions. This can be especially beneficial for students and hobbyists who are interested in science, technology, engineering, and mathematics (STEM) fields.

Fun and Entertainment

Tesla coils are fascinating devices to watch in action, creating spectacular electrical arcs and impressive sound effects. They make great conversation starters and are sure to capture the attention of anyone who sees them in action. Whether used as a decorative piece or for educational purposes, Tesla coils are sure to provide hours of entertainment.

Customization and Personalization

Tesla coil kits come in a variety of sizes and designs, allowing people to choose the one that best suits their interests and skill level. Some kits may include additional features, such as adjustable frequency or LED lighting, that allow people to customize their Tesla coil to their liking.

DIY Satisfaction

Building a Tesla coil kit provides a sense of accomplishment and satisfaction that comes from creating something with your own hands. It's a great way to develop problem-solving skills and to feel a sense of pride in your work.

Suitable for All Ages

Tesla coil kits are suitable for both children and adults, making them a great gift for anyone interested in technology. They provide a safe and educational way to explore the world of electronics and are a fun activity that the whole family can enjoy together.

Overall, a Tesla coil kit is a unique and thoughtful gift that combines science, technology, and creativity into one fascinating package. It's sure to inspire curiosity and creativity in anyone who receives it, making it an excellent choice for anyone interested in technology.

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