Electrical Engineering Stack Exchange
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Questions tagged [tesla-coil]

A Tesla coil is an electrical resonant transformer circuit invented by Nikola Tesla around 1891. It is used to produce high-voltage, low-current, high frequency alternating-current electricity. Source: https://en.wikipedia.org/wiki/Tesla_coil

A Tesla coil is an electrical resonant transformer circuit invented by Nikola Tesla around 1891. It is used to produce high-voltage, low-current, high frequency alternating-current electricity.

Tesla coils can produce higher voltages than other artificial sources of high-voltage discharges, electrostatic machines. Tesla experimented with a number of different configurations consisting of two, or sometimes three, coupled resonant electric circuits.

Tesla used these coils to conduct innovative experiments in electrical lighting, phosphorescence, X-ray generation, high frequency alternating current phenomena, electrotherapy, and the transmission of electrical energy without wires. Tesla coil circuits were used commercially in sparkgap radio transmitters for wireless telegraphy until the 1920s, and in medical equipment such as electrotherapy and violet ray devices. Today their main use is for entertainment and educational displays, although small coils are used as leak detectors for high vacuum systems.

Source: https://en.wikipedia.org/wiki/Tesla_coil

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Is this video fake? I thought Tesla coils only worked on AC

This video shows a 9-volt battery connected to a wire as a primary. The first reason I think this is fake is that he is powering a Tesla coil with 10 volts. The second reason is that Tesla coils work on AC, or at least I thought so, and he wouldn't…
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How to overcome transistor heat in slayer exciter?

I build this circuit and it works but I have two problems. The major problem is that the transistor becomes very hot quickly. I burnt my transistor due to excessive heat. How can I get rid of the very high temperature of the transistor. The second…
Michael George
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Why do single transistor oscillators work to power a transformer, if a transformer needs AC?

I have been making some high voltage projects lately, such as a spark gap Tesla coil, slayer exciter, and a flyback transformer HV supply. The flyback transformer uses a single transistor circuit, just like the slayer exciter circuit. I know that…
ladiesman217
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Is it possible to measure lightning discharges as Nikola Tesla?

Nikola Tesla stated in his patent, Art of Transmitting Electrical Energy Through Natural Medium, that he used sensitive instruments to measure lightning discharges: In the course of certain investigations which I carried on for the purpose of…
Marino Klisovich
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How does this tesla coil design work?

Those mini tesla coils were always interesting to me, as they can be battery powered while still producing voltages well into the 10kV range, which lights up fluorescent bulbs and destroys electronics. Most of the designs I found were based on the…
intelpeas
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Working of miniature Tesla coil?

Can anyone explain the given circuit. I seem to have done it and its perfectly working. But can someone explain the principle/theory and working behind this circuit from when the switch is turned on.. And I also didn't connect the LED If I bring a…
Hayagreev S
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How does this Miniature Solid State Tesla Coil work?

Here are the schematics What is the use of> -Transformer (I assume it is providing higher voltage? and what does it do) -Transistor (Is it common emitter? and what does it do) -LED (What does it do?) I do not need this for homework, I was just…
Triak
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Tesla coil and Tesla tower

What exactly is the difference between Tesla Coil and Tesla Tower? What does the tower do? How does it affect the propagation of electric energy? A Tesla coil can generate voltages of high potential. I have seen videos of how this thing works but…
Marino Klisovich
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Tesla coil, where do the sparks from the secondary coil ground to?

This might be an obvious question, but I was wondering how a Tesla coil emits sparks that's seem to complete a circuit in thin air, and how one end of the secondary completes a circuit with the other side of the secondary. Is this circuit simply…
user191893
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Can a Tesla coil's secondary wiring overlap?

I am building a small tesla coil just as a proof-of-concept using a bug-zapper circuit. I unwound some enamel copper wire off a transformer and put it on my 12 cm length x 2 cm diameter PVC pipe and realized that after winding the first time, I…
Misha
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Tesla coil produces AC or DC spark output?

In a standard AC Tesla coil, the output spark from the dome (torus) at the top appears to come out in a steady, constant stream. However, since the AC on/off/reverse function of the AC current in the primary coil causes a similar on/off/reverse…
user32016
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Will overlapping a few wires on a Tesla coil affect its performance?

When winding my secondary coil I accidentally overlapped a couple wires (~10 out of 900). I know that you can't overlap wires because the voltage drops but is overlapping just a few wires okay?
HARISH RAM student
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How can we measure the voltage at the coil of a Slayer Exciter?

How can we measure the voltage at the coil of a Slayer Exciter? We have built a simple 9V Slayer Exciter for a school project. We are examining the conservation of energy at the transformer. The Slayer Exciter works fine: when held in front of it, a…
user3505506
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Can this part of the slayer exciter circuit be disconnected?

Basic Slayer Exciter The rest of the circuit makes sense, however I am wondering if this wire can be disconnected from the circuit. If a charge is being accumulated at the "275", where it will ultimately discharge as an arc, why is it necessary to…
GeV
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Tesla coil miniature model (slayer exciter) parasitic capacitor

I have been trying this miniature Tesla coil based on Slayer's exciter circuit (shown below). The part that I don't understand is how this parasitic capacitor exists? I know that for a capacitor there needs to be 2 opposite charges separated by a…
Bhuvanesh Narayanan
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