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

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67 views

Can we use Litz multi-strand wire as Tesla coil secondary?

I am making a mini Tesla coil as a proof of concept. I was thinking, can we use multiple enameled copper wires as the secondary? (Edit: Every wire is individually enameled and the ends sanded to ...
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Can anyone check this circuit for a musical Tesla coil for me?

The attached circuit diagram is the one I will be using to make my musical Tesla coil for a project. The AC source on the right is the audio input through AUX, and the circuit will probably run around ...
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54 views

Slayer exciter not working

My issue I have recently been looking at a circuit named a "slayer exciter". From what I have read it is a form of SSTC (solid state tesla coil). I found a good video about it on youtube ...
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Is there a safe way to operate any type of a tesla coil on a functioning modern car (moving road vehicle)?

(Updated with clarifications) Could a tesla coil be safely built, installed and operated on an active road vehicle which is driving a regular city street? Let's say we want the discharges to be 20-...
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28 views

Beginner Tesla coil help [closed]

I’m building a Tesla coil. I just have a few questions. Is it powered off of ac or dc ( I have seen mixed awnswers) , does the amount of loops with the secondary coil matter on the circuit, would a ...
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41 views

Transistor heating problem in slayer exciter circuit

i made this project but it is not working and the transistor is heating up very fast, i couldn't find anything regarding this specific project but as far as i understood i should maybe use another ...
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22 views

Half Bridge Bootstrap configuration using IR2184 Gate Driver

I am planning on building a half bridge inverter for use as a tesla coil driver, using a couple of IGBTs, with gates driven by an IR2184 half bridge gate driver. According to the data-sheet, the ...
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2answers
44 views

When building a Tesla coil, is it possible to use the primary and secondary coils of a second transformer in place of the usual coils?

I am trying to build a Tesla coil. I have a neon sign transformer and a couple of microwave oven transformers. I am trying to understand why using the coils of an additional transformer to act as the ...
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60 views

Can i use welding cable as primary coil for Tesla coil?

I am trying to make DRSSTC (see NOTE1) and struggle to find copper tube for my Tesla coil, so I'm looking for other stuff that I can use for the primary coil. Now I think, can I use welding cable like ...
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40 views

DIY 3 V -16 V, 300 watt boost converter for ultracapacitors

I am trying to build a power supply for a portable Tesla coil project using 6 × 3000 farad supercapacitors in series (16.2 V @ 500 F). I am trying to maximize the usability of the supercapacitor ...
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3answers
146 views

Why does the positive wave of my class AB amplifier output get clipped far below rail voltage?

For the past 6 months I've been designing and building a 30W 3MHz audio modulated Tesla Coil driver. For this, I've created a +-15V linear regulated power supply, an AM modulator using an MPY634, and ...
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66 views

Skin effect at high voltage

I recently made a slayer exciter circuit in order to determine the resonant frequency of my secondary coil of my yet to build SSTC. When running the slayer exciter at 40V DC the circuit consumes ...
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82 views

Slayer exciter 2N3055 to 2N3716, what can explain these behaviours?

I built a slayer exciter with a 2N3055 from which I can pull 1.5" arcs at ~30V (tried base resistors ranging from 20-30kohm). I was planning to run it at a higher input voltage than the 2N3055 can ...
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56 views

Generate identical positve going and negative going pulses/spikes at the same time

I am interested in building a circuit to generate a sharp positive pulse and an identical negative pulse at the same time with a peak of about 10 to 200 V. So when I say sharp I would like a rise time ...
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36 views

How do I avoid a high DC current flowing through mosfet in my SRSSTC tesla coil?

There are 6.48 amps flowing through the mosfet but only 12 mA through the capacitor, L2 would be my tesla coil primary. How can I reduce the amount of components in my circuit and improve its ...
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27 views

Initial conditions in multi-state Tesla Coil circuit

Half a year ago I posted this quesion about a Tesla Coil resonant circuit which got an amazing answer that helped me understand the resonant frenquency of such circuit. Now I've returned to that ...
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166 views

Tesla Coil not working

I made a simple miniature Tesla Coil following a youtube tutorial (https://youtu.be/AehL3BodduE) As you can see in the photos, I 3-D printed a PVC pipe like piece and wound two copper wires one over ...
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1answer
409 views

Slayer exciter(Mini Tesla Coil) Not Working[IRFZ44N]

I made a tesla coil as https://www.youtube.com/watch?v=Ca2e3evwVK0 's circuit. the MOSFET seems to be getting hot and current passes through the primary but I get no response from the secondary. ...
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3answers
712 views

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. ...
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1answer
60 views

Filttering noise out from high frequency 1MHz oscilator (Teslacoil driver)

I have a 74HCT14N based ''RC'' square-wave oscillator. The produced signal then goes to PMIC gate-driver and finally to a mosfet which drives the primary coil at resonant frequency. (about 930-1000kHz)...
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103 views

My slayer exciter circuit doesn't work properly

today I tried to make my own Tesla coil circuit according to the schematic below, except that I have changed the number of turns on the secondary and primary so could get a higher output voltage (1 to ...
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1answer
103 views

Coil Damage Worries [duplicate]

I was trying to make a hv generator from an ignition coil. I bought one from the local mechanics, and put it in a circuit in series with a capacitor and a light dimmer connected to mains 240v. The ...
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70 views

Transformer testing

I connected an ignition coil to 240v in an attempt to make a Hv generator. The ignition coil was connected I series with a capacitor and light dimmer. When turned on the ignition coil did nothing at ...
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1answer
715 views

Design considerations for bifilar coils for Wireless Power Transfer

I found many different DIY videos and posts demonstrating the concept of wireless power transfer using inductive coupling, however, they have limited explanation on theoretical calculations and design ...
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238 views

Wireless Electricity Transmission model not working. Why?

I made wireless electricity transmission model using the principle of magnetic inductive coupling to transfer electricity between two separate coils. The model is very simple, known to everyone and ...
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4answers
2k views

How can I safely determine the output voltage and current of a transformer?

So I am building a Tesla coil with my partner for a senior design project. We safely ripped out a transformer from a microwave oven. However, after a good amount of research, we were unable to find ...
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516 views

Mini slayer exciter (tesla coil) not working

I recently built this tesla coil, and I've tried many different setups, but for some reason, I can't quite figure out why it won't work. simulate this circuit – Schematic created using ...
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4answers
923 views

Is it possible to measure lightning discharges as Nikola Tesla? [closed]

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 ...
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207 views

AUX input or microcontroller in a musical tesla coil?

Alright so I am making a musical tesla coil. I have seen some online tutorials and what I noticed is that some people are giving the audio input using a microcontroller and programming it to produce ...
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165 views

Which is the suitable toroid ring to wind the gate drive transformer of a SSTC?

I found this “ferrite” (i’m not sure if its ferrite) ring from a SMPS. A choke, to be specific. It’s made of black- grey, very hard, brittle material. Lower density than a solid iron ring. Is it OK to ...
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311 views

Where does the other end of the secondary in a solid state tesla coil connect?

Yes, i know it's a very elementary question, it's my first time build. All circuits shows that the not- sparking end of a sstc is connected to ground, but exactly where? do they mean the LITERALL ...
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265 views

Does the lack of a primary DC blocking capacitor cause my tesla coil driver to explode?

Lately I've been tinkering with an SSTC half-bridge driver. I've ran a couple of tests using relatively low input voltages ~50V and the IGBTS seemed to do fine, there was no noticeable heating at all. ...
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2k views

Tesla coil troubleshooting help

I'm trying to make a Tesla coil with approximately 200 turns in the secondary coil using 28 gauge enameled copper wire. My primary coil has 3-6 turns with a thicker wire. I've made all the connections ...
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605 views

Tesla coil - my primary circuit doesn't work

I would like to make a Tesla coil, so I bought a 10 kV 120 W 30 mA neon sign transformer from Aliexpress. First potential problem, while playing with it, I noticed that when it stops ...
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104 views

Capacitors discharging into Coil

I have 2 capacitors charging in parallel and then switching them in series to discharge into a wound coil of known inductance. My capacitors are 4nF 2000V and the charging voltage is 1000V. So at the ...
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1answer
84 views

Inductive Charging 2 layer coil transfer to 1 layer receiver. Any issues?

I am looking to incorporate a inductive charging mechanism into a project I’m working on. On the receiving side I only have room for a single layer coil design. For my transfer side I have more ...
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2answers
110 views

Interrupter on induction heater

Im currently trying to control the power of my induction heater, i want to use an interrupter to control it. but if i now interrupt the driver at random points, the mosfets wont turn off at zero ...
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39 views

Low Voltage Marx Generator Switch

I have a low voltage Marx generator which is connected to a coil inductor, eventually forming an LC oscillator. I want to find a way to switch the circuit on, but because the voltage is low I cannot ...
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2answers
517 views

Slayer exciter with darlington pair

I've been playing around with the well-known slayer exciter, and trying to make a tesla coil. The standard 1 transistor setup works fine for me, but the arcs I'm getting are pathetic, and it can ...
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68 views

Measure if Tesla coli is safe

I am planning to buy a Tesla coil from Alieexpress. When it arrives I wonder what are measurements I could take to make sure iit is safe. For example: how/where can I measure if the primary coil and ...
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409 views

Tesla Coil Troubleshooting Help! [closed]

A couple weeks ago I decided to build a tesla coil and after a decent amount of research and building time the coil could only light up a light bulb. I have tried many things to fix it but all to no ...
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1answer
89 views

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 ...
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330 views

where is the closed path in tesla coil?

I saw a bunch of videos about Tesla coil which works on like an air cored transformer producing high voltage but could be figured it out how exactly it works I mean if we bring a tube light, lamp then ...
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410 views

Questions about Tesla coil (SGTC), spark gap and resonance

If I use a step up transformer (flyback for example) for primary to boost the voltage to 10 kV which (flyback) has a resonant frequency around 30-50 kHz, and the primary coil has a res. freq. of 500 ...
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1answer
280 views

Spark Gap for a Tesla Coil with 9-18v battery

I’m working on a university project where I’m building a modest tesla coil formed by a 20cm length secondary and a primary of five loops around the secondary. I need to make a spark gap in my circuit ...
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168 views

Is it feasible to make a musical tesla coil [closed]

Ive built a couple tesla coils so far, both a slayer and a spark gap (nothing overly complex). I'm still a student so I dont know a ton about electronics but I have a decent foundation. Has anyone ...
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561 views

Need a little help with a Chinese tesla coil

I bought a little tesla coil kit that can play music. I soldered it all up, and a friend of mine distracted me at the last second when I was hooking it up... I blew the original "BD243" transistor up ...
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2answers
753 views

Can the primary coil of a Tesla coil be inside the secondary coil?

I'm building a Tesla coil and the secondary coil (about 800 turns of 0.85 mm diameter enameled copper wire) is wrapped around a cardboard tube (about 8 cm diameter and about 1 m long). I was planning ...
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448 views

Voltage through resistor connected to tesla coil

I have been reading up about tesla coils and wondered what happens in a tesla coil circuit. If I have a tesla coil producing around 40KV in close proximity (around 10mm spark gap) to a metal pin ...
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1k views

Slayer exciter not working help

I recently made a slayer exciter by using the circuit diagram attached. But my exciter is not working and I have a question. Is primary coil supposed to be wound the opposite direction as second coil?...