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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46 views

What are the effects of small spark gaps on connectors?

I was reading about the '4th Pin' problem that effects almost all modern iPhone users. It is where the 4th pin on the lightning connector turn black and eventually will not work until it is scraped or ...
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76 views

IR2110 output voltage problem

I have been working on a half bridge Tesla coil circuit. In process of building the Tesla coil, I have come across some problems. First of all, I’m using the IR2110 gate driver IC to drive the MOSFETs....
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49 views

How the feedback circuitry of a Tesla Coil works?

I have a project to do in school which is a DIY musical Telsa Coil and I need to build the hardware. I searched on the Internet and found these 2 schematics: My schematic is completely different from ...
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37 views

How to bring a transformer's secondary impedance to the primary side with k < 1?

I know that when I have a transformer with a coupling coefficient of 1, I can use the formula Z' = Z × (N₁ / N₂)². How could I calculate this impedance with a ...
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39 views

Using 74HC14 to invert a signal for HIN and LIN pin on IR2110

recently ive been working on a sstc solid state tesla coil project.I am using IR2110 gate driver ic for driving my IRFP450 N-channel mosfets in half-bridge configuration.so the IR2110 ic have two ...
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73 views

Slayer exciter not drawing from supply

I made a Slayer exciter according to the schematic below. I have done about everything necessary for it to work such as sanding the bottom of the secondary. I have 2000 turns on secondary, and 7 on ...
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29 views

How to measure which spark gap is firing, in a type of Tesla coil, using an Arduino

Firstly, I am teaching myself electronics and do not know all the lingo at this point in time. With that said, I have conceptualized a fun(?) project in the back of my mind which consists of multiple ...
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47 views

Using Circuit of Plasma Globe to Power a Tesla Coil

I had this old plasma globe laying around so I opened it up and found what I think is a ZVS circuit(I have ZERO knowledge of high voltage electronics and I may be wrong). I also have a wound tesla ...
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49 views

How can I play midi on this tesla coil?

I've made several small tesla coils, however I wanted to buy one that was compact and powerful, so I bought this one. I'm assuming it is a drsstc, since it has a half bridge of mosfets or igbts, which ...
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1k views

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, ...
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55 views

Plasma damage to body cells

Can exposure to plasma or energy from Tesla home windings damage the body's cells? More generally, will the plasma or energy from the Tesla coil ionize?
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94 views

What happens if a small Tesla coil is fed with a powerful Neon-sign transformer?

It is typically recommended to use a big neon-sign transformer (NST) for a physically big spark gap tesla coil. Assuming the primary and secondary of a small tesla coil are tuned to have resonance on ...
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21 views

Using transformer that have same frequency with resonant frequency of primary coil for tesla coil

Sorry im still beginner at electronic. So im thinking if we use spark gap just for trigger primary coil oscillating at resonant frequency, can we just use transformer that oscillating at primary’s ...
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32 views

How to rederive the formulas for parasitic capacitance of a spherical tesla coil topload

I wanted to prove, or rederive, the formulas for parasitic capacitance of both a toroidal topload, and a spherical topload used for a tesla coil. I thought I'd start with the spherical because the ...
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3answers
89 views

Why does a Tesla coil secondary need intermittent excitation to achieve resonance?

I have been reading about Tesla coils and their principle of operation - if I have understood correctly - after the primary is sufficiently charged, its circuit is closed (by means of a spark gap or ...
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53 views

Can I make a tesla coil with this setup?

I had an old plasma globe and I ripped it apart to find a flyback transformer and some other components. I am not sure what type of circuit this is but I want to make it into a tesla coil. I wound a ...
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90 views

Musical Tesla Coil / Slayer Exciter - Electrolytic Capacitor

Can somebody of you tell me, why the upper capacitance in this musical tesla coil needs to be an electrolytic capacitance? Tesla Coil audio music player circuit analysis
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2answers
96 views

Effect of secondary coil in a resonant transformer on resonant frequency

I have a friend who has asked me to help them with tuning their tesla coil. Every schematic I can find for building one simplifies down to essentially the circuit below. I recognize the primary ...
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241 views

Will a Tesla coil work with a square wave inverter output, used as input?

I wanted to try an unusual thing, I couldn't find enough resources explaining this approach. Few days back, I built a fairly simple CFL inverter using a TL494 IC and a couple of power transistors. It'...
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53 views

Slayer Exciter circuit not producing electricity

I used the circuit below to try to make a slayer exciter, but it doesn't seem to be able to power anything around it. Is there anything that I'm missing? Also, yes, I know that in the picture there is ...
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59 views

How to increase Vdss of power MOSFET?

I want to build a Tesla coil with mains voltage. I found a schematic online but it uses an irfp460n MOSFET which can handle 500v (Vdss) but I only have couple of irfp260n and irf250n MOSFETs with 200v ...
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172 views

Gate drive transformer for lower frequency (25 kHz)

I am doing this half bridge to generate High voltage from 300VDC.(Around >10000Volts for a corona discharge tube to produce ozone) I have gone through many application notes for making one GDT for ...
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240 views

Resonant Q Factor vs Voltage Gain

I was pondering the analytic effect of Q on the voltage gain for quarter wavelength helical resonators (Tesla Coil Secondary). One of the reasons a great looking secondary can perform poorly is due to ...
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142 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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145 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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106 views

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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67 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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430 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
114 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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97 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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54 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
347 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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72 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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144 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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62 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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58 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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28 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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1k views

Slayer exciter (mini Tesla coil) not working with IRFZ44N

I made a Tesla coil using the circuit from this video. The MOSFET seems to be getting hot and current passes through the primary but I get no response from the secondary. Here are the dimensions of ...
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824 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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63 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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168 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
106 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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76 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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1k 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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397 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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6answers
4k 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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756 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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938 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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356 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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255 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 ...