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

Filter by
Sorted by
Tagged with
1
vote
1answer
89 views

Slayer exciter doesn't work

I know that similar questions have been asked here, but none of the answers seem to work for me. Also, I am new to this site, and I am not much of an expert when it comes to electronics, so feel free ...
0
votes
3answers
51 views

How exactly does a Tesla coil primary winding transfer energy to the secondary winding?

We know that the Tesla coil has a low coupling coefficient so most of the energy is transferred by using electric resonance. How exactly does it transfer the energy? When the oscillating magnetic ...
-1
votes
1answer
45 views

Tesla coil with flyback transformer and ZVS circuit

I am new to the field of electronics and I might have some wrong concepts. I was thinking of designing an old fashioned 'spark gap' Tesla coil. Materials I have: a flyback transformer a cheap ZVS ...
3
votes
4answers
110 views

Why is the primary of the Tesla coil placed at the bottom of the secondary?

The primary winding of the Tesla coil is wound around only the bottom portion of the secondary coil and in Wikipedia, they mention that this configuration illustrates the operation of the secondary as ...
0
votes
0answers
56 views

How to design a class-E amplifier with a more complicated load (tesla coil)

I'm currently trying to build a 4MHz Tesla Coil powered by a Class-E amplifier. I've managed to design and simulate such amplifiers with a load consisting of a resistor and a coil or a capacitor using ...
4
votes
1answer
713 views

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?
0
votes
0answers
45 views

Secondary Coil Malfunction in an SSTC Circuit

I’ve designed an SSTC circuit which is based on a different topology and I wanted to accomplish it in real life. The circuit is operating at approximately 1.5 MHz during resonance and inherently, the ...
0
votes
1answer
66 views

Understanding high frequency tesla coil circuit

Below is a circuit diagram for a high frequency tesla coil circuit that I found on this site. L2 is the primary winding and L3 is the secondary. My understanding of resonant transformers is that they ...
1
vote
1answer
53 views

Tesla coil design: primary coil

Background info: I'm trying to create a spark gap tesla coil that uses a ZVS / flyback combo, and so far, given the initial tests with a 12 volt 20 amp power supply, I managed to get it to work, but ...
60
votes
3answers
9k views

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

This video shows a 9-volt battery is 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 ...
2
votes
3answers
242 views

What makes Tesla coils better than conventional transformers at generating high voltages?

The voltage gain of a Tesla coil can be determined from the primary and secondary inductances \$L_1\$ and \$L_2\$ using the following formula (Wikipedia has a simple derivation): $$ \frac{V_2}{V_1} = \...
1
vote
1answer
54 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 ...
2
votes
1answer
114 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....
1
vote
0answers
79 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 ...
0
votes
1answer
43 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 ...
0
votes
1answer
92 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 ...
0
votes
1answer
83 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 ...
0
votes
0answers
33 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 ...
1
vote
1answer
83 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 ...
0
votes
0answers
147 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 ...
7
votes
7answers
2k 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, ...
1
vote
1answer
60 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?
1
vote
1answer
197 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 ...
2
votes
3answers
130 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 ...
0
votes
0answers
58 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 ...
0
votes
2answers
192 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 ...
1
vote
1answer
350 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'...
0
votes
0answers
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 ...
0
votes
0answers
87 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 ...
0
votes
1answer
317 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 ...
0
votes
1answer
425 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 ...
0
votes
1answer
225 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 ...
0
votes
1answer
300 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 ...
3
votes
1answer
120 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-...
1
vote
1answer
86 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 ...
1
vote
0answers
735 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 ...
1
vote
4answers
221 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 ...
1
vote
2answers
129 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 ...
0
votes
0answers
58 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 ...
2
votes
3answers
507 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 ...
0
votes
0answers
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 ...
1
vote
0answers
178 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 ...
0
votes
0answers
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 ...
0
votes
0answers
63 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 ...
0
votes
0answers
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 ...
0
votes
2answers
2k 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 ...
4
votes
3answers
904 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. ...
1
vote
1answer
67 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)...
0
votes
0answers
208 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 ...
0
votes
1answer
108 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 ...