i've been wanting to use an arduino to drive a flyback but don't know how to do it (or if it is possible) if so, can you explain, and if not, is there a possible solution like using transistors

I have the opportunity to obtain a utility pole transformer. How would one is the transformer to build a Tesla coil? I have built some Tesla coils using microwave transformers. But this is something totally different and I really have no idea how a Tesla coil would deal with the transformer. I believe it is 120 kva and it isn’t directional so I should be able to provide 120v from a wall in and get 120 kva or 120 kw out. The 1 kw microwave transformer feed tesla coil was scary. So I am nervous about 120 times more powerful utility poll transformer would be terrifying. So advice about if I should go through with it. I have no training or education on high voltage and I think I might be out of my depth. But you all let me know. I might be wrong or something let me know I look forward to talking to you all.

Is anyone aware of kits or ready made amplifiers, half or full bridge circuits where I could input a signal from a function generator? I am wanting to use such a circuit for a Tesla Coil and am wanting to experiment with different waveforms from a function generator, such as sinusoidal, sawtooth, etc.

If not, are there circuits available where the pulse width can be adjusted, ideally for each individual FET/IGBT?

https://preview.redd.it/digawfltu53e1.png?width=1886&format=png&auto=webp&s=78620bd9448ff4c3783c9b2c0fc59a6e9432c9f7

I feel like a lot of the times it's just ZVS this, ZVS that.

I recently made a high voltage generator that can either output around 20kv at 5mA if I use the resonant capacitor, or around 70kv at 0.4mA if I don’t use the resonant capacitor. The higher current mode, with the capacitor (image 1) creates a hot arc, whereas the lower current mode, without the capacitor, (image 2) can create much higher output voltages. I give the circuit 24V, constant current limited to 7.5A.

It uses a center tapped coil (5+5) turns on the core of the flyback and 2 MOSFETS (IRFP250N’s). The power side of the circuit (image 3) is very similar to the ZVS driver, although the rest is completely different. This uses a 555 timer to produce a square wave signal, which goes into 2 mosfet drivers, one inverting and the other non-inverting. That way, the second mosfet is completely inverted with the first. Using a resonant capacitor will make it extremely efficient, and give out relatively high currents but not as much as an actual zvs driver.

This also makes it operate at ZVS, which makes its waveform practically pretty similar to the ZVS driver, although the huge difference is that this one is not self tuning/resonating, so it doesn’t rely on the resonant capacitor. Removing the resonant capacitor replaces the nice sine wave with inductive spikes. These inductive spikes, even though they only last for less than 1 microsecond, are around 1500V volts, so they can induce a super high voltage (but low current) on the output of the CRT flyback. Also because the spikes are so short, it doesn't damage the MOSFETs or the transformer too much, but I did still get some arc-over between the pins of the flyback when I pushed it hard.

Approx. schematic, without the signal generation part because that's quite complicated

I made a typical zvs mosfet driver and hooked it up to various flyback transformers. As soon as I draw the initial arc, my power supply shuts down. I have tried both a 19.5v 4.5a and a 24v 4a supply. I've tried various mosfets including IRFP450, IRFP250, and Motorola 16N40E all with the same results. Is it really drawing over my power supplies capacity?

Got this GU-81M, will try to build a vttc with it in december, hope i find enough microwave parts.... what a beautyfull tube

250kHz Tesla coil driven directly without a primary coil. Pulling about 6 inch sparks thanks to the high Q factor of the PVC tube. Shot on Canon R7.

why do some medium sized tesla coils make small sparks, but tesla coil guns make big sparks

https://preview.redd.it/r10lz0enhq0e1.png?width=679&format=png&auto=webp&s=50a6c94fafc3d4df89b481b12cc3394b274bd382

You can use any 12V zener diode, I tried 1uF,2uF,500nF capacitors. Actually 500nF capacitor is more effective than others

I don't believe i shared this here last year so here i am doing so now, it's been a few years now i should knock the dust off it and fire it up for a new video i may do that soon :)

https://youtube.com/shorts/OdLky2Pnezw?si=weYQFmdU_bT9rdHx

Just fired my first ever tesla coil for the first time, and am getting very poor output. My guess is its really out of tune, and I need more turns, but I'm already using 10. I get pretty much no corona except a small dot if I'm lucky. Any suggestions on what to do next? I have a 0.045uF tank capacitor (30 942C10P15K-F caps, 10 in series wired in parallel) and two identical small MOTS in series. Secondary is around 4.5" PVC and around 950-1000ish turns. My spark gap is two knobs where ill usually use a leaf blower to extinguish, but I didn't in this video.

https://www.youtube.com/shorts/J-FOHlJcP8U

I recently got big flyback transformer from e-waste store I use zvs to drive it and realized that it only output DC but I want it to output ac but I already put it in oil and vaccum it so there way to fly or short internals diode without open it ?

So i got one of those marx gen kits and a zvs off of ebay and i made it handheld. But im having an issue isolating the hv ground from the hot (doodled where it zaps). I know i can make the gap smaller but thats no fun. Also if anyones interested i can publish the project so qnyone can make their own. Also also, how dangerous is it to get zaped by this thing. I know it aint gonna be fun but is the thing lethal? Hopefully not. Thanks in advance

I have built a SSTC but the output votltage frequency is too high for my intended application and one way is to change the dimensions of the secondary coil but I can't keep doing that for various frequencies Can I merge my circuit with a 555 timer singnal generator circuit(PMW, Sine wave etc) and expect to change the frequency by altering the resistors/capacitors for the 555 circuit? I have attached a pic of the circuit

It's been years since my old NST burned up and I want to get back into the hobby. I'm looking to build a 50-70kV(not variable, just in that ballpark), ~1mA HV power supply. I'm looking to modify a standard, el cheapo ZVS driver with PWM control, or just build a 555 circuit with a MOSFET. Not sure yet. But, in any case, I need components.

I'm looking to find a source for a flyback or other compact HV transformer but without the internal cap/diode/snubber. Is there a source for such a thing or do I need to wind my own? I'm hoping to build a full-wave multiplier to improve ripple on the output so I need a proper AC signal of, say, 5kV. MOTs are cool but a little larger than what I want(physically and power-wise) so I was hoping to go with a flyback form factor.

What about HV caps & diodes for the multiplier? Are you guys ordering off AliExpress or going to a standard electronics supplier? Same question for HV cables. Can I get, say, 50-70kV cable by the foot somewhere?

I'm hoping to add a milliammeter as well. Do you have a recommendation for a HV friendly one? If I panel mount it, the last thing I want is arcing to the panel/ground.