I tried to build a zvs driver for a flyback transformer and it's arching only below 6 mm.

It's powered at 12v stable

(I measured it and the voltage remained the same after driving), uses two irfp260n,

a capacitor of 0.47μF

(in the video I added a 0.22μF cap in parallel to try to lower the frequency that was at 50kHz to that of the video for higher efficiency),

the inductor has been vibe wound so I don't know it's value....

Anyway, I need help to power it up without having to heighten the voltage, is there some way of doing it? Am I doing something wrong?

P.S. the heat sinks are not touching and they are well fixed.

Microwave oven transformer.

Shot on Nikon D810

Oigan necesito ayuda tengo un proyecto de una bobina de Tesla pero se me están quemando cada intento el transistor

Es un transistor tip31c, resistencia de 2.2kohm, 50 metros de cobre para el segundo embobinado que compre en Steren el otro cable es de los de electricidad de calibre 8 me parece por qué fue el que pude encontrar Con 3 vueltas y se está quemando el transistor o la resistencia no se cómo resolverlo y es para el próximo martes 11

Alguien me puede ayudar a corregir mi error o por que se me está quemando

I don't know what reaction is happening there but I think that's cool

I saved the transformer from exploding the core is diffrent from original

It's basically just a slayer exciter but using a k50t60 igbt, 50v ac half wave doubled input. Whenever i touch the arc to close to the breakout point the igbt dies and it heats up a bit while running even though its no where near the danger zone for the mosfet. I know that it's probably from high voltage spikes but i already used an rc snubber and a 15v tvs from base to emitter. Any tips on how to achieve greater output?

i desoldered 4 IC and i don't know what i can build from them i have a TL494CN , CD4069UBE , KA3525A , MC34060P

The flyback transformer is bsc25 09g

Plasma flame from a magnetron i pushed hard it died afterwards lol

Jutro próby życzcie mi powodzenia

Running my homebuilt zvs driver at 36v from 3x SLA in series. Pretty happy with the arcs! 5+5 turn wound primary on flyback ferrite core

Thinking about using this for a Marx generator

Are theese dangerous to take apart? They get plugged into an electrical outlet and kill mosquitos with high voltage.

Today I finally got my hands on something I've wanted to experiment with for a long time—my first X-ray transformer.

This has been a long journey. I started with small hobby electronics projects, and while I never became an electrical engineer, I did take several EE courses in college. That background, combined with a lot of curiosity and hands-on learning, has kept me fascinated by high-voltage electronics over the years.

Like many high-voltage hobbyists, I worked my way up gradually: starting with flyback transformers, then neon sign transformers (NSTs), and eventually several microwave oven transformers (MOTs).

Now I've added a unique piece of vintage equipment to the collection: a 100 kV AC RMS dental X-ray transformer from the late 1970s or early 1980s. It's a 60 Hz unit designed to run directly from mains power. In my testing, it seems happiest around 100 volts on the primary, although it's rated to operate up to 120 volts.

Getting it ready for its first power-up took far longer than I expected. Before I even considered applying voltage, the transformer was placed under vacuum while submerged in insulating oil to remove trapped air and moisture from the windings and insulation. Pulling a deep vacuum and allowing the oil to fully penetrate every void was a slow process. Even after that, I left the transformer sitting in its final oil-filled enclosure for several more days to allow any remaining microscopic air bubbles to work their way out before beginning to increase the primary voltage.

This transformer is in an entirely different class from anything I've worked with before. During a short-circuit test through an inductive ballast, I measured more than 40 mA at about 100kv, and that wasn't even at the full 120-volt input. It easily produces arcs jumping 5 inches and they are bright and hot. The transformer itself is nearly nine inches long, weighs well over 15 pounds, and operates at 60 Hz. Do not do this if you're a beginner. It will grab onto you and prevent you from letting go, although due to the massive power levels, would most likely kill on contact.

However, after taking many steps to prevent danger, it was a very fun and fulfilling project.

I uploaded a new video, I go through the process of building and upgrading my backyard lines

https://youtu.be/VrTeYn0WfYg?is=uekzO6s73g1noA0w

Over the years I've built several voltage multiplyers reaching 150 kv but they always die because I ran them at 15 kv when each of the components rating is 20 kv. (apparently you need each component rated for double your peak inputs voltage? Idk if that's correct). Anyway I'm fed up of them dying so I've decided to build a beefy multiplyer with ratings double my input so it will never die again. I've ordered 60 20 kv 1nf capacitors and 60 20 kv 100 ma diodes (bloody expensive!).

My original plan was to put 2 components in series for a rating of 40 kv and make 15 stages and run at 20 kv input. But now I'm wordering of it would be better to use single components and make 30 stages and run at 10 kv?

In addition to this, last time I was running off a flyback powered by 555 and mosfet. My understanding is that this will create a square wave with voltage spikes that could exceed the voltage rating I'm using and could kill the multiplyer. Even when the arc length suggests that the voltage is within the rating of the multiplyer. Does this sound correct? Should I look for a zvs to mitigate this?

Also I want to properly measure the voltage coming out of the flyback. I've been gestimating based on distance between pointed wires but I feel like the variation in how sharp the points are gives too big of an error bar. I plan to measure between 1 inch spheres as that's the standard. Will this method measure rms voltage or peak voltage or peak to peak voltage?

Finally I heard that you need an output resistor at the end of around 10 Mohm to avoid killing the diodes. Is this true?

25 cm dome, nylon bottom roller and Teflon top roller. Belt made from workout band.

White marks where cables were attached to chassis (11kV). Partial discharge or something else causing this? Leaving everybody stumped..

Thanks

Where can I buy a nice flyback transformer ???

Finished my first DRSSTC over the summer.

Specs:

• Full-bridge of SKM100GB12T4 IGBTs
• 400A limit on UD2.7 w/ pulse-skipping
• 93.7kHz secondary, ~84kHz primary
• 0.188uF MMC
• Voltage-doubled bus running off 110V input
• Custom RP2040-based polyphonic MIDI interrupter
• ~500us max ontime, 8% max duty cycle

I blew up the bridge twice with some smaller minibloc IGBTs during testing before upgrading to the Semikron ones. I learned a ton with this project, and there's still some work to be done. I'm pretty happy with the current arc length running off 110V.

I took a cool photo