r/highvoltage

Image 1 — Are these diagrams trustworthy?
Image 2 — Are these diagrams trustworthy?
Image 3 — Are these diagrams trustworthy?
Image 4 — Are these diagrams trustworthy?

Are these diagrams trustworthy?

I bought this flyback transformer with the intent of building a power source for a tesla coil based of this video DIY Plasma Physics Powersource (Mini 20,000v Flyback) but i bought a diferent flyback transformer, so i need to figure out what each pin is for to build it.

The diagrams are from the transformer i bought but im unsure if i can trust these. Any advice would help me a lot

u/LongjumpingAd4908 — 18 hours ago

Is this usable?

Ripped this flyback out of an old crt that i found in a scrap yard. Seems intact but I’m worried that water might have made its way inside. What do you think?

u/Relevant-Sherbet-616 — 23 hours ago

Capacitor discharge accident

Hey guys wanted to ask if you made similar experience. Year's ago when I was pretty new to building capacitor banks and getting into pulsed power and exploding wires etc I accidentally touched a 0.22uf 2kV cap and I was quite shocked by what happened. It didn't hurt at all. All my muscles just locked up and my view went totally black. A second later I was back and at first I didn't realized what happened. I knew I got shocked while rewiring stuff but I didn't know why and by what. I checked the main cap bank, all empty, zero volts ( I knew because I had it shorted for safety before rewiring stuff) I checked the transformer and the variac and the plug to mains voltage. Everything was dead, unplugged and safe. It took me another second to realize ohh shit that 0.22uf 2kV cap had voltage left. It happened because I was stupid, it was such a small capacitor and such low capacity and joules. I didn't took it seriously enough. Was like ohh that little thing ain't lethal. Yeah I was stupid. Since then I never had another accident and I'm glad it wasn't the 360uf 5.6kV cap bank. I guess if it was I couldn't make this post. Anyone else ever made a similar experience? No pain but pretty much just shut me down.

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u/Academic-Ad5274 — 1 day ago

Does this HFSSTC circuit look okay?

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I’m pretty new to HFSSTC and don’t have much experience with these circuits yet, so I’m not sure if there’s anything wrong with my build.

I’d also like to know how to prevent the MOSFETs from blowing up, and I’d really appreciate any tips or advice on improving the circuit.

Thanks everyone!

English isn’t my first language, so there might be some mistakes. Feel free to correct me.

Oh, and I forgot to clean my camera lens, so sorry for the blurry video lol.

u/Adventurous_Cow_4529 — 3 days ago
▲ 24 r/highvoltage+2 crossposts

MASSIVE Arc Flash EXPLOSION: Clamp Destruction REVEALED!

Witness an intense arc flash demonstration at an electrical substation. See how fault current destroys equipment and learn the surprising technique for clamp effectiveness. Lowering impedance can increase voltage drop for better protection. #ArcFlash #SubstationSafety #ElectricalSafety #IPSafety #PowerGrid #SafetyDemo

u/Quiet-Ad-6546 — 3 days ago

Looking for low viscosity potting compound

Im looking for some potting compound that ideally is 2 component silicone based with at least about 20kV/mm that seals well against ceramics,

i dont need a lot, even 50mL would probably last me a good while,

i was recommended raytech magic gel before

Thanks in advance

reddit.com
u/Fantastic-Budget-212 — 4 days ago

High-power ETD54 transformers (1:25 step-up, 30mm copper foil primary) — FREE for hobbyists/makers! (Just cover shipping)

Hey everyone,
I have a tray of unused MagTop MTETD54-4TS high-frequency transformers sitting around and would love to get them into the hands of hobbyists, builders, or researchers who can actually put them to work!

Quick Specs
Core: ETD54 (PC40 ferrite) — capable of high power throughput.
Turns Ratio: 4 : 100 (1:25 step-up).
Primary Winding (N_2): 4 turns made of 0.35 * 30mm copper foil(rated for very high continuous DC input current).
Secondary Winding (N_1): 100 turns, 2.5kV AC isolation primary-to-secondary rating.
Inductance (N_2): 7.0nH@ 10kHz.
Weight: ~300g / 0.65lbs each.
Full Datasheet: View on Google Drive

What These Are Great For:
High-power 12V/24V to high-voltage DC inverters (300V+ bus generation)
High-current ZVS driver setups / Plasma arc generators
Capacitor chargers for coilguns, railguns, or pulse discharge experiments

Details & Logistics
Location: Shipping from California, USA.
Cost: FREE! You just cover the actual shipping cost.
Weight/Shipping Calc: Each unit weighs roughly 300g - 0.65lbs, so single or small-qty shipments should easily fit into USPS Ground Advantage or small Flat Rate boxes.

If you're interested, leave a comment below with what project you plan to build with it and how many you're looking for, then shoot me a DM with your zip code so I can estimate shipping. First-come, first-served!

u/reactor89 — 5 days ago

My new ZVS driver

I've built this ZVS driver and it stays calm like a rock when it runs on 300w.

u/kiklop777 — 7 days ago

Dual resonant MOT‘S

Hey guys ive got an question I recently got my Hands on two Microwaveoven Transformers, and Four 1uF HV capacitors. Now I have the to Primarys Wired in parallel to eachother. The cap setup is 2s2p and i saw an video on TikTok and he got much bigger arcs and i dont know why. My setup is suply 230V->EMI Filter -> Ac button 250VAC 10A-> thermal fuse 105Degres C-> 2 MOTS. The arc is between the two HV Outputs an oke hv output goes into the capacitor bank the two cores are conected and everything is grounded PLS Help

u/FirstAd1634 — 7 days ago
▲ 12 r/highvoltage+1 crossposts

Would a double half bridge sstc work reliably?

I'm building an sstc based on the cd4046 inspired by uhvlab's and teslaista555's design. In both of their designs, they are using a double full bridge configuration with 8x irfp460's. I'm wondering if I can replicate something similar with a double half bridge with 4x irfp460's. I am aware I could build a regular fullbridge, but I'm not sure if I could push the same amount of current through the mosfets as the irfp460 has a high rds on. I am also planning to design a pcb for it. This is my design so far:

ps: My goal is to make a nice performing sstc that works as reliably and efficiently as possible so I am trying to achieve ZCS with the cd4046

u/Former_Climate_3512 — 8 days ago
▲ 26 r/highvoltage+3 crossposts

110kv pole

This high-voltage transmission tower, often referred to as a "cathead" or lattice pylon due to its distinct hourglass shape, operates at an estimated voltage of 110 kV to 220 kV. The steel lattice structure features extended horizontal arms at the top supporting suspension insulators, which safely keep the high-voltage conductors insulated from the grounded frame. Towers like this are standard for regional electrical transmission, moving power over long distances from primary substations to distribution networks.

📍Greece,Xaviá

u/s1lef — 9 days ago

How can I get really high voltage, low current from a lab source

I'm pretty new in electricity and as a fan of physics I really want to experiment with high voltage, ionization and plasma. I have a lab source that gives max 3A 120V, what is good but not for coronary discharges and stuff.

I also did a DIY Tesla, but it was extremely weak and transistors die very quickly.

Can you help me choose a scheme which is easy to build for a beginner, something like powerful tesla coil or arc generator.

Also I dont really understand how to pick components for the circuit, like I understand what a capacitor or transistor do, but idk which ones I need.

reddit.com
u/Dynamite_crusader — 9 days ago

Tubes!

Some better pictures of my tubes from my other post. Tried to get more numbers and pictures of the individual tubes.

u/PaUrbex — 11 days ago

Taka sobie SGTC# 4

After activating the asynchronous disc spark gap and enlarging the toroid, this is what the discharges look like. The video is in slow motion.

u/AdConnect224 — 12 days ago