Make a rotary sg this will boost the performance massively or at lest a make a sg with lots of conductor and a fan blowing air

Just found your channel. Im getting into all this, thanks for posting the links, and showing the schematic!!

the spark goes does more than just set the freq. it creates the impulse current which in turn creates the longitudinal em "wave"

Great Vid, Thank you, keep up the great work! Video idea: You could make a video about safety (How to work with high voltage safely) and/or how to get startet and continue in the world of high voltage. Thanks and have a nice Day.

@CoilLabs

3 жыл бұрын

Thank you! Yeah, that's a topic I've actually had on my list of "video concepts" for a while. Just need to sit down and actually write it out sometime. Great suggestion. That's a very important topic!

I built some smaller coils back in the day using 4KV bug zapper transformers, an open spark gap, and some 3kv doorknob capacitors in series. The most crucial part of the build was the adjustment of the spark gap for maximum output. The trouble I ran into was the fact I was using galvanized screws for the spark gap which heated up way too quickly. I am considering a rotary gap with brass leads for my next build using a 6KV furnace ignition transformer.

Good job.

Building my first tesla coil right now, although it's dual 811a vttc. Cool video!

@CoilLabs

3 жыл бұрын

Honestly, vacuum tube coils are my favorite. They're quiet, unlike spark gap coils, but they're not as fragile and sensitive to hard switching as solid state coils. Plus the sword-like sparks, look really cool. Good luck with your build!

@HoorGuvLabs

2 жыл бұрын

we meet again!

I just created a simple 'water cooled spark gap', you could dump so much more voltage at a higher frequency into that coil, I'd really love for you to take a look and possibly build one yourself!

Sir how i match my primery and secondary winding same freqiency

hello do you have to have an nst no gfi to build a tesla coil? or can you have it with the gfi? thanks for anyone's help

⚡

A question from a tesla coil beginner without measuring and test equipments : I have a tesla coil with a flat primary (14 awg) winding of about 5-6 turns around a 3/4 inch diameter, 9 inches tall secondary coil with 32-34 awg winding which I got from ebay. The primary coil is powered by two flybacks in series with rotary spark gap with a 50kv cap. When it is turned on, the secondary coil discharges 2-3 inch plasma arcs from all directions top to bottom, but the top load with a metal paint ball (from ebay) with steel wire break out only showed very small visible active plasma discharges. Previously, I ran it for couple of minutes and I began to smell smoke and found that the inside of the primary cylinder was burnt - appears that there were arcs inside (secondary from ebay 2mm dia). What is the cause of this occurrence and what can I do to prevent arcing from the secondary and transfer all the arcing to the top load? Best.

@CoilLabs

2 жыл бұрын

It's hard to say anything for certain, but if you're getting flashover between the bottom of the secondary and primary, it sounds like the primary is way too close to the secondary. For a spark gap coil, even a small one like this, you want fairly low coupling, because the voltages are high, meaning the peak current when the capacitor discharges through the primary is high. Single resonant solid state and vacuum tube coils use much tighter coupling because their peak current isn't as high, so you need more of the magnetic flux to be coupled with the secondary to get enough energy transfer, per cycle. With spark gap coils, you can get away with looser coupling, because the current is higher, meaning the magnetic field is stronger. And in fact, you probably need to, because the voltage across your primary is very high and you need to keep it physically spaced away from the secondary. It also sounds like your coil isn't tuned well and resonant frequency of the primary doesn't match that of the secondary, when you have the top load on. That will lower the resonant frequency of the secondary and you probably need to lower the resonant frequency of the primary to match.

😎

Can I use flyback transformer?

Would using the formula to calculate the resonance of the secondary to the primary, wouldn't that be the most difficult for most people? I'm a ham radio operator so I do understand resident frequencies thank goodness, so maybe I've got a little bit of a head start then not being a total noob 😅😅 That was a good video I appreciate that! I wish I could share my Tesla build, it's just a little mini kit, but copyright and everything prevents me from uploading it because it does have a little music playing through it 73s AF5CG

@CoilLabs

3 жыл бұрын

Thanks! Honestly, most of the formulas are actually pretty straightforward. People way smarter than me have solved empirical approximations for the "capacitance" of toroids and inductance pancake coils and cone shaped coils and everything, all just based on geometry alone, so if you have those equations it's just plug and chug and iterate to figure out your design. Or use a program like JavaTC, which just implements all of those formulas for you and can help you solve for the "optimal parameters". These days, I tend to use JavaTC as an initial solution and then double check with my own calculations, to be sure. But anyway, thanks to a lot of great work and willingness to share knowledge by the Tesla coil enthusiast community, it's actually pretty easy for anyone to get started and design coils that, theoretically, should work. The difference between a novice and a veteran coil builder becomes a lot more apparent when actually building it though. Understanding how to control parasitics and things like that. I don't know that much about ham radio, but I bet there are a lot of parallels to this, where veterans know how to make the fine details work better than a novice would. Anyway, thanks for the thoughts spurring this discussion! Sorry I wrote you a whole paragraph, lol. Have fun with your little coil! I'll hopefully be getting into audio modulating some SSTCs here soon.

@SpectrumDIY

3 жыл бұрын

@@CoilLabs Oh no don't apologize at all! I really appreciate the time you took to respond! You are very correct about the parallels, and it's also true for audio(especially imbalanced audio signals), with ham radio a lot of issues comes in to play with the antenna is not in resonance, and usually can be fixed by adding equal lengths to either end of one of the elements in question, or taking said length away in an attempt to bring the SWR down close as possible to 1:1 Also, a lot of times you run in to stray capacitance in the coaxial cables if they're longer than just absolutely needed. Honestly I've found the best way to solve noise though in cables is to use a "telescoping shielded cable" which is just a fancy way of saying you cut the shield/ground at one end so that the current doesn't travel between amplifier and radio, but usually from amplifier to antenna it's left fully connected at both ends. I've never actually experimented with antenna side telescoping-shield, so I don't know if it would have a negative impact or not. I'm by no means an expert at all, but just my experiences. The biggest pain is damn ground loops lol. For that I use either a star-point ground system (for audio) or a ground bus (for radio). Cheers for the reply!

@SpectrumDIY

3 жыл бұрын

I think I fixed the copyright issues, so here's the link if you want to skim it a bit for what one I built (not from scratch, but a kit) kzread.info/dash/bejne/d2yFuMxsc6aXhaw.html

@CoilLabs

3 жыл бұрын

Interesting stuff. I really don't know that much about the practical aspects of radio, so that's all interesting to hear about. Something I'd definitely like to learn more about some day. Thanks for sharing the video of your little Tesla coil. That looks like fun!

@SpectrumDIY

3 жыл бұрын

@@CoilLabs it's no problem at all, I really appreciate you checking it out! I will do some ham radio videos once I move, I am kind of in a rough situation. But because I'll be moving into an apartment, it'll be the perfect place to demonstrate how you can build an indoor antenna for a small space ⚡⚡

Is the center of your nst connected to mains or rf ground?

@CoilLabs

Жыл бұрын

I have it connected to the RF ground. There are some conflicting opinions about this out there, but it seemed the safer thing to do to me.

@ethansprojects7399

Жыл бұрын

@@CoilLabs thank you. mine was originally connected to mains ground since its the only receptacle on the circuit. but now that im adding a safety gap and later a terry filter i changed it and was just curious on how other people did it.

Would tesla cool mess up with your gadgets? I see you have a computer between those towers

@CoilLabs

Жыл бұрын

Definitely not a good idea to run electronics near Tesla coils. There's a Raspberry Pi that runs that monitor. It's not as close as it looks in the video, but it probably would have been safer to turn it off. I'm taking a risk with my camera every time I film Tesla coils though.

Sgtc ou sstc

@CoilLabs

3 жыл бұрын

This is a SGTC

Don't need to use bad language,it diminishes tour presentation.