Building A REAL Solid State Tesla Coil (For DESKTOP LIGHTNING) | The Complete Guide + PCB Download!

[@LabCoatz_Science]

Sorry for the muted segment, some penny-pincher decided to copyright the music after over three years of waiting. Be sure to check out the latest additions to my Tesla coil collection, including a staccato QCW mini-coil, an even smaller class-E SSTC that can play music, and my most powerful coil yet: a DRSSTC capable of producing 4-foot arcs!

[@dylanm.3692]

Hey, I'm in a bit of an urgent predicament. I'm building an SSTC similar to this, but the problem is that I bought the UCC37322 instead of the UCC27425. I figure that if they're similar enough to be sold in the same Amazon listing, it can work with some minor adaptation. Is there a way I can do that? I really wanted to get this running before the 18th but I don't feel like paying $49 for expedited shipping...

[@LabCoatz_Science]

@@dylanm.3692 Unfortunately, I don't know if you can pull off something like this with just the UCC37322. However, if you wanted to try, I would connect it as follows: 1. Connect pin 3 of the UCC37322 (the enable) to the same position that pins 1 and 8 of the UCC27425 would connect to 2. Connect pins 1 and 8 of the UCC37322 (the VCC pins) to the same position that pin 6 of the UCC27425 would connect to 3. Connect pin 2 of the UCC37322 (the INPUT pin) to the same position that pins 2 and 4 of the UCC27425 would connect to 4. Connect pins 4 and 5 of the UCC37322 (the GND pins) to the same position that pin 3 of the UCC27425 would connect to. At the same time, connect the spaces that would be used for pins 3 and 5 of the UCC27425. This is important, because the UCC37322 doesn't have an inverting output, so it's "other end" is ground. 5. Connect pins 6 and 7 of the UCC37322 (the OUTPUT pins) to the same position that pin 7 of the UCC27425 would connect to I must declare, however, that there is no guarantee this will work, especially if you bought your ICs from Amazon (which is notorious for fake ICs that either lack the enable pin or are simply defective). Good luck though!

[@dylanm.3692]

@@LabCoatz_Science Wow, thanks a lot! I'll give that a shot. I was able to successfully use this IC in a flyback driver so I'm confident they're genuine.

[@Atomicgreat]

I also want to build a SSTC. How can I contact you?

[@CoilLabs]

Great stuff! Thanks for inviting me to be a part of this, I really enjoyed it!

[@LabCoatz_Science]

Glad to have you as part of the team, the video wouldn't have been the same without you!

[@MrMartinswan]

Hay dudes love your videos and hope I get the PCB board ! I'm trying to make a big Tesla ! But in England the country is nackerd ! Lol I can find any help all of the transformer manufacturers can't tell me anything and people that sell capacitors don't know what I want ither lol ! I'm asking them questions and that just look any me as if I crazy lol !

[@tristanlee1171]

Can't express how awesome this video is! Love that you've provided so much information about the project in the video, along with your design and COMPLETE instructions on how exactly to build the circuit and coil. It really makes the difference to be able to follow a guide like this. You've made this build super accessible and I praise you for that.

[@pranavramesh4888]

Been waiting for this video for more than half a year. Great video as always!

[@davidcrane275]

Awesome job. I'm going to build one of these bad boy toys. Want it ready for NEXT Halloween. Want to fry all those electronic watches people wear.....I just think it would be great addition to the neighborhood. Time machine is probably out of the question for now, but a lightning bolt/musical tesla coil might bring the folks in for a look. I want the latest pcb . Lo!oked over the instructables. Looks well written and easy to understand. Nice job

[@williamfox8795]

Thanks 🙏 so much to you & all the others, who helped make this detailed SSTC ⚡️ & the build 🪛 video possible! It’s so nice to see the efforts of so many advanced coilers assembled together for the greater coiling community 🤝… Hope those who are awarded your PCB’s will have successful builds of their own & really appreciate your generosity! Thanks 🙏 again!

[@greggarriss2107]

Beautiful work!! I built my first TC with glass plates and neon sign transformers as a kid back in the 60s…and survived another dozen. I canʻt wait to build this one!!

[@xgulaschannax3927]

I just built this tesla coil driver along with a new coil. My coil is a little Overkill (diameter is 9cm and length around 40cm, i used 0.22mm magnet wire and have around 1400-1600turns) and i must say im amazed. I really recommend using Zach's pcb because it makes building it really straight forward. My spark size is around 25-32cm depending on the interrupter frequency and I am very satisfied with the results. I heavent even tuned the coil and im using 6 primary coil windings to be on the safe side. Also, my topload is pretty small in proportion to the coil size. Thank you so much Zach I really appreciate the work you put in your Videos, your channel is one of a kind on yt. Nobody does so well made totorials on tesla coils other than you.

[@andefinus]

I'm building the sstc myself and wanted to know the specifications of the primary coil you used. When I enter similar values to the ones you mentioned, I always get a very high detuned value (so the secondary and primary coil's frequencies are very different). Does this value just doesn't matter at all or did you do something to decrease the detuned value?

[@cisarvialpando7412]

No youtuber gives the gerber file.....you are the 1st...🔥💯💯💯

[@chrismouyos1288]

Nice job, its really go to see young guys take an interest in cool analog electronics. Way to go!

[@LabCoatz_Science]

Thanks! I'll be releasing the Internet's first build tutorial on QCW DRSSTC's next (PCB files and instructions included), so stay tuned!

[@peterasztalos6370]

Nice job! You put a lot of effort in your videos,and you do a great job. I always wanted to build an SSTC that can make huge and beautiful arcs,and not just puny little ones,and the musical mode is just awesome. Thanks for the well detailed and presented video! Well done!

[@CuriousChan]

It's amazing to see Tesla coil enthusiasts in one video! I hope you also get in touch with Electroboom, Plasma Channel, Franzoli Electronics, Teslaundhmer, Hyperspace Pirate, and other high voltage enthusiasts😅 How about a singing flyback transformer? I'd like to see your take on it...

[@koreancrafter]

I love how cool the arc looks! and I whould like to receive musical one so I can show it to my friends how amazing the tesla coil is

[@jvon3885]

I'll be honest I'd like both boards so it really wouldn't matter. I've replicated Plasma Channels desktop Tesla coil for my step sons science fair project. But sadly they didn't even place him because it was "too advanced" he even built over half the project himself and studied every book I had on Tesla so either way it was a win. But yeah nice build I actually found your channel through Plasma Channels live stream. Ppl were raving about it over there and he gave you some props on this build.

[@tatemcaluney7269]

I am back at this video because it is such high quality and I wanna learn more about tesla coils... Zach, you are so inspiring and always amaze me with what you can accomplish. My biggest question is how did you learn how to design your own PCB's?! That blows my mind. PS, I enjoyed the piranha solution video! Happy Holidays!

[@LabCoatz_Science]

Thanks Tate! I mostly taught myself how to make the PCBs. I use the EasyEDA website, which makes it fairly straightforward and, well, easy! I used EasyEDA again recently to develop a custom guitar pedal, as well as my latest SSTC, which I'm hoping to demo sometime in early 2022.

[@tatemcaluney7269]

@@LabCoatz_Science Thanks, I'll check it out. And I'm looking forward to more of your content!

[@ngc253]

I love how cool your Tesla Coil look. You show everyone science can be so cool and fun besides being important. Good job man! I would like to win a PCB for this Musical & Interrupted Tesla coil!

[@dhameliyaarpit8665]

Thank you so much for your amazing work. I really appreciate your well detailed video and thanks again for the files. Well done.

[@jamesstoffel6835]

Good tutorial, with a nice collaboration. Thank you for posting.

[@LabCoatz_Science]

Thank you for watching!

[@BackMacSci]

LETSSSS GOOOOOOOO

[@bonpas4]

Hi, Thank you so much for such an opportunity. Well done ! Can't wait to walk on your steps ...Let's the dream come true. The big pcb would be really very fine ...Thank you so much and keep doing well

[@RussPanneton]

Great circuit design because it's so simple and therefore reliable. And thanks for the Gerber files for the PCB!

[@uncle_thulhu]

I'm sorry, you consulted KZbin Tesla coil experts and you left out styropyro and photonicinduction?! Well, I guess you did say "experts", not "lunatics".

[@newmonengineering]

Just found this channel subscribed! Very cool PCB you made there. That large new one is awesome. I like the content keep it up.

[@nicklee8907]

super stoked to see such great progress after the first SSTC video! I would totally take a free PCB as motivation for me to finally make one for myself :)

[@fno8205]

I like that you can control the pulse width.

[@RAVI171175]

Thanks dear for the PCB as I was successful with mine.

[@RAVI171175]

kzbin.info/www/bejne/jYLWd2SIhrtnmq8&feature=share

[@RAVI171175]

You can check the video. I've mentioned it from you the PCB. Wish you success ahead.

[@winniepooh4130]

@@RAVI171175 Is this a two layer PCB or single layer PCB?

[@yourboi1842]

Hey labcoatz I left a bunch of comments on your videos but I got this sstc working. The arcs are about 8 or something inches at half power mode and are absolutely magnificent. I already ordered pcbs and built up Your staccato drsstc and class-e I just need to build coils and casings for them. I’ve researched the shits out of dual resonance and it sounds easy enough. I just need to get the resonant frequency with a scope after I build it and then add a matching capacitor. I’m also looking into true qcw and I ordered the parts for a low voltage qcw coil that fits in your hand and does true qcw. Real qcw is too expensive and out of my reach. This is a new hobby I need more of these.

[@Greenorange0]

Well.. I am really happy with the output from your circuit it works as chim. I love it thanks for your support

[@LabCoatz_Science]

Glad to hear it! I actually just published a new Tesla coil tutorial today that will go public in just a few hours!

[@Greenorange0]

I would love to do the qcw .

[@smburhan6323]

Great! ahh one thing i wanna say is that any PCB would work as im happy to receive anyone, im not that good with circuits but ive watched some video and made one tesla coil of my own, so yea this looks simple enough.

[@ianfisher6561]

A great presentation of a solid state Tesla Coil build. Thank you for sharing your fantastic efforts. I have just subscribed.

[@LabCoatz_Science]

Thanks man! This circuit will soon be featured on Plasma Channel, so I'm hoping the design takes off! I'm currently developing an even better SSTC that uses staccato ramping to create even larger sparks, so stay tuned!

[@ianfisher6561]

@@LabCoatz_Science Thank you for your response. I will let you into a little secret, I am 67 years old. All my life I have had an interest in high voltage and some chemistry. At my age I am pleased to tell you that these interests have remained with me to this day. I also subscribe to Plasma Channel. It's really great to watch you guys developing the next range of high voltage generators.

[@LabCoatz_Science]

@@ianfisher6561 great to hear it man, it's pretty awesome that you've maintained your interest for so long! Hopefully I can continue to teach great people like you new stuff through my channel!

[@THYZOID]

Im actually considering to build one myself! Nice and detailed video

[@LabCoatz_Science]

Thanks! Feel free to reach out if you ever get stuck or have a question!

[@RAVI171175]

Hi there to you Zach. I just wanted to know your secondary coil diameter & height of coil windings plus which wire gauge you've used for the secondary & at the same time the resonant frequency of the secondary. Thanks man for all your helpful videos. Just keep it going & take care.

[@LabCoatz_Science]

Sure! My coil is 8" tall, 4.25" in diameter (a 4" ID PVC pipe), and wound with 32AWG magnet wire. With its 9.5" wide by 2.5" tall toroid, the resonant frequency is around 250kHz. It honestly doesn't matter the frequency of your coil, as long as it's below 400kHz or so (the IGBTs heat up more above 400kHz, since they don't switch as well). You could also get bigger sparks from a bigger coil/topload, if you design it right!

[@RAVI171175]

@@LabCoatz_Science Oh hi there to you dear & many thanks for your fast & prompt reply. Very humble & nice person you are. Once again , thanks.

[@winniepooh4130]

@@LabCoatz_Science Can you please tell me if the PCB for this coil is two layer or single layer? Also, will it effect the operation of the coil and if I make it as single layer?

[@Magneticitist]

Sweet bro that turned out good!

[@LabCoatz_Science]

Glad you were able to be a part of it!

[@Lowang_Productions]

I have been experimenting with spark gap Tesla coils with great success. I want to build a solid state, but the problem is that I don't know what I don't know. Great video and I would love to have a board to build!

[@Stoneman06660]

Smashing stuff and so well presented. Bravo, sir!

[@5minutehacks989]

I would love to win one of the PCBs for the new circuit! I've built a Rotary Spark Gap tesla coil in the past, but had some issues with my capacitors failing and lately i've been wanting to make a musical tesla coil! Recently found your channel and this video was a nice surprise! Would love to build a new coil with the knowledge i've acquired over the past year, and your circuit seems like an amazing starting point!

[@koustavdas7775]

Though it is a year old video thank u for the video, learnt a lot and developed a new love for TESLA COIL . Also thanks to all the other people u mention in the video for making the amazing community of high voltage ⚡️ TESLA COIL.

[@danielbuilds9595]

Where in the circuit do you connect the music signal? Does the music signal go in place of the interrupter signal?

[@donaldclark2580]

Hey! Do you happen to have the gerber files for the doubler PCB?

[@LabCoatz_Science]

Yes! They are with the main project file on the EasyEDA website, there is a link in the video description: oshwlab.com/Zach_Armstrong/project-mjolnir. To get the Gerber file itself, click "Open in editor", then under "File" click "Generate PCB Fabrication File (Gerber)..." and save the .zip file to your computer!

[@donaldclark2580]

@@LabCoatz_Science Oh, whoops. I totally missed that since I ordered from the .zip file in the drive link 😂. Thanks again! This is seriously one of my favorite projects I’ve done. Can’t thank you enough for all the time and energy spent on this tutorial :)

[@LabCoatz_Science]

@@donaldclark2580 Hey, no problem man! My goal was to make powerful solid-state coils easy and accessible, and it sounds like I've at succeeded to some degree. I think things will really take off when Plasma Channel releases a video on this coil, but we'll see!

[@bebored9420]

Love the coils you make! In fact my profile shows a coil I made based off of your previous sstc. I would love to win the pcb for your new interrupted sstc👍👍

[@LabCoatz_Science]

Share this video around and I'll see what I can do 😉! Your channel is pretty cool, I'd love to see what you do with my circuit...

[@bebored9420]

@@LabCoatz_Science yeah I shared the vid with my buddy who also enjoys coils… rn I’m focused on school but later I hope to put a lot more effort into my channel👍

[@alexhacker962]

I really loved your video. Can you tell how to play music in this coil in a detailed way, because I don't know how to generate a 5 to 12v pwm audio signal without audio mixer. Thanks again for your effort

[@LabCoatz_Science]

I just took a 12VDC power source (a wall wart or 12V battery will do), and switched it with a transistor. The audio signal I wanted was applied to the transistor's base (or gate, if you're using FETs), which causes to 12VDC to be switched on and off at the same frequency, resulting in audio modulation. My music source was an Arduino, but it could also have been the AUX output of an old .mp3 player. Hope that helps!

[@martijn4740]

awesome project and very nicely executed keep up the great work

[@nomythstudios]

12:10 looks exactly how the flash's lightning and also would it be possible to make the flash's lightning trail

[@nomythstudios]

So if there was a spray mechanism that sprayed copper ink or paint that is conductive if a tesla coil shocks it would it make a electric trail

[@LabCoatz_Science]

Anything is possible, you just have to apply yourself to whatever you're trying to do and make it happen! That's my thought anyway!

[@nomythstudios]

@@LabCoatz_Science ok

[@dash8brj]

I like this design - a self tuning coil, and the PCB's are available for download - I just ordered some, in black from a PCB Fab joint :)

[@Waveydonkillah]

Why don’t you have 1 million views yet?

[@latenightprojects]

Very cool results. I'm gonna build a similar one but I with a cw and music mode. For music mode I'll probs use an op amp circuit.

[@latenightprojects]

I built it and it works great! I'm soon gonna post a vid about it

[@drdoom1949]

I have decided to build this SSTC. Have all my parts, but wondering if there are any pics of some of the components off board??

[@LabCoatz_Science]

As mentioned in the video, everything you need can be found in the video description (specifically in the .zip file you can download at this link): drive.google.com/file/d/1wxN65FXPShwtCUycTeOx5A66eealnN_j/view In particular, there is an image entitled "wiring" that shows how to connect the off-board components. Hope that helps!

[@drdoom1949]

OK!!!! Got all my parts and circuit board. NOW!!! started winding the coil... At the ripe old age of 73 my fingers don't seem to want to work like they did at age 21.... So I'm currently trying to build a coil winder maybe somewhat primitive, but effective.... Is it ok to post pics here of my build or do you have specific area to do so. I find this site very informative THANK YOU FOR YOUR WORK

[@LabCoatz_Science]

@@drdoom1949 glad things are coming along! If you want to post pictures, I do have an Instructables page (link in the video description) where you can show that you made the project. I also have a Tesla coil Discord server where people frequently post their work and/or questions about it.

[@CHO-cx8bi]

Omg i love this ! Thx u for information ! I don’t want pcb, just a french translate please 😭 Good Work 👍⚡️⚡️⚡️⚡️⚡️

[@raffyturc]

nice! didnt know about the 'primary coil impedance' until now (or maybe ive forgotten all about it). I want both PCBs 😁

[@Shagwellsback]

Would love one of the pcbs I was just getting into making something like this. This is awesome!

[@ParentsandProjects]

Great vide LabCoatz. Well done. Sign me up for one of these PCB's 😄. Would love to attempt this project.

[@HoorGuvLabs]

i'll be trying this, looks like a good circuit.

[@TeslaExplorer]

We need more videos like this!

[@Wolf-3.5.9]

Very cool Tesla coil! I just ordered the PCBs. What are using with your tablet for a oscilloscope?

[@LabCoatz_Science]

This is my scope, although I actually never needed it during this build: www.amazon.com/Oscilloscope-Bandwidth-Sampling-Multifunction-Portable/dp/B08KVVXFHV/ref=sr_1_3?crid=3M4N6YJ7GYS89&dchild=1&keywords=tablet%2Boscilloscope&qid=1635818863&qsid=134-6485940-7462763&sprefix=tablet%2Bos%2Caps%2C157&sr=8-3&sres=B08KVVXFHV%2CB08L3FRKYF%2CB01N06EHDJ%2CB0833YFNKP%2CB08KCHR1T4%2CB009H4AYII%2CB07HQ9S4XN%2CB07TB8V2X1%2CB079CPDVRG%2CB07MKDYVVL%2CB08HCRGPYJ%2CB06Y62BZ4N%2CB095JPC6RY%2CB099S4QP3T%2CB08KGYL8CN%2CB099DVQ43S&th=1

[@Neptunium]

Hello, I know this is a long shot but I am trying to build (or find) a high voltage square wave AC power regulated supply for a future project. The input should be 110V AC and the output between say 10KHz and 1MHz (adjustable) at 200Kv and higher, also adjustable. I dont know enough about electronic and I thought you could point me in the right direction? Thank you for your time and consideration, Respetfully.

[@SpectrumDIY]

Heck yeah, that was good stuff, cheers for sharing!

[@joaoDLDS]

Really nice design! Is it possible to use the 555 pin 5 to modulate the frequency with a jack 3.5? Same as keystone science used on his flyback speaker..

[@LabCoatz_Science]

More than likely, although I'm honestly very new to 555 timers and logic technology! I designed the PCB with a "music port", which will take any 12V pulsed-DC signal (from, say, a modulated 555 timer setup) and use it to interrupt the SSTC. So, in theory, if you build Keystone Science's 555 setup and run it on 12V, you should be able to get decent audio modulation from this circuit. The only thing to worry about is the duty cycle: if the interrupter signal exceeds 25-30% duty, the UCC chip and IGBTs start to get hot. That's probably a bit of a long response, but hopefully that answers your question!

[@chunloonglow5905]

hi, great video! i just copied this circuit recently. the circuit is working, just i get the continuous wave (CW) instead of interrupter mode . both of my potentiometers not responding even though i shorted the interrupter as i not planning to input any musical mode by leaving the audio input alone. it can last only less than a minutes and the IGBT burn off and trips the circuit breaker. should i replace 1 of the 1N4007 diode to jumper as Jay from Plasma Channel? please advise & thanks!

[@LabCoatz_Science]

There should be no need to replace any of the diodes, as the issue with Jay's PCB was only applicable to his PCB. If you bought your UCC27425 from a source like Amazon or eBay instead of Digikey or Mouser, then that is your problem. UCC drivers from sites like this often come without usable enable pins, and are pretty much worthless. Of course, if you sourced your parts from the recommended websites, you might just have a bad 555 timer. Hope that helps, good luck!

[@chunloonglow5905]

@@LabCoatz_Science noted your message! i will try swap the 555 timer 1st, else will source trustable UCC from Digikey/Mouser.

[@teocaggia959]

Hi Zach, awesome build. I was wondering if there is any IRFP mosfet that I can use instead of the IGBT, any suggestions? Thanks a lot.

[@LabCoatz_Science]

Possibly IRFP460s, I know one viewer of mine used them successfully (but the power handling is lower than the IGBTs I recommend, so you can't push the circuit as hard). Overall, MOSFETs aren't really the best option for this coil, it's better to just spend the extra dollar or two to get real IGBTs. Hope that helps!

[@rolliepollie6546]

Yes you finally uploaded

[@vincenzopappaterra4159]

I have just finished building the circuit and everything works perfectly but once I have maxed the on-time both IGBTs are dead. Why?

[@LabCoatz_Science]

This circuit is not designed for duty cycles over 30% or so. This simplistic design doesn't soft-switch the IGBTs, so they will really heat up if the duty cycle is too high. It's also possible that your primary impedance is too low. Your best bet is to change out the IGBTs, add an extra turn to the primary coil, and make sure you don't push the duty too hard next time. I also have a detailed Instructable (link in the description) written up about this build that should help with further troubleshooting, should you need it. Hope that helps!

[@vincenzopappaterra4159]

@@LabCoatz_Science My primary is made up of 6 turns and its impedance should be over 8 ohms so I think it's fine. Anyway I replaced the IGBTs but now I have another problem. The frequency and pulse width controls don't work. The circuit is inside a metal container connected to earth and therefore I don't know what it could be due to

[@bobtom3995]

Hello i am wondering can I run this circuit lower power with the variable transformer?

[@LabCoatz_Science]

Yes, I've ran mine as low as 12V before (although you must ensure the LV section still gets the necessary 14-24VDC).

[@bobtom3995]

Awesome does that mean I will have to power the low voltage circuit separately and use the variac for the line voltage side ?

[@LabCoatz_Science]

@@bobtom3995 Yes, that's correct. I actually did that with my staccato QCW DRSSTC I built in a recent video, since it needed 240VAC but the 12V transformer could only handle 120V!

[@bobtom3995]

OK great thank you

[@petername2608]

I saw the Gerber file ,can you post the easyeda file also

[@LabCoatz_Science]

You can access the EasyEDA file here, along with Clayton's doubler PCB: oshwlab.com/Zach_Armstrong/project-mjolnir

[@petername2608]

@@LabCoatz_Science nice work will try this coming month.love from india

[@Peter_Schluss-Mit-Lustig]

Is the Variac used to power this thing necessary?

[@LabCoatz_Science]

Nope, it's just somewhat helpful during testing and it can help you control your spark size better

[@Peter_Schluss-Mit-Lustig]

@@LabCoatz_Science thx

[@Headbutter-Lettuce90]

I'm interested on the SSTC v2.0 PCB

[@LabCoatz_Science]

Share this video around, and I'll see what I can do! 😉

[@Headbutter-Lettuce90]

@@LabCoatz_Science alright mate, already shared it on a discord science server and a facebook group

[@ruxxy_j5667]

Awesome channel dude

[@LabCoatz_Science]

Glad you like it! Depending on what you like, I should have a new video out soon on an even better solid-state Tesla coil as part of a collab with Jay from Plasma Channel. I'll also be releasing a ton of new chemistry videos as well, so be sure to stick around if you like that kind of stuff!

[@ruxxy_j5667]

@@LabCoatz_Science That's great! Since I'm still an undergraduate, I don't know much about science. However, I really love it. And hope to learn more. I'm looking forward for the collab. Also Good luck on your work! Love from Sri Lanka

[@tristanlee1171]

Hi again Zach, feel pretty nooby asking this, but would it be viable to make the power supply variable? I was thinking of a boost converter if it could handle it.

[@LabCoatz_Science]

It's certainly possible! Since the big capacitors take care of all the high pulse currents, you basically just need a strong enough DC voltage supply to charge them with. I obviously used a bridge rectifier running off mains, but an adjustable boost converter could work as well, as long as it can provide a decent amount of current (I'd say over 5A if you want to run at higher BPS/pulse width). Hope that helps, good luck!

[@NerdlabsSci]

Awesome! love how your coil came out!

[@fabricioalpizarrodriguez1543]

Where can you get the lithium carbonate electrode? I love how the beam looks with that electrode. New subscriber!!!

[@LabCoatz_Science]

Glad you liked it, it was far more stunning in person! Unfortunately it's not something you can buy: I had to make it. All you need is a lithium compound and a pointy metal object to serve as a breakout point. I got my lithium from an Energizer Ultimate Lithium battery and I burned it in air until it was a white powder. I then used a torch to melt the powder onto the tip of a nail, and voila! instant red sparks! Hope that helps!

[@fabricioalpizarrodriguez1543]

@@LabCoatz_Science Thank you very much for the information, it will help me a lot. Another video of yours also helped me a lot where it is better shown how you created that electrode.

[@RAVI171175]

Hi there. 1 question though! Can I use 1 micro Farad/600V caps instead of those 0.82 caps? I have some 0ne UF CBB caps /600v. Hope it won't change a great deal the primary resonance frequency!

[@LabCoatz_Science]

Those should work fine, the circuit is self-resonant, so the capacitance has little effect on the output. The original Loneoceans SSTC 2 used a 4.7uF capacitor, if that give you any perspective. It is worth noting, however, that a lower capacitance will typically lead to a lower impedance and a higher capacitance will lead to a higher impedance. Just use the calculator I linked to to find the LC impedance, make sure it is around 6-7 ohms for best results, and have fun!

[@RAVI171175]

@@LabCoatz_Science oh hi there. Thanks for the info.

[@poorlyengineered1018]

I was thinking of making an upgrade to the igbts. Any recommendations? I found an igbt that meets all the criteria, but I'm not sure if it will switch fast enough. It's switches in the 30 khz range, and obviously my secondary is way above that frequency.

[@LabCoatz_Science]

To find the IGBT's max switching frequency, look at the datasheet and find the switching times: the rise time, fall time, turn-on delay, and turn-off delay. Add these values up, and divide 1 by the summed value (measured in seconds...the datasheet usually gives the switching info in nanoseconds, so multiply the summed value by 10^9) to get the absolute max frequency in hertz. I don't actually recommend going near this value though, since it is most often in the megahertz range. To be safe, stay below 1MHz. I'd say most (if not all) IGBTs you'll find can handle above 500kHz (and maybe up to 1MHz if they're small). Larger "brick" IGBTs, however, probably won't be happy much above 250kHz, although I'm not sure this driver is capable of switching transistors of that size. Hope that helps!

[@poorlyengineered1018]

@@LabCoatz_Science Wow thanks for all the help!

[@LabCoatz_Science]

@@poorlyengineered1018 Glad I could help! Honestly, my newer Tesla coil is far superior to this one, and it's much easier to build using the PCBs files I have available for download. It's a staccato QCW DRSSTC, and it can be built for roughly the same price as this one, but it all fits onto one PCB, can produce nearly silent sparks (similar to the VTTC I see you made on your channel), and doesn't have impedance issues like this one. You can also smooth the power input with a large capacitor to get traditional DRSSTC-type sparks. Just thought I'd share, good luck!

[@poorlyengineered1018]

@@LabCoatz_Science Thanks! I'll check it out. Love your videos. My channel is just for posterity so I can remember my builds when they inevitably explode...

[@groundkopi5975]

Hey, what do I do if I don't have UCC mosfet driver? it's really rare in my country. Can I replace it with other driver? like TLP250 or a TC4420. I'm not experienced with mosfet driver

[@LabCoatz_Science]

Unfortunately, I don't know of any suitable replacements. The cross-reference sites aren't turning up anything either. Fortunately, you can still find such ICs on eBay, although the price isn't as good as I got mine for. If you win a PCB, I'll be sure to include one of my extra UCC27425 chips 😉

[@lynikx9eck30]

Hey i really like ur vids. I wanna build this but some parts aren`t at stock are there any alternates for: TC74HC14APF, CFR-25JR-52-1K and SL32 1R030-B?

[@LabCoatz_Science]

Sure! You just need to look at what they are and try to find the same thing. For instance, the CFR-25JR-52-1K is just a 1K resistor, so pretty much any 1K resistor you find will work. The SL32 1R030-B is the NTC thermistor, which can be subbed with any 1-2 ohm NTC thermistor that can handle over 15A (for example: www.digikey.com/en/products/detail/cantherm/MF73T-1-2-18-L3-4-1MM/10508386?s=N4IgjCBcoExgHDKoDGUBmBDANgZwKYA0IA9lANogwAEA8gBYC2uIAusQA4AuUIAqgDsAll1roAsvky4ArgCd8IAL7EAtEmgg0kLnJlFSFEAFY2SlVSNd6%2BOYyG4uJOWaA). Finally, the TC74HC14APF is just the 74HC14 Schmitt trigger. I didn't find any non-surface-mount options still in stock on Digikey, but I did find plenty on Mouser.com: www.mouser.com/ProductDetail/Texas-Instruments/SN74HC14AN?qs=sGAEpiMZZMutXGli8Ay4kKXolc%252BuJcYSI8Zm1tsRwM0%3D Hope that helps!

[@lynikx9eck30]

@@LabCoatz_Science Hey thank you sooo much but can you sned me a alternate for SL32 1R030-B on Mouser?

[@LabCoatz_Science]

@@lynikx9eck30 Sure, although they are relatively easy to find (just look up SL32, click the "Inrush current limiter" option, and look for the specs I mentioned): www.mouser.com/ProductDetail/Ametherm/SL32-1R030?qs=PVyXUKBeRH1CbhaJj8OEcQ%3D%3D

[@lynikx9eck30]

@@LabCoatz_Science hi can I also use the tesla coil with 24v input? My parents say it's too dangerous.

[@LabCoatz_Science]

@@lynikx9eck30 Maybe, but the output would be significantly lower (maybe only a inch or so). For 24V, I would recommend this model: kzbin.info/www/bejne/eZKVlmabq9yJgZI. It has far fewer components, so it is quite cheap, and is much easier to build (in fact, it was the first SSTC I ever built!). In regards to the danger, I've had similar experiences with my own parents. They didn't believe me when I said it was safe until I showed them I could touch the 12" sparks with my bare hands, lol! This circuit is remarkably safe, the only way you could get hurt is if you touched some of the higher voltage parts (i.e. the inverter circuit) while it is running. The secondary circuit is practically incapable of hurting you (unless you touch the arcs for too long, then you might get burned from the heat). Anyways, good luck with whatever circuit you choose to build!

[@poorlyengineered1018]

Hey, In your schematic, pin 2 and 6 of the 555 timer are connected but in the picture you posted of the pcb I don't see a path for those pins to be connected. Am I missing something?

[@LabCoatz_Science]

No worries, if I said they're connected on the schematic, then they're connected on the PCB. I probably just made the connection on the underside of the PCB where you can't see it.

[@RAVI171175]

Hi Zach. I think you might be the man of the situation for my SSTC problem! Well, I finally build your SSTC but I'm not having any output despite my tube light is lighting very brightly and flashing at the same bit rate I set on the interrupter. The resonance frequency of my coil is 320KHZ & there are 5 turns on my primary. The biggest problem that I noticed is that my UCC27425 is sort of boiling . only for testing purpose, I set my Variac on 50Vac & i did the same setup as your power supply with the 1000uF/450 VDC Electrolytic cap & the thermistor. Both coils are properly tuned as my lamp is lighting up brightly when I put it near the secondary & flashing at the same frequency as per the interrupter. So, why is the UCC 27425 boiling up & why don't I get any sparks? Grateful if you could help. Thanks

[@LabCoatz_Science]

Try swapping the connections on the primary coil. If the primary is connected the wrong way, the circuit will work very poorly (weak output, lots of heating). This is the most likely issue. If that's not it, I'm not really sure what it could be...it could be that your UCC is faulty in some way (this could be especially true if you bought it from some place like AliExpress, Amazon, or eBay).

[@RAVI171175]

@@LabCoatz_Science I bought mine from Mouser but the problem is that I can't myself understand where pin 1 is as there's no dot nor any indication to know if you've placed it well or wrong! Whereas for my other UCCs, I can clearly see where pin 1 is. It's very strange as coming from mouser, I didn't expect things to be same quality as China. Maybe they shipped to me faulty UCC!

[@RAVI171175]

Thanks anyway. I'll try sort out the root cause of this problem as I've already swapped the primary wires but the UCC keeps boiling!

[@theGraphicAutist]

ON THE PCB, WHAT DO I DO WITH THE INTERRUPTER ON/OFF AND ALSO THE MUSICAL INPUT? I'M NOT USING AUDIO INPUT SO DO I LEAVE IT ALONE? AND FOR THE INTERRUPTER ON/OFF DO I PUT A SWITCH OR JUST JUMP IT?

[@LabCoatz_Science]

If you're not using audio input, just short the "ON/OFF" connection. This connection is what allows the interrupter's signal to reach the UCC driver, and it should only be disconnected if you're trying to interrupt the coil with your own pulsed 12VDC source (if you try to input a 12V music signal while the switch is on, the signal will destroy the 555 timer). Hope that helps!

[@theGraphicAutist]

@@LabCoatz_Science Thank you! I'll send pics if it works. so short the interrupter on/off and leave the musical input alone?

[@theGraphicAutist]

@@LabCoatz_Science Sorry to bug u again, so b4 making it look pretty, I set it up to make sure it worked and... it worked! Really well! but when i made a structure for it and put it in its final config it now does not work! I got it to spark a tiny bit and then the lead from the zener to the gate resistor to the 105 cap in front of the gate drive IC started to arc. i replaced the zener the gate resistors and the 105 cap to be safe. Still doesnt work but when i cut power to the 12v side it gives a giant spark(at the 2ndary coil where it belongs), so i know its kinda works. One thing I did notice back when it DID work is sometimes I'd have to fidget with the antenna to get the arcs to start. Is it antenna, grounding, or maybe board got damaged when it roasted the cap and resistor? Any help much appreciated. thnx again

[@LabCoatz_Science]

@@theGraphicAutist Glad to hear you got it working, if only for a short while! I've only seen arcing on the PCB once before, and it was because of bad grounding: if the PCB isn't grounded, but the secondary coil ground is connected to it, it will arc across circuit traces in an attempt to reach ground. I do recommend changing the circuit board, especially if the arcing caused carbon tracking or burn marks on it. The only things I can think of that could cause it to stop working in the way you described are accidental poor connections (such as grounding, possibly), the interrupter being bad (or disconnected by the interrupter switch), and poor configuration of the coils or antenna. Some things you might try would be swapping the 555 timer with a new one, switching the primary coil connections, and using a longer antenna closer to the secondary coil. My antenna is roughly 6" long and is within 6" of the secondary coil base. I've also accidentally fried my 555 timer before by feeding in a 12V music signal to the port without first disconnecting the 555 interrupter with the switch, and since you were asking previously about musical input, I'm guessing this could have happened to you as well. Hope that helps, good luck!

[@theGraphicAutist]

@@LabCoatz_Science Thanks I'll check it out. oh wow! I just thought of something. the pcb ground is now being shared with the 2ndary coils ground!

[@psychespring]

Hi, fantastic tutorial which has been made so simple yet very effective. Just to ask a question, according to my build, the primary capacitance calculator say it to be 0.33uF which makes total LC impedance 6.96Ohms. I’m willing to hear from you if the value of capacitance seems correct or low?

[@LabCoatz_Science]

That seems like a reasonable capacitance to me! It all depends on your primary coil and the secondary natural resonant frequency. 0.82uF is what I used for my setup, but I could've also used 0.33uF without a problem.

[@Electronic4081]

Hey, how many turns of wire was your secondary? Also what thickness of wire did you use? Great video!

[@LabCoatz_Science]

Not really sure, it's 32AWG wire on a 8" tall coil, but quite frankly, it doesn't really matter.

[@Electronic4081]

@@LabCoatz_Science Thanks for the reply! Also to turn the interrupter on and off, is it just a matter of shorting the pads labeled interrupter on/off? And would it be bad to run the coil at the largest pulse width and the largest frequency? Thanks again, I definitely wanna build one of these!

[@LabCoatz_Science]

@@Electronic4081 Yes, the interrupter on/off needs to be shorted for the interrupter's signal to reach the UCC, otherwise the circuit will enter CW mode which could damage it. That also kinda answers your other question: if the duty (the combination of frequency and pulse width...basically what percentage of the time the circuit is "on") is over 25-30% or so, the UCC and IGBTs heat up quite a bit, so I recommend doing long pulses for only low frequencies. Hope that helps!

[@Electronic4081]

@@LabCoatz_Science Thanks so much for your replies and video! I have been wanting to build a SSTC for years and this video is exactly what I was waiting for! I have a SGTC but it definitely gets old. Thanks!

[@jackbenner1013]

This circuit is awesome!

[@Neptunium]

Nice little device! I am looking to build one for a project but need to get a very clean signal frequency out put and I have to know the voltage coming out of it. Do you know how clean the RF is ?

[@dericklong6191]

Is there any way I can buy one of these?

[@LabCoatz_Science]

Buy what? An assembled Tesla coil?

[@dericklong6191]

@@LabCoatz_Science no the pcb with all the components

[@LabCoatz_Science]

@@dericklong6191 There isn't an official service that I know of, but if you have the money and want a fully soldered and tested PCB, I might be able to mail you one. For all the parts, shipping, and PCBs, it would cost roughly $80-90, and that goes for basically any of my coils.

[@dericklong6191]

@@LabCoatz_Science can I have you're email? I'll buy one for sure. Thank you

[@LabCoatz_Science]

@@dericklong6191 You've had it the whole time, on the channel's "about" page: [e-mail]. Send me your address, and I'll send you the very circuit powering the SSTC in this video, power source and all (after receiving payment, of course).

[@AdilAdil-qk9ee]

which frequency are developed in any 555 timer IC section please reply

[@raven_fpv]

@5:49 What are the 2 blue 1uF block right above the area marked "PRIMARY"? I do not see those in your BOM.

[@OutdoorsPNW]

I hope he responds to you 🤣

[@streachslim]

Hey do you have anymore of those.driver boards left over from your Tesla coil? 🎉

[@LabCoatz_Science]

Unfortunately I don't, they've all been given away. But you can download the files in the video description and order your own set from jlcpcb.com for pretty cheap!

[@peteoselka5285]

Hello, thank you so much for this video. I'm currently making my own and I was wondering if I could run this circuit safely without the inrush current limiter because I forgot to order it and if not, are there any electronics that use them that I can desolder from?

[@LabCoatz_Science]

Good question! It is possible to run the circuit without it, but it might pop your diodes in the doubler/rectifier, leading to failure of the IGBTs. Brian from SciTubeHD had this issue, and he avoided it by cranking up the voltage to his circuit with a Variac over a few seconds. Essentially, any soft-start circuit will work. I don't think you'll be able to salvage a thermistor of appropriate size, but they can be easily bought from Amazon or eBay. Just look for an SL32 thermistor rated for over 15A and with a resistance near 2 ohms (1-3 ohms is good). Hope that helps!

[@peteoselka5285]

@@LabCoatz_Science Thanks that's very helpful, can't wait for the QCW video.

[@niklasreifenrath585]

Hi can i use speaker cable for the primary coil?

[@LabCoatz_Science]

You can use anything that is thick enough to handle a few amperes without burning up (ideally, I recommended anything large than about 18AWG, so 12AWG speaker wire should work fine).

[@AdilAdil-qk9ee]

Hello, bro, please reply which material GDT core are commonly used in sstc Tesla coil. Ferrari coar or other material

[@donaldclark2580]

Hello! I just finished building this circuit, and so far, it’s working great! I absolutely love the simplicity and the arc size from such a small and cheap setup. I did however have one issue… when I switched the coil to music mode, and didn’t have anything connected to the music port, it operated continuously (CW), and I unplugged it quickly. Is this normal or not? I appreciate your help, as I’m sort of a beginner with this stuff. Thanks!

[@donaldclark2580]

Also, what are your recommendations for circuits/methods of generating a good music signal for the music side of things? Thanks!

[@LabCoatz_Science]

@@donaldclark2580 Yes, that's completely normal (without the interrupter's signal applied, the driver is on continuously, as far as I can tell). In regards to generating music, the signal entering the music port must be pulsed DC (a DC power source switched on and off) with a peak voltage between 6V and 12V. I create such signals from lower voltage musical signals (like those made by an Arduino or a MP3 player to power its headphones) using a transistor of some kind. By applying a low voltage signal to the base and emitter (or gate and source, in the case of MOSFETs), we can switch higher voltages (from something like a 9V battery), and thus amplify our signal enough to control the gate driver chip. Hope that helps!

[@donaldclark2580]

@@LabCoatz_Science Thanks! I really appreciate the help. I’ll try using a transistor and let you know how that works.

[@muraterdem5976]

Can you recommend another mosfet or igbt?

[@Greenorange0]

Can tell me the value of the .33 uf green polypropylene capacitors voltage Please I have got pcb and fixed all other stuff I dont know about that please help me

[@LabCoatz_Science]

If you check the Instructable I wrote for this build, you'll see that for all low voltage capacitors, anything over 25V should be fine.

[@dericklong6191]

I need a driver like this bad for my tesla coil. I'm new at this and I'm trying to find a good mentor to help me. How can i get in contact with you?

[@LabCoatz_Science]

I'm not much of a mentor, tbh. I've helped a few people with their coil problems in the past, but with college, I've never had time to fully TEACH somebody about Tesla coils. That's basically what these videos are for, and most (if not all) of the essential information can be found in them. If you have specific questions or want advice, however, feel free to comment here, and I will answer you in the same way that I have answered all who have inquired before. I also run a Discord group (the "United Coil Builders", linked on my channel), where you can ask just about anything and get input from hundreds of knowledgeable coilers: discord.com/invite/4rh6QkZ3ej I will tell you right now though: their isn't much to coiling. It's easy to worry about small, unimportant things like wire gauge, component ratings, and precise dimensions, even though there isn't much reason to. As long as you build the basic circuit correctly, you will be fine! Good luck!

[@dericklong6191]

@@LabCoatz_Science sorry I didn't get to this reply before I sent another comment. Anyways this is what I got so far. Secondary 1200 turns on 15 inch long 1 and a half inch pvc then primary I have a few different styles to try but would like to know what's best for slayer exciter? Also I have 2 irfp460 but I'm not ready to run a lot of volts yet I want to start small I have a 45 0 45 transformer can I use that? Also have a 36 volt variable dc power supply 10 amps max if that would work.. I just got the zener diods for the gate to source in the mail today. Sorry for all the questions I've just been looking everywhere for answers. I'm about to go to that link you sent right now and see what it's about thanks for that man I really appreciate it. Good luck to you and you're college stuff brother..

[@dericklong6191]

@@LabCoatz_Science I do have experience in high voltage though I built a welder out of microwave transformer and built some stuff with flyback transformers and I have a few I'm just not ready to put that kind of power to a tesla coil yet.

[@LabCoatz_Science]

@@dericklong6191 No worries, I'm always happy to help when I can! There isn't really an optimal primary style when it comes to performance, although I prefer the helical style because it is easiest to set up and adjust the coupling with (coupling being how high or low the primary is compared to the center or the secondary coil). IRFP460's will work in this coil (as will most N-channel MOSFETs and IGBTs), although they don't tolerate currents as high as some other transistors, so it's best to add more turns to the primary to increase the impedance, especially if you plan to run at 340V someday. Speaking of "running at", this coil will run fine at voltages as low as 20V (although the sparks will be very small), so your 36V supply should work fine. I'm not entirely sure what a 45 0 45 transformer is, but if it outputs 45V like I think (or 90V, if two 45V outputs are wired together), then it should also work fine. This coil draws under 5A, so most supplies can feed it. I'm assuming you're building a coil similar to the one in this video. If you got the PCB for this coil...I kinda wish I'd done a better job on it, sorry, lol. It was my first one, and I regret not putting all the rectifiers and power components onto one PCB. I did that for Jay's SSTC, but I guess it's too late to share those files with you, assuming you already bought the original PCB. This design works fine, but knowing that I could've done better always gets to me, haha. Good luck on the build! Like I said before, it's easy to hype up all the little details that, in reality, don't matter too much. The main things are ensuring your GDT is hooked up correctly, using an antenna with appropriate length (I recommend over 6") and proximity to the secondary coil (mine is so close that it sometimes glows purple with corona discharge, lol), grounding the negative rail of the low voltage circuitry to stifle feedback, and shielding the circuit as needed with metal to prevent interference from messing with it. Hope that helps, and don't be afraid to ask more questions! 😉

[@dericklong6191]

@@LabCoatz_Science alright so I have no driver board yet. I just got the mosfets and I've bought a lot of different miscellaneous electronics components then once I realized I could build a tesla coil I'm hooked all I do is read about it and watch videos on it but I know I could build my own with parts I have laying around. I was going to go driverless but I'm re thinking that. I do have a 555 timer. The only 5 watt risistor I have is 680 ohm can I use that on the gate of the irfp460? Send me a couple simple diagrams for single irfp460 and 555 timer if you could please and thanks.. Oh and 45 0 40 is center tap transformer.

[@hugotallarico6447]

What range of frequencies does it resonate? thank's

[@tom3O3r]

What’s the data of the topload and how did you build it?

[@LabCoatz_Science]

9.5" major diameter, 2.5" minor diameter. I actually made a video on how I built it: kzbin.info/www/bejne/r5jRhWSMr6mjgJI Basically, it's just cardboard, some spray foam, and aluminum tape!

[@tom3O3r]

@@LabCoatz_ScienceThank you but how many minors did you use?

[@LabCoatz_Science]

@@tom3O3r Honestly, as many as I could cut. The spray foam is great and all, but it's not the best structural material (it tends to shrink as it cures, causing the topload to deform and look ugly). That's why I tried to use mostly cardboard, although some other materials like wood or plastics could also work. Using 1/4"-thick cardboard like I did, I think it took around fifty small cardboard circles to go around the toroid. Hope that helps!

[@victorp2562]

brilliant ... how many turns did you do to the secondary coil ... Haven't you tried primary capacitor to increase spark even more?

[@LabCoatz_Science]

It's hard to say how many turns are on the coil, but it is 8" tall, 4.25" in diameter, and wrapped with 32AWG wire. I believe it's roughly 1000 turns. And yes, I have messed with primary capacitors and dual resonance. The problem is this circuit isn't built for DR operation. To work well as a dual-resonant coil, the circuit should operate in ZVS or ZCS mode (the IGBTs switch when the power is essentially at a minimum, improving performance and transistor lifetime). If my circuit is operated with a resonant capacitor, the IGBTs will die almost immediately. I had my primary impedance down to only 3 ohms, and the IGBTs died very fast. That's why I mention to keep the impedance above 6 ohms in my video: if you go lower (like in DR operation, which is near zero-impedance), the transistors die. Hope that helps!

[@victorp2562]

@@LabCoatz_Science Thanks friend ... is the reason why a transistor died and went into saturation.

[@plasmapathfinder9525]

Hey buddy, you have convinced me to build one, I would love to win one of your boards you are giving away, I'm working on a Super Tesla coil Warp Drive Engine, this circuit is exactly what I want for all the different modes I need, especially the musical one!

[@TrailMaker2]

Just discovered your channel , awesome content , I would love to win one of those big circuit boards. I am planning on building 4-foot tall music tesla coil.

[@chisomodimmegwa3479]

Are you a electrical engineer? If not I'm interested to know your field of study and how you acquired all these knowledge, thank you

[@LabCoatz_Science]

Surprisingly, I'm not! I'm actually working on my degree in chemical engineering. I started studying electricity when I decided to build my first Tesla coil back in 2016. I just kept studying how they worked until I fully understood them, and if I didn't understand what a certain component did, I just looked it up and researched it until I understood. At this point, I'm by no means an expert, but I do know quite a bit, and if I ever have serious trouble, I usually consult one of the many "experts" I've come to know over the years. The channels SciTubeHD, Arc Angel, and Electromagnetic Farce are all very good at responding to questions. Hope that helps!

[@chisomodimmegwa3479]

@@LabCoatz_Science thanks very much, i got interested in tesla too recently and started researching and i’ve decided to pursue a degree in electrical engineering to know more. Also these channels you mentioned do they have a discord or do i need to comment on their videos like i did yours? Thank you

[@LabCoatz_Science]

@@chisomodimmegwa3479 Those other channels are ran by people older than me, and as far as I know, they aren't into the whole Discord thing. So commenting on their videos is probably your best bet; they might also be willing to trade emails.

[@chisomodimmegwa3479]

@@LabCoatz_Science alright thanks very much for the info, you got yourself a new subscriber🤗

[@LG-xp6fn]

Wow nice work. Thanks

[@geg_ant]

That is awesome project! What are wire gauges?

[@LabCoatz_Science]

32AWG magnet wire for the secondary and 12AWG on the primary. Nothing too special, I really could have used anything. Any wire thicker than about 20AWG should work on the primary side, almost any thin magnet wire can be used for the secondary, and the other wires for stuff like the potentiometers can also be pretty thin without issues.

[@geg_ant]

Thanks!

[@heetsojitra5020]

Hello zach i am also replicating this circuit but i have one question for limiting the inrush current should use a ballast or resistance instead of NTC?