You got some good progress though :) Quick tip , for cheaper MOSFETs you can powerful igbts and fets from old induction heaters from scrap , usually they're in good condition.
i got my 650v 30a mosfet from an old tv and a few IGBTs from induction heaters already, Usually finding induction heaters is hard so i get my components from aliexpress
I used to work at a job repairing plasma TVs among other things, and they're definitely a good source of parts. Most plasma TVs have around 20 IGBTs. Usually 200-250V, quite fast, usually ~30A each in isolated TO-220, ~10 similar speed/rated diodes in TO-220 and a bunch of heatsinks, and many 250V ~300uF electrolytics. Haven't found any proper data sheets for the IGBTs but I can say they're pretty robust at the ~60V mark as in this video..
You must make use of snubber circuit to protect your Fets. Too many cycles within a second will destroy your Fets as they'll build up heat too quickly. You must use proper staccato circuits & reduce the number of sparks output per second. There are so many variations that you must check.
my final design does actually have a snubber circuit but it doesn’t help too much because the mosfets usually die within 5 minutes anyways.I also found that lower interrupter frequencies actually kill the tesla coil quicker for whatever reason so i always keep it on maximum frequency.
Any tips for making the zvs booster efficiently work?? I made a ferrite core ei33 transformer but it draws 4a at 24v with only rectifier connected or a bulb to its output , though not any power to outputs as only the MOSFETs heat up quick
Maybe the rectifier isn't rated for the frequency or the ZVS circuit itself might be the problem, I found that using a single inductor and a centre tapped transformer is much more efficient than having 2 inductors and a single primary coil
@@ethanslab7670 Damn, it's sad, but if you can, please send a link to the diagram. If there are offensive words, I apologize, I translate with the help of Google translator.
@@ethanslab7670 you can upload the scheme to any site where you can upload pictures and then click the copy link button and paste the link in the description under the video
That's nice, its weird how a single FET is more beefier than a Half bridge, btw I'm wondering how you are interrupting it, I had some experiences with this circuit, back in November 2020 I've made it work at mains voltage with scrap FET and a 2MHz coil, now I'm trying to make it work with a 700kHz coil and it doesn't even want to work at 24v, interestingly I've made it work with a fat coil, the thing is that I saw you said your rectifier didn't wanted the HF of the ZVS which is quite weird I've used a monolithic rectifier, normally found on power supplies like PC, I was running like 50v 10A trough the slayer exciter (this was done in July 2022 with the Fat coil) it flashedover later, I was using a RC snubber and a 250 FET but i was able to make it run CW with the ZVS and normal rectifier, the rectifier got hot but no smoking or something like that, I will redo the small coil and hopefully it will work, how are you interrupting yours?
That's interesting, my Tesla coil is casted in hot glue so it can insulate against the terrifying voltages because I found out the hard way that internal arcing happens when running the coil over 50v. The interesting part of my design is that it uses 2 MOSFETs, one for driving the primary coil and one for interrupting the power to the other mosfet using a single ne555 chip feeding a variable duty cycle and frequency.
@@ethanslab7670 interesting, mine when powered by the ZVS supply in continuous wave got fried, it bypassed the PVC insulation, other thing i forgot to mention is that when powered by the ZVS the electromagnetic field got more stronger than if it was powered from some Series power supply, the electromagnetic field was able to induce voltage in all metals nearby and light fluorescents from like a meter, this was with a 75mm diameter and 160mm Height 36AWG coil, after it got fried I didn't had any money for new PVC so I got a 38AWG for free and a 33mm diameter by 120mm height PVC form which is like 700kHz with topload and primary coil
The primary currents on that thing must be insane. I've been working on some true low voltage SSTCs, and I found that the more current you can pump into the primary, the bigger the arcs are. Those arcs are huge! The two IRFP250s in parallel makes sense since on resistance would only be about 42.5m ohm. I'm using IRFP460s in a half bridge (still getting impressive arcs at 31V though), which is not the best because of their high on resistance. Maybe you could use a whole bunch of those in parallel for less chance of mosfet death (but you could run into turn on time problems) or use a TVS diode or gas plasma arrestor to save your mosfets.
I used 1 IRFP250N to switch the primary coil and 1 to interrupt the signal. I found that pulling the gate voltage down with an inverted signal won't work because the emf generated from the Tesla coil disrupts the interrupter signal. For my half bridge Tesla coils I use a 440v TVS diode and I tried using neon bulbs for IRFP250N mosfets and it makes the mosfet last a lot longer but it eventually does die anyways. Check out the stuff I posted about my 24v push pull SSTC that creates relatively large arcs. hopefully I can tune the Tesla coil and improve the circuit to make larger arcs. Also with push pull Tesla coils, the back emf is very angry and destroys snubber capacitors and resistors quickly
@Ethan’s Lab maybe a resonant mosfet slayer could save your mosfets. I've never built one, though. My low voltage (12-20v) mosfet slayer doesn't produce enough back emf to light up a neon bulb, which is interesting but also good. My experience with my low voltage half bridge is that there are almost no voltage spikes (maybe it's because of the "snubber" capacitors that I have). I'm thinking of building a push pull sstc with resonant capacitors that hopefully will make ZVS happen, but otherwise they'll just absorb the back emf.
sir i need one more little help from you animated circuit diagram Whether to put secondary wire in earth ground? S1 and R2 R3 I didn't understand this too
R2 and R3 is a voltage divider, i recommend you use a potentiometer to replace it. The secondary coil doesnt go to ground but rather into the upper mosfet gate.
Have you tried protect transistor with external zener-diode rated as same voltage as the transistor? I gonna try it in my next tesla coil play sometime.
i didnt have any 200v diodes for my irfp250s but i used 440v diodes for my irfp460s and they died anyways. I found that the only way to save the transistors is to use a lower input voltage to begin with and using a push pull driver with snubbers, that way the transistors have never died on me.
I have a different design . A meissner oscillator. And that circuit is not a mosfet hazard . It uses the primairy coil as feedback . It is basicly a double slayer exiter whitout earth in the low voltage circuits. Earth can now directly be connected to the secondary coil . This circuit creates a alternating current in the primairy coil . And the nice thing about this circuit is that it also can function whitout earth. It works better whit earth but whitout earth de signal is not so killing for my mobile phone 😂
That Tesla coil circuit doesn't have secondary feedback so the resonant frequency will change too much and the arcs will vary. Also the circuit doesn't support the same voltage as the Slayer exciter I made.
@@ethanslab7670 well , to make the circuit oscilate . In the Slayer exiter , you have the secondary coil as feedback to switch the transistor. Whit a meissner oscillator , you have the primary coil and feedback capacitors to make the oscillator switch on and of . I have the design on my channel , and sorry English its not perfect.
@@ethanslab7670 it isn,t , now i must say that i use bipolar junction transistors instead of mosfet . But heat is not that much . In my video you can see that i use 1 cool element whitout a cooling fan .
@@ethanslab7670 and the frequency is a stable 650 khz . Using the 10 turn primary coil and a 4,7 nf tank capacitor. BUT as i said in my video i hope that someone tries this circuit and share the experience.
Hello. I'm very impressed with the tesla coil you made, it's really put in the effort. I couldn't find his Discord. Because within 1 year, he started using a username on discord. I was enthusiastic about this tesla coil. Can you give me a snapshot. Or the new discord. I need help with a Tesla coil.
Every tesla coiler's worst nightmare: Ded MOSFETs
Lol. Keep up the good work!
Love this thing. Well done!
You got some good progress though :)
Quick tip , for cheaper MOSFETs you can powerful igbts and fets from old induction heaters from scrap , usually they're in good condition.
Where can you get old induction heaters?
i got my 650v 30a mosfet from an old tv and a few IGBTs from induction heaters already, Usually finding induction heaters is hard so i get my components from aliexpress
@@dougfoster445 induction cooktops are very common
I used to work at a job repairing plasma TVs among other things, and they're definitely a good source of parts.
Most plasma TVs have around 20 IGBTs. Usually 200-250V, quite fast, usually ~30A each in isolated TO-220, ~10 similar speed/rated diodes in TO-220 and a bunch of heatsinks, and many 250V ~300uF electrolytics. Haven't found any proper data sheets for the IGBTs but I can say they're pretty robust at the ~60V mark as in this video..
@@ethanslab7670 Aliexpress components can be fake and can have lower specs than what they're supposed to be (blowing up at lower voltages).
You must make use of snubber circuit to protect your Fets. Too many cycles within a second will destroy your Fets as they'll build up heat too quickly. You must use proper staccato circuits & reduce the number of sparks output per second. There are so many variations that you must check.
my final design does actually have a snubber circuit but it doesn’t help too much because the mosfets usually die within 5 minutes anyways.I also found that lower interrupter frequencies actually kill the tesla coil quicker for whatever reason so i always keep it on maximum frequency.
hi sir i watch your all video and i like your all video very much and very useful and also share your video in my group
Any tips for making the zvs booster efficiently work?? I made a ferrite core ei33 transformer but it draws 4a at 24v with only rectifier connected or a bulb to its output , though not any power to outputs as only the MOSFETs heat up quick
Maybe the rectifier isn't rated for the frequency or the ZVS circuit itself might be the problem, I found that using a single inductor and a centre tapped transformer is much more efficient than having 2 inductors and a single primary coil
your lucky i have killed 20 mosfets with no real success
rip
@@leonardoantonio6025 yeah I'm am more of a vacuum tube kind of guy
i killed 3 power supplies costing $100 each and about 40 mosfets in total
Wtf?! y’all murderers how dare you
Bruh I got my coil working after 1 mosfet
Is it possible to order this Tesla coil from you, and if so, for what price.
Even if I were to make a custom built Tesla coil for you, the shipping price would probably be insanely high
@@ethanslab7670 Damn, it's sad, but if you can, please send a link to the diagram. If there are offensive words, I apologize, I translate with the help of Google translator.
@@Kostya_bro i have most my schematics on my community posts page for now but if you know a way i could create links for them, that would be helpful.
@@ethanslab7670 you can upload the scheme to any site where you can upload pictures and then click the copy link button and paste the link in the description under the video
@@Kostya_bro i’ll move my schematics to a google drive and place the link in the video description soon.
That's nice, its weird how a single FET is more beefier than a Half bridge, btw I'm wondering how you are interrupting it, I had some experiences with this circuit, back in November 2020 I've made it work at mains voltage with scrap FET and a 2MHz coil, now I'm trying to make it work with a 700kHz coil and it doesn't even want to work at 24v, interestingly I've made it work with a fat coil, the thing is that I saw you said your rectifier didn't wanted the HF of the ZVS which is quite weird I've used a monolithic rectifier, normally found on power supplies like PC, I was running like 50v 10A trough the slayer exciter (this was done in July 2022 with the Fat coil) it flashedover later, I was using a RC snubber and a 250 FET but i was able to make it run CW with the ZVS and normal rectifier, the rectifier got hot but no smoking or something like that, I will redo the small coil and hopefully it will work, how are you interrupting yours?
That's interesting, my Tesla coil is casted in hot glue so it can insulate against the terrifying voltages because I found out the hard way that internal arcing happens when running the coil over 50v. The interesting part of my design is that it uses 2 MOSFETs, one for driving the primary coil and one for interrupting the power to the other mosfet using a single ne555 chip feeding a variable duty cycle and frequency.
@@ethanslab7670 interesting, mine when powered by the ZVS supply in continuous wave got fried, it bypassed the PVC insulation, other thing i forgot to mention is that when powered by the ZVS the electromagnetic field got more stronger than if it was powered from some Series power supply, the electromagnetic field was able to induce voltage in all metals nearby and light fluorescents from like a meter, this was with a 75mm diameter and 160mm Height 36AWG coil, after it got fried I didn't had any money for new PVC so I got a 38AWG for free and a 33mm diameter by 120mm height PVC form which is like 700kHz with topload and primary coil
@@ethanslab7670 i have a spare 460
@@ElIsraelJijijiji 460s are really expensive and I didn't get the chance to test them in my Tesla coil so I don't know how much power they can handle
@@ethanslab7670 they can handle 250w power but this is nothing for a MOT ballast
The primary currents on that thing must be insane. I've been working on some true low voltage SSTCs, and I found that the more current you can pump into the primary, the bigger the arcs are. Those arcs are huge! The two IRFP250s in parallel makes sense since on resistance would only be about 42.5m ohm. I'm using IRFP460s in a half bridge (still getting impressive arcs at 31V though), which is not the best because of their high on resistance. Maybe you could use a whole bunch of those in parallel for less chance of mosfet death (but you could run into turn on time problems) or use a TVS diode or gas plasma arrestor to save your mosfets.
I used 1 IRFP250N to switch the primary coil and 1 to interrupt the signal. I found that pulling the gate voltage down with an inverted signal won't work because the emf generated from the Tesla coil disrupts the interrupter signal. For my half bridge Tesla coils I use a 440v TVS diode and I tried using neon bulbs for IRFP250N mosfets and it makes the mosfet last a lot longer but it eventually does die anyways.
Check out the stuff I posted about my 24v push pull SSTC that creates relatively large arcs. hopefully I can tune the Tesla coil and improve the circuit to make larger arcs.
Also with push pull Tesla coils, the back emf is very angry and destroys snubber capacitors and resistors quickly
@Ethan’s Lab maybe a resonant mosfet slayer could save your mosfets. I've never built one, though. My low voltage (12-20v) mosfet slayer doesn't produce enough back emf to light up a neon bulb, which is interesting but also good. My experience with my low voltage half bridge is that there are almost no voltage spikes (maybe it's because of the "snubber" capacitors that I have). I'm thinking of building a push pull sstc with resonant capacitors that hopefully will make ZVS happen, but otherwise they'll just absorb the back emf.
sir i need one more little help from you
animated circuit diagram
Whether to put secondary wire in earth ground?
S1 and R2 R3 I didn't understand this too
R2 and R3 is a voltage divider, i recommend you use a potentiometer to replace it. The secondary coil doesnt go to ground but rather into the upper mosfet gate.
Very cool!
Hi, I just came across the video, it's very nice, and the coil is great, can you share the schematic of how it's made
I will make the schematic when I finish recording the next video about making firecrackers
Have you tried protect transistor with external zener-diode rated as same voltage as the transistor? I gonna try it in my next tesla coil play sometime.
i didnt have any 200v diodes for my irfp250s but i used 440v diodes for my irfp460s and they died anyways. I found that the only way to save the transistors is to use a lower input voltage to begin with and using a push pull driver with snubbers, that way the transistors have never died on me.
@@ethanslab7670 I meant specially zener, not ordinary rectifier-diodes to be used as "free rolling". en.m.wikipedia.org/wiki/Zener_diode
@@mpakarinen i used DC TVS protection diodes
@@ethanslab7670 Dc tvs diodes may not be designed for continuous repeating surges so zener-diode may be better option.
@@mpakarinen I can't find any zener diodes with the correct voltage rating. I think gas discharge tubes might work so I'll try it soon.
I have a different design . A meissner oscillator. And that circuit is not a mosfet hazard . It uses the primairy coil as feedback . It is basicly a double slayer exiter whitout earth in the low voltage circuits. Earth can now directly be connected to the secondary coil . This circuit creates a alternating current in the primairy coil . And the nice thing about this circuit is that it also can function whitout earth. It works better whit earth but whitout earth de signal is not so killing for my mobile phone 😂
That Tesla coil circuit doesn't have secondary feedback so the resonant frequency will change too much and the arcs will vary. Also the circuit doesn't support the same voltage as the Slayer exciter I made.
@@ethanslab7670 well , to make the circuit oscilate . In the Slayer exiter , you have the secondary coil as feedback to switch the transistor. Whit a meissner oscillator , you have the primary coil and feedback capacitors to make the oscillator switch on and of . I have the design on my channel , and sorry English its not perfect.
@@Smellslikenarcspirit that's a flaw with the circuit because it generates excessive heat and makes small output
@@ethanslab7670 it isn,t , now i must say that i use bipolar junction transistors instead of mosfet . But heat is not that much . In my video you can see that i use 1 cool element whitout a cooling fan .
@@ethanslab7670 and the frequency is a stable 650 khz . Using the 10 turn primary coil and a 4,7 nf tank capacitor. BUT as i said in my video i hope that someone tries this circuit and share the experience.
Please show the circuit diagram
Hello. I'm very impressed with the tesla coil you made, it's really put in the effort. I couldn't find his Discord. Because within 1 year, he started using a username on discord. I was enthusiastic about this tesla coil. Can you give me a snapshot. Or the new discord. I need help with a Tesla coil.
Wish you made 1 video... How to make that sstc step by step... On RUclips nobody showing 😢😢
Schaltplan währe gut.😎
that is super cool of course you can do better quality video potato quality :D but its also super cool i give you sub
how make it
Where is the circuit diagram sir?
the circuit is very simple, many diagrams can be found by searching “slayer exciter”
check my community posts page, the schematic is there.
Hello everybody please share tasla coil circuit diagram help
Can you please give us diagram details
can you give me your circuit diagram
photos.app.goo.gl/DRnP75CA6x31hYMQA
Secondary coil leads into upper mosfet gate, the schematic had a mistake.
@@ethanslab7670 ☺️ Oh forgot to say thank you bro who told me the circuit this I have billed tesla coil this is great
Можно пожалуйста схему. Pls diagram
Can you send me somehow schematic i want to make my own
i posted the schematic on my community posts page.