Revolutionary Invention: IGBT-Based Induction Heater - No Mosfet, No Diodes, No Resistance, No Coil!

[@Zerofoxthree]

this is the most simple ZVS oscilator i've ever seen, it works but it seems that the standby curent is high, perhaps you can create another version with lower standby current, it will be awesome

[@ttooddoorrev1674]

Благодарим ви!

[@mmikrik]

В конце видео один транзистор сгорел. Ток был 2.7 ампер, потом подскочил до 9 ампер. Полевые и IGBT транзисторы имеют ограничения по напряжению на затворах. Не более 20 вольт.

[@MsAndru79]

стабилитроны в затворы не ставил и транзюки на радиаторах

[@ZAFERYILDIZ52]

Причина горения в том, что провод катушки был намотан слишком тонко и нагрузка находилась на одной стороне.

[@mmikrik]

@@MsAndru79 зачем так, контента не будет. Народу нравится мощщ..гром и молнии)

[@mmikrik]

@@ZAFERYILDIZ52 нет, как раз причина в сгоревшем транзисторе. он сгорел в тот момент когда ток подскочил очень резко! смотри внимательнее

[@donramonramirez5141]

La tensión de puerta del IGBT, no debe superar los 12 Vcc, en el peor de los casos ... Y encima, puso a trabajar los IGBT SIN RADIADOR, sin el soporte correcto, en alta frecuencia y potencia ... No podía pasar otra cosa que TERMINAR ROTO ... Un trabajo de mierda ... 🤦🤦🤦

[@TheElectronicDilettante]

You do some of the best builds of skeleton circuits on the planet, literally. Well done!! Truly interesting circuit with no diodes, resistors or inductors (other than all the copper). I look forward to your next video!! Thanks!

[@ZAFERYILDIZ52]

Many channels will use this design closely :) Thank you for your comments and support.

[@m.hasanyavari.s4083]

دمت گرم❤

[@alimahmoodi8322]

سلام ، مدار های الکترونیکی که شما ارائه می‌دهید، هم خلاقانه است ،هم ساده و قابل فهم و هم کاربردی است .احسنت به این خلاقیت شما .متشکر .❤❤❤

[@BayuRahmanan]

​​@@ZAFERYILDIZ52Can this concept also be applied to the induction door lock method? Thanks

[@lrfanali848]

No hitsink

[@milanpetrik7419]

Amazing power of resonance: the same place of circuit turns red both thick copper wire requiring dozens of amperes to glow, both thin tungsten wire, requiring dozens of volts to glow.

[@Fred_Klingon]

I think the coil becomes hot at the end due to the current, not resonance. The lamp, I don't know to be honest.. even if it's for AC it should absorb some current at low voltages 🧐

[@jeanbolus]

J'ai essayé le montage, ça fonctionne bien, pas oublier des refroidisseurs sur les transistors, bravo !

[@SmokeyWire56]

I like this very much. I was going to bu one, but i had the parts to build. Only experimented with it for 2 hours. I tried 0.40uf to 1uf but little change in performance. I parallel IGBT's for use of 4, again little difference. Next i will try different coils but circuit seems tuned well as is. Used 13 volt motorcycle Lithium battery.

[@davypeleman3672]

Please be safe the current draw is alot. This circuit has no choke too so it will take as much as it can get from the power supply. I suggest you use an old laptop charger or make/ buy a dedicated power supply. The charger only get around 100 watts of power so for more use a big power supply or use a lead acid battery for a car. The power you saw in this video can be done with 100 watts. To melt the metal you will need more power. 1000 watts would be a good start. Just make anothe circuit. This is not reliable and safe!

[@RAM84655]

سيد ظافر شكرا لك هل يمكن صنع نفس التصميم بقدرة اعلى باستخدام igbt كبير جدا

[@mistawan1]

Finally I got new knowledge from this video

[@dalenassar9152]

GREAT VIDEO!!! On a standard induction heater, the peak output is about three times as much as the input, however, on the IGBT induction heater it is about three times LESS. Is this correct?? THANKS MUCH!!!

[@AbhayKumarPaswan-dn1pf]

*Can* we use this for driving Flyback Transformers?

[@MatthewSuffidy]

All that stuff is basically a DC to AC converter that I assume has a pretty high frequency? That frequency would come from the value of the capacitor?

[@mehanik_ru1013]

Спасибо Вам за ваши видео! Очень интересно и приятно смотреть ваши разработки.

[@ZAFERYILDIZ52]

Благодарю вас от всего сердца за поддержку и искренний комментарий.

[@saicm432]

The circuit looks like a transistor based multivibrator. The IGBT needs to be on heat sinks since circuit current is nearly 6.8 Amps. Heating a blade is only for demonstration. If one wants to heat bigger objects the circuit should be scaled up with a good power supply , cooling fan etc. Good work.

[@МихаилМакаров-щ7щ]

Частота 182 кГц не слишком высокая для индукционного нагревателя?

[@zootehnik6662]

Чем выше частота, тем быстрее нагрев и меньше потребление соответственно из за поверхтностного эффекта. Но защиту управляющего электрода транзистора от перенапряжения я бы предусмотрел как это делают в типовых схемах.

[@МихаилМакаров-щ7щ]

@@zootehnik6662 спасибо за ответ. Но получается, что деталь, особенно массивная, будет на очень высокой частоте прогреваться только в поверхностном слое? А дальше ( в глубь) будет греться только за счёт теплопроводности?

[@zootehnik6662]

@@МихаилМакаров-щ7щ Это не такая большая частота, что бы токи были только на поверхности. Для цементации детали это хорошо чем выше частота, она не будет хрупкой. В любом случае это ускорит полное програевание детали так как теплопроводность металов высокая. К примеру то что не нагревается совсем на частоте 10мгц, не выдерживает температуры на 30 мгц при той же мощности из моего опыта

[@МихаилМакаров-щ7щ]

@@zootehnik6662 благодарю. Думал там частоты килогерц 20-30. Не знал, что мегагерцы даже используют. Считал, что на таких частотах на излучение будет тратиться энергия.

[@zootehnik6662]

@@МихаилМакаров-щ7щ Извините если ввел вас в заблуждение. Я привел пример из области радиотехники для наглядности. Для индукционного нагрева обычно используют токи разных частот - промышленной (50  Гц), повышенной (150 и 250  Гц), средней (от 0,5 до 10  кГц), высокой (67 и 440  кГц), сверхвысокой (1,76 и 5,28  МГц). Ограничение по частотам из за дороговизны и отсутствия электронных силовых приборов на такие мощности. Потому так называемые сверхвысокие частоты используют для относительно небольших по обьему деталей. Более детальную информацию вы найдете погуглив. Успехов...

[@cafeinstrumentmusics]

hi, if I make a dc power supply directly taken from the 220vac power outlet (using a bridge diode and a capacitor and supposed to become about 300vdc), what needs to be modified? the numbers of the copper wires turning? and what else? please advise me, thanks.

[@antd8667]

Any one no of a good temperature control for that circuit

[@KevCornucopia]

I love watching your videos. I was particularly intrigued to see how you would create an induction heater without a coil... until 2:44 when you started to wind a coil!! 😂😂

[@ZAFERYILDIZ52]

the aforementioned babon indicator

[@davypeleman3672]

He meant the choke i guess. Anyway there's a good reason why the intelligent inventor of this circuit uses zeners, resistors and choke. but i guess safety and sense have also become obsolete in this new era of making video's on proven topics and trying to be a wise guy.

[@gibbogle]

@@ZAFERYILDIZ52 What is a babon?

[@Dinco422]

I guess he meant the inductor ?

[@allenrusselljr]

Would this build work to heat a bolt (stuck) that fits inside the coil ? Ive been looking for one of the tools but the costs are too much for me (not a mechanic). I watched another video where they used an old twisty style light bulb and built one.

[@hooseinz]

Dose it work well with 220 volt DC? Thank you

[@davypeleman3672]

😂😂i dare you to try without the zeners and resistors. If you want to see igbt's exploding i guess it will be alright. And you better not use the resistor values you find in ordinary zvs schematics. They are meant to be used between 12 and 48 volts dc. You can do it on 220 but then you need to calculate the resistors for the gates. And use an apropriate choke. Anyway more volts are not needed. The current is the most important thing not the voltage.

[@hooseinz]

@@davypeleman3672 thank you 😊😁

[@davypeleman3672]

@@hooseinz Also the voltage you use is on the warming coil so 220 would be a rather bad idea. You should use an isolation transformer at least to not run the risk of shocks if you where to touch the warming coil it would not be good if not isolated from mains. Be safe! If you play with these voltages use an isolation transformer. A variac will not isolate the circuit from mains.

[@hooseinz]

@@davypeleman3672 yes of course, thank you 😊😁👏

[@hooseinz]

@@davypeleman3672 were are you from?

[@EyupSan-qn4vc]

Bunun biraz büyüğünü yapsak evi ısıtırmı fatura çok gelirmi

[@zaimmert255]

Kkolay gelsin zafer bey, verdiğiniz bilgilerden faydalanıyoruz teşekürler.

[@akhtarnadeem621]

Does Any inductor has a very high voltage or current across the copper coil,is it dangerous??

[@alienmidknight368]

Can it melt / repair a cracked windshield, by putting a pointed, rod sticking out of the coil?

[@webtaiying]

코일을 작게 해도 무방한가요? 그림에서처럼의 1/2만큼 으로하면?

[@cryptofaucet2595]

Can I use 1uf capasitor?

[@delimanyak315]

Abi masAllahın var bu ülkeye senin gibi sanatkâr insanlar lazım

[@0bit030]

хороший пример того для чего используются наборы пластин в трансформаторе, чтобы не пораждать токи фуко и не нагревать сердечник)))

[@TheElectronicDilettante]

Would this configuration work with an igbt like a Mitsubishi qm100dy-h igbt (or equivalent)module? 600v 100a would make for quite an inductive heater.

[@RAM84655]

هل تعمل جيدا برأيك

[@clytle374]

Wow, flux used on a video like this. Congratulations! Would love to know how hot the transistors are running. I know the coil is crazy hot as that is normal and limits the duty cycle of induction heaters if you don't use tubing with cooling liquid.

[@abomahammadali8443]

شكرا لك استاذنا المحترم

[@TheElectronicDilettante]

So I’ve read a lot of the skeptical comments on this build so I thought I’d give it a try. I found the igbts, caps and got it built.The circuit functions exactly as shown in the video and circuit diagram and it 100% works as advertised. Really, very cool. Thanks again for this build!!

[@joeteejoetee]

Nice Video and excellent wire forming skills! Every time I see people useing "Lead-Free" solder, I feel sorry for them having to use it instead of 60/40 or 63/37 eutectic solders.

[@electrocat9]

How do you know it is lead free?

[@joeteejoetee]

Because I did not want to say that the solder connections are/look awful, I blamed that on lead free solder instead of soldering skill. I have been Soldering for over 50 years, and I have used ROHS Solders before, and they are no where near is good as traditional solders still are. You should try it sometime! @@electrocat9

[@jeremiahbullfrog9288]

60/40 isn't eutectic. Stick with the 63/37

[@szekerespista3758]

Can you make it half wave ?

[@faicalabdi76]

Toujours génial, merci❤❤❤

[@onestoptechnologies7305]

Can you increase the voltage to 36-48VDC to maximize the wattage?

[@davypeleman3672]

No because you will destroy the gate of your igbt's wich will be rated for 10- 20volts. For that you need the zeners and resistors. Maybe there are igbt's with higher gate voltage but most will have that threshold. Just build a normal zvs driver. This circuit is not usable. A good zvs driver is more efficient than this piece of junk. This is just an experiment to show it is possible, but it's not a good idea imho.

[@onestoptechnologies7305]

@@davypeleman3672 OK, Thanks! Yeah, I think they're rated at about 20V. Any idea of the oscillating frequency of a typical ZVS driver? High freq seems to be the key here. Do you have any suggestions of things I should look for when searching for a good ZVS circuit? Or am I better off just buying a prebuilt driver for +-1KW? I want to build a something I can change coil sizes on and power with invertor or batteries. Thanks

[@davypeleman3672]

@@onestoptechnologies7305 Search for ZVS driver schematic also known as the flyback driver. Steve Ward or Telaundmehr have a nice webpage where you can find it too. This is the best circuit imho. It uses more components but is very reliable and the mosfets will not heat alot. ZeroVoltageCrossing means the mosfets turn off at 0volts. So they don't have to block the current. And so they don't heat alot. This is what makes this circuit efficient and is not hard on the mosfets. I have build many and some are old. They all still work never blown a mosfet with them. The frequency will depend on your heating coil and capacitor combo. They will form an RC circuit. But the frequency is not critical in this application so you can experiment with that. It should however not be too slow. Keep the capacitor below 1uf and you should be good. The longer the coil the slower the frequency. And use the right capacitor it needs to be a film capacitor. Don't use a polarized cap like an electrolityc that would not be good. It will blow up 😅😅. If you want 1kw you will need a good power supply. at 24v that would mean +- 40 amps. Or use 48 volts at 20 amps. That would be 960 watts to be precize.

[@rifattarkyararbas4058]

İndüksiyon bobininin sarım çapını büyütebilir miyiz?

[@b4dmblm705]

I'm glad you are asking cause I was wondering the same thing.

[@ZAFERYILDIZ52]

evet cm kadar çıkabilirsiniz ancak sonuç için giriş gerilimi 30 volt olmalı ve sogutucu ekleyin

[@user-cncfrezer]

А можно рассчитать схему для мощных IGBT-сборок от драйвера сервопривода? С питанием 45-50 вольт? Как это сделать? Если можно подскажите пожалуйста. Я в экспериментах не силён. 😅

[@DrHarryT]

Typically tank circuits will fry the transistors if you slowly bring the power up. [They won't start oscillating] They require instant voltage application to it ???

[@mehmetyoyen103]

Nüve ile yönlendirme yapilabilrmi ?

[@شعبانالبطل-ط4ت]

‏‪3:42‬‏ رائع برافوا عليك ❤❤❤❤❤❤❤❤❤

[@cihangirsur1382]

Merhaba, + uç neden bobinin ortasından veriliyor? Başka bir yöntemi yok mu?

[@RAM84655]

ماهي اقوى دائرة يمكننا صنعها لصهر المعادن

[@mouldykev]

Very nice job 👍 can you make this work without the centre tap coil ?

[@AngeloAlapar-yl4ev]

Ive always waiting for new video definitely im new at electronics but i am a ac tech when im out of work i xopy all your piece more power from Philippines here I copy some of ur piece and im keep improving my skil...

[@ZAFERYILDIZ52]

love to the philippines

[@nazriwaniwan1482]

Bagaimana rara buat input 220 volt om?

[@dixienormus2101]

Why did the coil start glowing as well?

[@stevelloyd5785]

How long do you think those IGBTs are going to last with no heat sink?

[@davypeleman3672]

In a good zvs driver there's not much heat produce on the mosfets since they swith at 0 volts. My zvs could run without, but it is always a good idea to use a heatsink in such power application. Anyway i use small heatsinks and they stay cool. Then you know it's working as it should. This circuit is just not usable, a good experiment to show it can be done, nothing more.

[@mariocatena7220]

40N60UFD is an IGBT or a MOSFET? Looking over datasheet looks like a MOSFET and not an IGBT.

[@wx9635]

40n60 has both mosfet and igbt .. datasheet.octopart.com/FGH40N60SFDTU-ON-Semiconductor-datasheet-95276769.pdf?_gl=1*19e819s*_ga*MjkyODk2MTY0LjE3MTA0ODE2MTc.*_ga_SNYD338KXX*MTcxMDQ4MTYxNy4xLjEuMTcxMDQ4MTgzMS4wLjAuMA..

[@ImranKhan-ir7tr]

please add a variable to adjust power of induction

[@seanstraw8688]

Surely it isn't desirable to to have the col burning red hot, such as it does while you're running the lamp from 30V ?

[@webtaiying]

고주파가 코일에 임피던스를 증가시켜서 코일이 붉게 되나요?

[@antd8667]

Where do I get a schematic

[@erdalsahin6327]

Zafer hocam datasheete baktım bundan inverter yapabilirmiyiz? Pc 300W diyor bize yeter ufak bir şeyler çalıştırmak için. Yalnız bir sorum var trafo kullan madan yapabilir miyiz?

[@cat-wo]

I don't find 0,27 uF ... Can I replace it with more uF or less? Thank you

[@SmokeyWire56]

I tried 0,40-0,80 uf and that worked about the same.

[@pastime607]

I have subscribed to your channel. Tell me how much temperature can I gain with this heater so that I can melt some metals that can melt only at high temperatures. Thank you very much.

[@ThongHuynhphuoc]

Thật hay và tuyệt vời. Chúc mừng Bạn. Tôi nghĩ có thể thay dây đồng bằng ống đồng phi 3mm cho nước tuần hoàn được không?

[@idrisesit2275]

Eline saglik ustam bir de bunu kaynak makinasi ile yapabilir misin

[@Hstakken]

Tried it but could not get it to work, not sure what the issue is and never going to find out. Hope it works for someone else.

[@w4bbitseezin]

would this heat denser metals is the question

[@MR-ub6sq]

I really don't understand what is going on in the brain of the creator of this video. Video title : "Revolutionary Invention: IGBT-Based Induction Heater - No Mosfet, No Diodes, No Resistance, No Coil!" You can already see from the thumbnail image that it has at least a coil, as in the video at 3:08. And from the video at 1:58 you can tell that it includes two G40N60UFD mosfets...

[@DreadPirarateAndersen]

thank you for saving me the time to ask exact same question!..

[@MR-ub6sq]

@@DreadPirarateAndersen We'll see how many weeks it takes to get an answer.

[@DreadPirarateAndersen]

@@MR-ub6sq didn't actually expect one, so would be surprised if he more than just likes it, but who knows...

[@Shuravi532]

Как понять название , без транзисторов ?

[@alvaroperez961]

Can you modify this circuit to use a flat coil please?

[@ZAFERYILDIZ52]

It's not a flat coil, bro, but you can wrap it on a core.

[@hlw-Tuhin]

Is it possible to make induction heater using bjt?

[@davypeleman3672]

Not really. The zvs circuit counts on one mosfet turning on faster then the other. This is due to the fact they use capacitors on the gate that need to charge. When charged they open the drain. A BJT does not use capacitors so they will turn on simultaneously so there will be no switching and they will stay open and burn.

[@ashraf9472]

مشاء الله عليك مهندسنا العزيز بارك الله فيك تحية طيبة

[@srrincekara9499]

🤲🤲🤲

[@ZAFERYILDIZ52]

شكرا على التعليق الرائع والدعم آمين

[@johnpages4627]

JE M'EXPRIME est ce que ont peut chauffait une maison ou un appartement avec ce système là et ou trouvait les composants électroniques en vous remerciant !

[@ZAFERYILDIZ52]

Pour votre appartement, c'est petit mais peut chauffer un radiateur, consultez Aliexpres.

[@johnpages4627]

@@ZAFERYILDIZ52 je vous remercie !

[@paruguh3907]

Saya ingin tau kumparan yang lebih banyak utk menyalakan lampu 220v atau pake kumparan sekunder yang dimasukan ke dalam kumparan primer induksi tanpa ferit

[@paruguh3907]

Tes tegangan pake dioda cepat diantara kumparan

[@ZAFERYILDIZ52]

👌

[@batticha462]

7:42 Not only the lamp lit up, the coil too 🙂

[@david.aloqidee97]

Merhaba Dhafer kardeşim. Bu yöntem IGBT'yi aşırı ısıtmıyor mu? Çabuk yanıyor mu, yanmıyor mu? Lütfen cevap verin. Teşekkür ederim.

[@ZAFERYILDIZ52]

IGBT mosfetten daha dayanıklıdır ve farkındaysanız sogutucu koymadım ama uzun süre kullanım için sogutucu ekleyin tabiki

[@Freq.]

А каково практическое применение?

[@alperkaanaltnkaya5040]

Mosfetli versiyonlardaki gibi şok bobini taksak iki çıkışlı olarak çalışır mı?

[@ZAFERYILDIZ52]

Çalışır

[@kimsoundmusic]

How long can the coil remain engaged without damaging any components? I know nothing about induction heating but am curious how a design like this will last if engaged up to 24 hours straight. I need to keep a raised bed of soil from freezing and thought this might be a low cost solution. Or maybe a similar design with more robust components? I just need to know if some part of the design will be prone to failure if used for long periods of time. Thank you for your time

[@АзатХакимов-ь3э]

You dont looked how is warms on 14,18,20 V ... please look it

[@АнатолийНауменко-л9о]

Единственное несовпадение, которое я не могу объяснить, это когда осциллоскоп показывает без нагрузки 100 кГц, а под нагрузкой 180 кГц. При этом синусоида расширяется. хотя частота увеличивается.

[@muraterdal7921]

PEKİ HOCAM bu ebatlarda isitici max kaç mm kaınlıkları ısıtabilir ? mesela bi 5 mm ısıtabilirmi bıcak yapımında kullanmak için işe yararmı

[@ZAFERYILDIZ52]

IGBT sogutucu ekleyin ve 24v 10 amperle besleyin 10 mm dahi ısıtmaya yeter bu arada bobin telini daha kalın sarın 2,5 mm telden

[@1dayinthefuture101]

Herhangibir ıgbt olurmu sizin kullandığınızı bulamadım intetnette

[@1964.0]

Сечения провода катушки? Заранее благодарен

[@marsl9664]

На вскидку 2 квадрата где то, может полтора.

[@zaimmert255]

Daha güçlü indüksiyon için bir bilgi alabilirmiyiz.

[@GedeAsmara-pm7gf]

Bikin yg bisa di jual di pasaran mas ?

[@zaferakhan5359]

Usta bunu biraz daha güçlü yapmak istersek voltajı arttirsak yeterli olur mu

[@ZAFERYILDIZ52]

daha güçlü IGBT kullanmak daha iyi olacaktır

[@35meco]

Üstad neden hiç 220 volt indüksiyon devresi yapılmıyor?

[@ZAFERYILDIZ52]

o voltajda bu kadar basit olmayacaktır. ve daha pahalı olacaktır

[@rajendranparakkal7335]

സൂപ്പർ ആയിട്ടുണ്ട്. നന്ദി സാർ❤

[@ZAFERYILDIZ52]

നിങ്ങളുടെ അഭിപ്രായത്തിനും പിന്തുണയ്ക്കും നന്ദി.

[@muthubaby8715]

HDD slow thaan but data recovery ku best ahh irukkum ji SSD damage aakiduchu apdinaa data recovery rombave kastam illa pannave mudiyaamalum pogalaam ji

[@fabioregis7119]

Top demais parabéns 👏👏👏👏

[@ناصرالدويك]

مهو بيعوض دا في سحب امبير عالي

[@antd8667]

How do I make one for 2000 watts

[@davypeleman3672]

Use the classic zvs schematic this is just an experiment to show it can work.

[@PrabhakarSharma-qg4ov]

Very nice information Great work for you Sir ji 🎉 bahut bahut shukriya Bhai Ji

[@ZAFERYILDIZ52]

Thank you for your comment and support.

[@1964.0]

​@@ZAFERYILDIZ52какое сечение провода катушки? Заранее спасибо!

[@1964.0]

Гениально👍☝️

[@진맨진]

It's possible for testing purposes, but definitely need a heatsink for IGBT .

[@davypeleman3672]

In a good zvs driver the mosfets don't heat much. This circuit is not good. Since the zvs switches the mosfets at 0volts the mosfet never needs to block a huge voltage and current and will not heat. Also mosfets are better with higher frequencies. This is a nice experiment, but not usable imo.

[@chandrasusanto4766]

Saya mempunyai sebuah travo las listrik lakoni falcon 120e 900watt yang rusak di bagian kendali Saya ingin membuat nya seperti ini dengan kapasitas yang lebih besar ??? 🙏🙏🙏

[@ZAFERYILDIZ52]

👌

[@chandrasusanto4766]

@@ZAFERYILDIZ52 Bisakah ???? 🙏😇

[@antd8667]

For a 72 watt heater use for few seconds at a time that will work like that

[@barokahlampuchanel4102]

Good 👍👍👍🙏

[@aniketkadam1608]

As you give current to coil but the their magnetic field should be create but this not happen in this video their heat generat why ?????

[@hyndaiatos9441]

Svaka vam čast gospodine, sve ste rekli .lp

[@mmtt4644]

Здраствуте автор. Сможете сделать высоковольтный генератор на 50-100 киловольт для очистки дыма. Если покажете простую понятную схему я был бы очень рад и спасибо за такие ролики. Привет из Жетысая.

[@jdidimbarek1481]

Good work I wish you all the best Can you make with

[@Keepitreal260]

I don’t understand the lightbulb. You get current drawn when you have resistance. Like a light bulb for instance. Powering the light bulb would be more useful with the minleaf variable power supply. Otherwise I was able to follow along to your build on a different take of induction coil heater. 😅

[@CKidder80]

The video description seems kind of disingenuous to me. No mosfet. So, you used something that essentially works exactly like a mosfet. No diodes, except that transistors do have a diode effect. No resistance, except that everything has resistance - the wires, the IGBTs, the caps, the coil. No coil, except that you are using the output coil for a dual purpose. So, essentially all of the no's are either irrelevant or wrong. What am I missing?

[@You-ov2zh]

Title: no mosfet **mosfets**

[@You-ov2zh]

WHAT THE?! NO NOTHING?!?!!

[@zehavazargari6730]

VEREY NICE.THANK YOU

[@mikropower01]

7:27- The copper coil starts glowing, this is the reason why the copper tube should be water cooled.