Just had to take the time to say how much I love your videos. It took a little time to get used to - but you are now firmly in my absolute favourite list. (which is a small precious list). A great mix of humor and knowledge delivered with a unique style.
@@BillAnt i took it the wrong way. have a nice day. The guy knows his stuff and everything about his videos is great including his cat and his accent when speaking English!!!!! LOL..
Man oh man! Nothing better than a temporary solution that turns permanent. 😁👍 I wish I could find a way to easily ship things to you from the usa. There have been dozens of times over the past few years where I wanted to ship you something after one of your videos. A buddy of mine runs a local industrial scrap yard and he gets welders and stuff by the truck load. You wouldn't believe the government entities and big companies who just scrap everything after one big job is finished because it's cheaper to write it off on their taxes. Literally stuff that is less than a year old. It makes more financial sense for them to crush it all at the scrapyard then to try and sell it or whatever. They Don't really allow the public to come in and buy stuff but I go by there a few days a week and he lets me have whatever for about $0.08 per pound no matter what it is. I used to be thousands of pounds of stuff every month sometimes thousands of pounds per week. And it went on like that for the first 2 or 3 years. But it's been 6-7 years now... And you just can't do that constantly you just can't keep up with that pace. It's more than a full-time job and then you end up realizing you don't get to work on projects because it's a full-time job keeping up with all of that stuff He doesn't keep anything anymore he just crushes at all unless I want it. a lot of the government stuff it comes in has to be crushed because it's a mandatory things since it was bought with taxpayer money. But I still get whatever I want and a lot of times donate it to schools and stuff like that when I find someone looking for something, or really need it, or I have the time. But it's a full-time job and I just don't have the time. You can only use so many things. And you can only have so many storage buildings. Then....If you can't find something when you need it or easily get to it.....then you might as well not have it at all.
That's easily fixable, just solder in a 1mF smoothing-cap taken from some computer power supply.... another smoothing cap from some computer power supply.... another smoothing cap from some computer power supply.... and another smoothing cap from some computer power supply.... ha-ha-ha
When you said there’s no motivation to finish it when it works and a temporary solution turns permanent… Story of my life. Happens with 99% of my projects lol
For some very strange unexplainable reason, you can listen to this guy all day. like a damn twilight zone of hypnotic sound. DiodeGoneWild my foot. this guy is crazy smart gone berzerk. knows his stuff....
ok... ok... your suppressor broken and then you build a welder, and a welding mask to fix it! Big respect! Thanks DiodeGoneWild for very detail explaination!
Nothing new to me, since I've went over your site left and right MANY times :) Just nice to see the old beast in action. I have to calm down a bit, 'cause I tend to get paranoid when I build some high frequency high power circuits, you literally cobbled it together and it works juuuust fine :D
I would imagine even with your deep understanding in electronics, it would have been created in blocks. Making each block perform as expected, then matching it to the next block. It's still very impressive, even ten years later :-D Hope you fixed the exhaust, exhausting work :) The sub 17v supply looks like it has a "Top" chip or similar, it's amazing how minimal the circuit can become :-). I have been to your site quite a few times, you did build a power supply that was massive, or perhaps it was a welder, my memory is bad. Some of the small supplys i have saved the diagrams, just for personal use only. The section on p.c switchmode diagrams is very handy for reference.
Man, you have gone crazy big time 😂😁 You EVEN BUILT A SWITCHING auxiliary ps haha.. I am sure that out of 1000 people, 999 would have just dropped in a low dropout linear regulator IC but not you 👍👍😊 ps: pls show the bead you have done on the exhaust pipe haha
Most people don't know that car exhausts corrode from the inside out. That is to say that the metal actually becomes effectively thinner and weaker, hence it breaks. trying to weld them back up is only likely to last for a short time ( I have done it too). You will find the metal is effectively perforated, and the weld "pool" just runs away getting larger. and not where you intend it to be. You'll make more new holes than you started with and you may end up junking the pipe instead of fixing it. But good luck in any case.
You have real sick frankenstein engineering skill. Waching you touching contacts with bare hand also makes me nervous though I'm sure you're aware with the dangers but it just doesn't seems as safe..
There was a time when people were responsible for their own actions! Not today where the lawyers and insurance companies are slowly making most equipment unserviceable due to crazy safety requirements. Some of the old tube radios I work on have exposed mains on the back some even have a scary accessory plug with B+ 300-600 volts dc typically in a plug that has zero recess on the terminals! If you don’t know what your doing don’t do it, if you are learning ask someone that knows read, read some more and be prepared to get a shock or two that’s just how life goes when working on this stuff. But you must know the difference between something that will just make you mad and hurt vs something that one mistake will kill you instantly like the smoothing caps in a high powered transmitter or high voltage power lines.
maybe make some video to explain more in detail how it works (gate driving circuitry, the transformers, the type of ferrite, ecc), it would be interesting!
@@DiodeGoneWild yep you're right, but I don't understand why you've to used that gate circuitry instead of driving the mosfet directly from the insulation transformer
Hi, about that glass… don't worry about UV. Silicon oxide glass can't pass it; for lab uses when UV is necessary, lithium dioxide is used. So even a piece of window glass thick enough would suffice.
I've gotta hand it to you.... perseverance to sit and wind all the coils. You're proud of them I can tell, and so you should be. I was surprised to see an iron lamination transformer in the output. At 40khz switching, that would be inefficient due to eddy current and hysteresis losses. And it's very heavy. The choke at 40khz would be a similar problem with the bh curve characteristics of iron. The output transformer then looks more like something designed for 100hz, 1khz, 10khz maybe. Please cover the capacitor bank. The charge energy in there is significant and deadly. :) gm2020 . Edited: I saw on ur site, it's not iron laminated output transformer. The two big ferrite cores are impressive. :) Good answer given as to why DC rectification is used with inverter welders - yes the inductive reactance in leads at high frequencies! All around real nice, but a bit on the dangerous side :P
awesome! i read the article number of times years ago - it helped me to understand magic inside these electric machines. i can also recommend the switching PSUs topologies articles, good stuff there...(so far czech only)
You are awesome! How do you do the varnish coated wire for your transformers? I've managed to salvage some wire for rewinding once but most of the wire I've come across is not good enough for rewinding. The varnish tends to be brittle and crack after removing it. To answer everyones first question, yes, I very carefully remove the wire. I'm usually counting windings as it is and will carefully unwind and rewind at the same time or will wind it onto a fresh bobbin. The wire usually looks fine as soon as I remove it, but after letting it sit for a few days I can see small cracks showing tarnish from bare copper. Are you sourcing new copper wire, coating your own, or are there other sources of coated wire I should be looking for? -Jake
You'd have to ba crazy to coat the wire youself ;). I use an old coated wire from old devices. Deflection coils of old CRT televisions are a good source of a wire. Also sme transformers (not in resin). Some fluorescent ballasts. Some motors (for example microwave oven fans) have a nice coated wire, the winding is not in resin. Also some electromagnets and relay coils are a good source of wire. Also water pump motors from washing machines have a nice winding that you can easily unwind. Also the degaussing coils of CRT monitors or TVs (the big rectangle around the CRT, in a sticky tape).
Základ (což tohle je opravdu na kost :D) opravdu je, ale vyjma toho nejhoršího čínskýho šrotu má běžnej svářecí invertor pár serepetiček navíc, který pomáhaj startovat a držet oblouk + pár ochran aby se to neroztavilo ;-)
@@karelventil2647 vyrábět mělo smysl tak nejdřív před 10 lety. Dneska i čong dokáže vyrobit něco, co nevybouchne při 1. zapnutí a zvládne svařovat dýl jak 2 minuty, chce to jen pozorně zkontrolovat recenze před nakupovánim ;-) Co stále i dneska má smysl stavět, je indukční ohřev pro dílnu, jednotky kW výkon.
I would like to see you TRYING to weld a rusty tissue-thin exhaust pipe with any 'stick' welder. I remember the time my uncle bought a stick welder, the type that runs off a car battery. By the time he'd finished welding his old banger car, it had more holes in it than before he started!
I wonder if you could use an old very high watt (server power supply) switching...? Just hook some leads to the output. They're cheap but I don't know if they could take the abuse 😬
Nice build! I made one of those with only a transformer. I wound 750 turns of primary and 20 turns of very thick wire as the secondary. The only downside is that the secondary melts after long usage.
What is the output current? I only have old school welders. I would like to build something like this. My stick welder was considered old school 20+ years ago! I do have a wire welder. That's 120v it would be nice to build a switching supply welder from its parts. And be able to power it from 120/240v great video. I hope to see more on this welder. And similar projects!
DiodeGoneWild ha-ha yea that version doesent look like it will pass many safty standards! I don't think any of my projects would... What is the input power, current, how effiecent? With the return to caps?
Love you videos, been watching a lot of them and liking a lot of them lately. I believe this the first one I am commenting on. But I wish to see you redo this and on a nicer PCB layout (maybe professionally printed). Would really like to see this in that housing you drawn 😂
Thanks a lot. Is there a reason why the voltage isn't adjustable? You converted this welder into a power supply with adjustable current and voltage, but you use 3845 insted of the 3844 can I use the later one as I don't have the 3845?
I assembled this 2 switch forward schematic from you... I seem to have failed if your schematic is correct... I use an ee65 core using a 1.65mm copper wire as many as 21 turns the inductance reads around 4.5mH the frequency I play is 30khz to 50khz ... but unfortunately the 100 watt lamp / bulb that I series with the elko 470uf 400 volts is very bright and there is no sign the sign will work even though I let go of the light I'm sure it will make my IGBT explode in a matter of seconds... I am very sure that I have assembled it correctly exactly with the scheme you sent in the description of this video ... I've checked everything with my oscilloscope... I think the waves in the out gate drain of the second transformer are correct... please what solution should i change to make it work... thanks .....
THT components soldered as they were SMD, and the board is made using dremmel :). I should have patented this! Actually, it's made using a homemade "dremmel" made of a motor from an old VHS player.
You made a good job of that im impressed how much does it draw from the mains? Ive seen someone welding straight from mains no rectifier or current control yours is far superior
that might be possible in the US, where you can have silly things like 400A service, but here in EU, where the grid is mostly 230V (or 400V between phases), you'd have problems sourcing more then 32A out of commonly available 3-phase sockets.
Hi ...! Always igbts get short sircuit. Its only works well without load.. i tried 40n60 and irg4pc50f. Does internal diodes of igbts affects malfunction...
Coolest thing ever mate ! As I have seen many inverters as yours in the internet this led me to a question. Why it seems that every inverter has a primary current regulation ? Because for accuracy and tight regulation wouldn´t it be better to measure at the secondary side of the transformer ? Yeah I know that there is DC on the far right but I mean directly at the output of the secondary where still AC exist so you can use the current transformer there too.
this is a great project. thanks for sharing. why did you make it with DC output instead of AC? you already had 40 KHz. does that not work with welding? what is the Dc output voltage? is it around 9V like u said?
High frequency voltage isn't good for welding. At 40kHz and such a high current, just the inductance of the welding cables would be a big problem. And of course, most electrodes require DC.
Did I say anything about 9V? I think that the arc voltage may be like 12-15V at a very short arc or about 30-35V at a very long arc. Mostly like 20-25V.
@@DiodeGoneWild yeah actually i think i heard u saying something like 9 V. I looked at your weblink for this and saw that long arc is 3.6V and short arc is 1.2V based upon ur DVM. However i dont know how much current was passing at the time. so u say that short arc is 12-15V and average is about 25V... thanks. i often wondered about this.
@@DiodeGoneWild Ok Thanks. I also did not know that most welding required DC. and yes i did not think of it, 40KHz on the long welding cables will be a problem. thanks for pointing this out
I thought this cant get better, then I saw the welding mask :D
Just had to take the time to say how much I love your videos. It took a little time to get used to - but you are now firmly in my absolute favourite list. (which is a small precious list).
A great mix of humor and knowledge delivered with a unique style.
Same
Not dodgy. Handmade.
This is the kind of skill i'm looking for, not needing many specialized machines to make it work. Kudos from India
Mizoram ațangin ka lo reply ang che😁 a chanel hi a țha a nia.
Wow. Can't say I have seen anything that dodgy in a long time. Great to know it actually works. Show us the welding bead it makes.
I literally can't wait to see the final version of this welder circuit....I hope you do it very soon!
I have a feeling that it may or may not come in the next 10 years :).
@@DiodeGoneWild I can help you with the box. You will only need some sheet metal
Now that's recycling!
The only thing that looks real is the welding rod.... but on closer look it's just like party sparklers.... tsk-tsk lol
@@BillAnt Why make disparaging remarks about what he has made. what is ur background in power electronics?
I think he's a creative man,his experts and skills could be helps many peoples who has not enough money to get their needs in particular things
@@BillAnt i took it the wrong way. have a nice day. The guy knows his stuff and everything about his videos is great including his cat and his accent when speaking English!!!!! LOL..
@@BillAnt look like you are jealous
Man oh man! Nothing better than a temporary solution that turns permanent. 😁👍
I wish I could find a way to easily ship things to you from the usa. There have been dozens of times over the past few years where I wanted to ship you something after one of your videos. A buddy of mine runs a local industrial scrap yard and he gets welders and stuff by the truck load. You wouldn't believe the government entities and big companies who just scrap everything after one big job is finished because it's cheaper to write it off on their taxes. Literally stuff that is less than a year old. It makes more financial sense for them to crush it all at the scrapyard then to try and sell it or whatever.
They Don't really allow the public to come in and buy stuff but I go by there a few days a week and he lets me have whatever for about $0.08 per pound no matter what it is. I used to be thousands of pounds of stuff every month sometimes thousands of pounds per week. And it went on like that for the first 2 or 3 years.
But it's been 6-7 years now... And you just can't do that constantly you just can't keep up with that pace. It's more than a full-time job and then you end up realizing you don't get to work on projects because it's a full-time job keeping up with all of that stuff
He doesn't keep anything anymore he just crushes at all unless I want it. a lot of the government stuff it comes in has to be crushed because it's a mandatory things since it was bought with taxpayer money.
But I still get whatever I want and a lot of times donate it to schools and stuff like that when I find someone looking for something, or really need it, or I have the time. But it's a full-time job and I just don't have the time.
You can only use so many things. And you can only have so many storage buildings. Then....If you can't find something when you need it or easily get to it.....then you might as well not have it at all.
Thank You Man. I am so grateful that people like you are out there serving knowledge and granting their wealth mercifully. Keep going please.
I followed your instructions and now I've welded my hand to my face. Did I get a step wrong?
Sounds like it is working properly!
@@appleejack Now you just need to learn the moon walk and you could be the next pop star!
that looks quite dodgy
Good for you, my penis stuck in the hole. Wrong instructions.
That's easily fixable, just solder in a 1mF smoothing-cap taken from some computer power supply.... another smoothing cap from some computer power supply.... another smoothing cap from some computer power supply.... and another smoothing cap from some computer power supply.... ha-ha-ha
When you said there’s no motivation to finish it when it works and a temporary solution turns permanent… Story of my life. Happens with 99% of my projects lol
This is the best video so far... Please more videos like this about things you have made..
Long time no cat 🐈 😢😭😭
Wow, big respect for that engineering!
Please do a video on the IGBT gate transformer and related circuit! Another awesome video thank you!
A quick primer for those who aren't familiar with IGBT devices.
en.wikipedia.org/wiki/Insulated-gate_bipolar_transistor
For some very strange unexplainable reason, you can listen to this guy all day. like a damn twilight zone of hypnotic sound.
DiodeGoneWild my foot. this guy is crazy smart gone berzerk. knows his stuff....
I like your messy design,your brain is full on expert and knowledge
It is now official, Diode Gone Wild is the finest electronic engineer on UA-cam...Yes, smarter than him too.
one has to appreciate what an honest down to earth person you are. Much respect, from a fellow electronic engineer..😀
ok... ok... your suppressor broken and then you build a welder, and a welding mask to fix it!
Big respect!
Thanks DiodeGoneWild for very detail explaination!
I hope that one day you will find the motivation to put it in a nice box and to compleat it.🙂 And also a nice vid.
Nothing new to me, since I've went over your site left and right MANY times :) Just nice to see the old beast in action. I have to calm down a bit, 'cause I tend to get paranoid when I build some high frequency high power circuits, you literally cobbled it together and it works juuuust fine :D
Thank goodness I found your channel۔ love you
Not just impressed with your delivery, but empowered that it is possible.
So....
All things are possible
Great DGW.
It would be great if you show all your old stuff, like the tesla transformers. Your website is amazing.
wait,what?! Danyk? you must be,I'm not mistaking you. I saw the actual schematic,and post on your website! thank you very much!
LoL, this one is your best video. You are now in my personal hall of fame.
Please make a video how to build a simple smps inverter. You're absolutely expert in it.
I would imagine even with your deep understanding in electronics, it would have been created in blocks.
Making each block perform as expected, then matching it to the next block.
It's still very impressive, even ten years later :-D
Hope you fixed the exhaust, exhausting work :)
The sub 17v supply looks like it has a "Top" chip or similar, it's amazing how minimal the circuit can become :-).
I have been to your site quite a few times, you did build a power supply that was massive, or perhaps it was a welder, my memory is bad.
Some of the small supplys i have saved the diagrams, just for personal use only.
The section on p.c switchmode diagrams is very handy for reference.
OMG, this has to be the most impressive project and the best video I have seen on UA-cam. Even without the cat.
MacGyver: How are we going to create a rocket launcher for this minivan without anything to weld it?
DGW: Hold my beer...
Hold my beeeeeeeeer*
Hold my fire extinguisher.
MacGyversky. We had to be like that in Eastern Bloc.
bloody helll, hold my beerra!
welding mask is the best. :-)
It looks quite dodgy and it is........LOL.....It looks sick!
Love it!
Mark made out of a kitty litter box with a piece of glass darkened by kitty poop. tsk-tsk
Diode, I was recently transiting through Czech Rep. and I swear, half of the cars on Your roads are Škodas 😂😂
Yes because they're all repaired by DiodeGoneWild's welder. tsk-tsk
Only national brand that still makes cars in the republic (despite being owned by VW)...The Octavia is fairly popular around EU as well.
@@AKAtheAThe older Škoda cars (older than mk3 Octavia) are nearly unkillable
Surprisingly, he seems to be still alive to this day!
0:25 Excellent schematic! Your work is brilliant!
Man, you have gone crazy big time 😂😁 You EVEN BUILT A SWITCHING auxiliary ps haha.. I am sure that out of 1000 people, 999 would have just dropped in a low dropout linear regulator IC but not you 👍👍😊 ps: pls show the bead you have done on the exhaust pipe haha
Vona Laszlo
:-)
I wanted to make it ever so modern back then, so I used a switching auxiliary power supply. It's not a bead, it's a splash :).
Most people don't know that car exhausts corrode from the inside out. That is to say that the metal actually becomes effectively thinner and weaker, hence it breaks. trying to weld them back up is only likely to last for a short time ( I have done it too). You will find the metal is effectively perforated, and the weld "pool" just runs away getting larger. and not where you intend it to be.
You'll make more new holes than you started with and you may end up junking the pipe instead of fixing it.
But good luck in any case.
Well of course they corrode from inside. There are very hot corrosive gasses and fuel vapour passing through.
Maybe just his mounting bracket cracked, which is doable with this dodgy welder... lol
It seems like you make prototype things I enjoy watching your channel
You have real sick frankenstein engineering skill. Waching you touching contacts with bare hand also makes me nervous though I'm sure you're aware with the dangers but it just doesn't seems as safe..
The device was off when he was explaining it. Welding output is only a few volts so it's safe to touch (Same as touching a 9v battery)
There was a time when people were responsible for their own actions! Not today where the lawyers and insurance companies are slowly making most equipment unserviceable due to crazy safety requirements. Some of the old tube radios I work on have exposed mains on the back some even have a scary accessory plug with B+ 300-600 volts dc typically in a plug that has zero recess on the terminals! If you don’t know what your doing don’t do it, if you are learning ask someone that knows read, read some more and be prepared to get a shock or two that’s just how life goes when working on this stuff. But you must know the difference between something that will just make you mad and hurt vs something that one mistake will kill you instantly like the smoothing caps in a high powered transmitter or high voltage power lines.
There is also a magic kitty inside, like a safety discharge resistor. 🐱
Right, and there's no need for pliers to hold the welding rods... bare hands will do, but just one time though. tsk tsk (jk!)
in soviet communism this is a DIY kit welding machine :)
maybe make some video to explain more in detail how it works (gate driving circuitry, the transformers, the type of ferrite, ecc), it would be interesting!
Maybe one day :). But I think that the schematic and the description on my website explains it ...
@@DiodeGoneWild yep you're right, but I don't understand why you've to used that gate circuitry instead of driving the mosfet directly from the insulation transformer
To vyzerá ako výborná zváračka. Teda až na to nepraktické vymieňanie zváracej elektródy :)
Nice construction haha! Hope sometime in the future you get to fit it inside a proper metal container.
Wow I'm making a digital bench power supply out of scrap currently! It's really cool to see a welding power supply made from scrap!
Hi, about that glass… don't worry about UV. Silicon oxide glass can't pass it; for lab uses when UV is necessary, lithium dioxide is used.
So even a piece of window glass thick enough would suffice.
Bro if i put a normal very thick glass it is good to my eye
That’s awesome Dan!, love it, looks like something out of the apocalypse.
I've gotta hand it to you.... perseverance to sit and wind all the coils. You're proud of them I can tell, and so you should be. I was surprised to see an iron lamination transformer in the output. At 40khz switching, that would be inefficient due to eddy current and hysteresis losses. And it's very heavy. The choke at 40khz would be a similar problem with the bh curve characteristics of iron. The output transformer then looks more like something designed for 100hz, 1khz, 10khz maybe. Please cover the capacitor bank. The charge energy in there is significant and deadly. :) gm2020 . Edited: I saw on ur site, it's not iron laminated output transformer. The two big ferrite cores are impressive. :) Good answer given as to why DC rectification is used with inverter welders - yes the inductive reactance in leads at high frequencies! All around real nice, but a bit on the dangerous side :P
Bloody Hell. Best wishes from Northern Ireland.
Cool ... now I am going for that schematic; understand and try one myself ... great video .. cheers :)
Excellent video 👍
DiodeGoneWild
,
Waiting for next steps,
Thanks For Your Efforts
Now this is the kind of construction I use in my electronics projects! But like I always think ... if it works, that's good enough.
there is the electrolic capacitor for smoooooothingggggggg take my upvote
I Wonder how does it work at 40 kHz with such long wires from primary side transistors to transformer. In modern welders this distance is much close.
The wires are twisted :). This significantly reduces the inductance.
awesome! i read the article number of times years ago - it helped me to understand magic inside these electric machines. i can also recommend the switching PSUs topologies articles, good stuff there...(so far czech only)
You are awesome!
How do you do the varnish coated wire for your transformers? I've managed to salvage some wire for rewinding once but most of the wire I've come across is not good enough for rewinding. The varnish tends to be brittle and crack after removing it.
To answer everyones first question, yes, I very carefully remove the wire. I'm usually counting windings as it is and will carefully unwind and rewind at the same time or will wind it onto a fresh bobbin. The wire usually looks fine as soon as I remove it, but after letting it sit for a few days I can see small cracks showing tarnish from bare copper.
Are you sourcing new copper wire, coating your own, or are there other sources of coated wire I should be looking for?
-Jake
You'd have to ba crazy to coat the wire youself ;). I use an old coated wire from old devices. Deflection coils of old CRT televisions are a good source of a wire. Also sme transformers (not in resin). Some fluorescent ballasts. Some motors (for example microwave oven fans) have a nice coated wire, the winding is not in resin. Also some electromagnets and relay coils are a good source of wire. Also water pump motors from washing machines have a nice winding that you can easily unwind. Also the degaussing coils of CRT monitors or TVs (the big rectangle around the CRT, in a sticky tape).
Fabulous! I want to see your car from every angle possible with proper zoom ins and outs :)
Takhle má vypadat baslt :) Super video. Nenapadlo by mě, že invertor je takhle jednoduchý.
Základ (což tohle je opravdu na kost :D) opravdu je, ale vyjma toho nejhoršího čínskýho šrotu má běžnej svářecí invertor pár serepetiček navíc, který pomáhaj startovat a držet oblouk + pár ochran aby se to neroztavilo ;-)
Kámoš měl kdysi cukání si ho také vyrobit, když to stálo majlant. Nenašel ale pro to čas a pak spadly ceny :)
@@karelventil2647 vyrábět mělo smysl tak nejdřív před 10 lety. Dneska i čong dokáže vyrobit něco, co nevybouchne při 1. zapnutí a zvládne svařovat dýl jak 2 minuty, chce to jen pozorně zkontrolovat recenze před nakupovánim ;-)
Co stále i dneska má smysl stavět, je indukční ohřev pro dílnu, jednotky kW výkon.
Very nice project!! Do you think IGBTs of this kind HGTG30N60A4 can operate at around 80 kHz so as to use a smaller transformer?
Functional but very dodgy. Fits the channel exactly. I would like to see footage of it running.
"This the kind of temporary solution which over time turn into a permanent solution". Yep. I know it wery well. I call it a definitive makeshift.
Thank you very much for sharing this project. Would please share the complete schematic for this project, please again?
You are very talented!
Neat.
I have seen many of your previous projects on your other channel, where you speak Czech. Many of them are quite interesting, I think.
Dobrý den, proč jste nedal tranzistor npn k napájení 2 tlp 250 současně místo tranzistoru mosfet, aby se mohly zapnout tranzistory igpt
I would like to see you TRYING to weld a rusty tissue-thin exhaust pipe with any 'stick' welder. I remember the time my uncle bought a stick welder, the type that runs off a car battery. By the time he'd finished welding his old banger car, it had more holes in it than before he started!
Awesome creation.
I wonder if you could use an old very high watt (server power supply) switching...? Just hook some leads to the output. They're cheap but I don't know if they could take the abuse 😬
Looks amazing, thank you for your content.
Skills and spirit, well done, sir!
It's a miracle that you haven't burned down your house. Go, Go, Gadget!
Occasionally I have to put it out :).
Could the replacement of the small context of the MSFS can be replaced by an integrated circle, for example 2111؟؟
عربي
Nice build! I made one of those with only a transformer. I wound 750 turns of primary and 20 turns of very thick wire as the secondary. The only downside is that the secondary melts after long usage.
Thanks :). This transformer ratio, at 230V mains, would only give you about 6V. Is it a spot welder than? :)
Yes, I use it to connect batteries.
Not dodgy, just diy! And actually it's very nicely built! But how did you dimension the current sensing, the components and the transformer?
Can you please test ZB2L3 battery capacity tester?
Very cool. Great job.
Hello someone PLEASE help me.
I don't have that type of old gate driver transformer . So can I wind wire on a circle toroidal core
Awesome! Thanks for sharing! You have built some amazing stuff on your website, please share more of those projects! :D
What is the output current? I only have old school welders. I would like to build something like this. My stick welder was considered old school 20+ years ago! I do have a wire welder. That's 120v it would be nice to build a switching supply welder from its parts. And be able to power it from 120/240v great video. I hope to see more on this welder. And similar projects!
The maximum current is 100A. This is not so hard to build. The hardest part is to make it safe up to EU standards :).
DiodeGoneWild ha-ha yea that version doesent look like it will pass many safty standards! I don't think any of my projects would... What is the input power, current, how effiecent? With the return to caps?
you really know your stuff. really impressive. keep up the good work.
Love you videos, been watching a lot of them and liking a lot of them lately. I believe this the first one I am commenting on. But I wish to see you redo this and on a nicer PCB layout (maybe professionally printed). Would really like to see this in that housing you drawn 😂
Ah man I love this channel, the welding mask really got me laughing "frrrrom shoesssss". Hey if it works it's fine! Keep up the content :)
Thanks a lot. Is there a reason why the voltage isn't adjustable? You converted this welder into a power supply with adjustable current and voltage, but you use 3845 insted of the 3844 can I use the later one as I don't have the 3845?
I assembled this 2 switch forward schematic from you... I seem to have failed if your schematic is correct... I use an ee65 core using a 1.65mm copper wire as many as 21 turns the inductance reads around 4.5mH the frequency I play is 30khz to 50khz ... but unfortunately the 100 watt lamp / bulb that I series with the elko 470uf 400 volts is very bright and there is no sign the sign will work even though I let go of the light I'm sure it will make my IGBT explode in a matter of seconds... I am very sure that I have assembled it correctly exactly with the scheme you sent in the description of this video ... I've checked everything with my oscilloscope... I think the waves in the out gate drain of the second transformer are correct... please what solution should i change to make it work... thanks .....
Can you finish this gorgoeus device in a video please? Very nice and dodgy of course!
Nice job
State of art dodgy welding machine. Just waiting to reborn with some shiny box.
very nice. ..the schematic show your big capacity..
that is crazy PCB ... nice work !!!
THT components soldered as they were SMD, and the board is made using dremmel :). I should have patented this! Actually, it's made using a homemade "dremmel" made of a motor from an old VHS player.
much respect! but the arc sounded rough. cheers
Please show us the welder in action with your exhaust!
You made a good job of that im impressed how much does it draw from the mains? Ive seen someone welding straight from mains no rectifier or current control yours is far superior
that might be possible in the US, where you can have silly things like 400A service, but here in EU, where the grid is mostly 230V (or 400V between phases), you'd have problems sourcing more then 32A out of commonly available 3-phase sockets.
awesome piece of equipment :D
hello. I want to /will make your inverter welding machine.
I want to learn İf I dont use output diodes will it run? What will happen ?
Great design, almost too great for doing just a welder of that! ;-)
Hi ...!
Always igbts get short sircuit. Its only works well without load.. i tried 40n60 and irg4pc50f.
Does internal diodes of igbts affects malfunction...
Do you design power supplies for a living?
douro20 nah, he has his personal job as far as I know....
Coolest thing ever mate ! As I have seen many inverters as yours in the internet this led me to a question. Why it seems that every inverter has a primary current regulation ? Because for accuracy and tight regulation wouldn´t it be better to measure at the secondary side of the transformer ? Yeah I know that there is DC on the far right but I mean directly at the output of the secondary where still AC exist so you can use the current transformer there too.
I relate to this so much. I have way to meany temporty hacks that became perminat.
this is a great project. thanks for sharing. why did you make it with DC output instead of AC? you already had 40 KHz. does that not work with welding? what is the Dc output voltage? is it around 9V like u said?
High frequency voltage isn't good for welding. At 40kHz and such a high current, just the inductance of the welding cables would be a big problem. And of course, most electrodes require DC.
Did I say anything about 9V? I think that the arc voltage may be like 12-15V at a very short arc or about 30-35V at a very long arc. Mostly like 20-25V.
@@DiodeGoneWild yeah actually i think i heard u saying something like 9 V. I looked at your weblink for this and saw that long arc is 3.6V and short arc is 1.2V based upon ur DVM. However i dont know how much current was passing at the time. so u say that short arc is 12-15V and average is about 25V... thanks. i often wondered about this.
@@DiodeGoneWild Ok Thanks. I also did not know that most welding required DC. and yes i did not think of it, 40KHz on the long welding cables will be a problem. thanks for pointing this out
Finally ... I've found your website & hope you explain It ;)
& of course You're PCB's are very dutcyyy
& where the final drawing of it, Sir - there are many components adding in your explaining from the blog :)
could you please make a video turning this to induction furnace ?