#293

[@vkskasana]

On 25th december 2020, after seeing your video series on welding machine, i decided to make the same chinese welder on my own. On January 10th 2021, i gathered a similar chinese machine for reference. Subsequently, i tried to implement the control and completed the control while using the power section of other machine. Successfully, got the output at no load. However, when the welding the igbts use to blow. Tried again and again but couldn't understand what was i doing wrong. I have also asked couple of questions from you and you very generous to respond to my comments. Now, today finally i got the welder working. I thank you with all my heart for doing such a wonderfull job. As always, you videos are extremely in depth and a great source for knowledge. I can't thank you enough for the support these videos have provided. 🙏

[@HaseebElectronics]

wonderfully awesome it is my pleasure that my efforts are helpful please accept my best regards ❤️❤️❤️

[@vkskasana]

@@HaseebElectronics waiting for further videos to learn from you...🙏

[@vkskasana]

Hi..just have one doubt..the machine i have build has a current range of 80-200 amp. How can i bring the minimum current to zero?

[@kennymanchester]

I cannot believe I missed this series before, but I'm so glad I found it after 2 years. Very very nice close to a fantastic resource.

[@Darwishkhan]

Good morning great work bro sda slamat raho

[@kuchpanktiyajindagiki]

Bhai dooj ke din mere bhai ko aashirwad. Awesome useful sharing as always.

[@kmhovlog6185]

again watched wow awesome excellent informative video big thumbs up from me thanks for sharing stay blessed & happy ameen take care have a nice day

[@HaseebElectronics]

Thank you so much 🙂

[@ARA-ENGLISH]

Lk 3 wonderful sharing ❤❤👏👏👏👍👍👍😊 FullView didnt skip the ads Keep it up

[@anonhollmuller4032]

Thank you verry much sir. Greetings from Bavaria:)

[@HaseebElectronics]

You are very welcome

[@carlitomadrona6211]

this is so awesome, your topic was seldom taught in some diploma/school. my problem now is how to get consistent internet🙏🙏🙏👍

[@Ayeshainthekitchen]

Assalamualaikum dear brother. MashaAllah excellent and detailed tutorial. Thanks for sharing your valuable Knowledge. 👍

[@kmhovlog6185]

Awesome mashallah superb informative vedio big thumbs up thanks for sharing stay blessed always be happy good morning have a nice day

[@akolbireprosper560]

You are simply the best. Your explanation is superb. It is very helpful to me.

[@HaseebElectronics]

thanks a lot dear

[@fabiodordoni5836]

Very interesting video. I was looking to bypass the "no stick" feature on a IGBT welding machine, do you have some reference schematics to analyze and understand how to do that or anyway some suggestion? I know that is a smart feature and there are no sense to bypass on welding procedure but I will go to use the IGBT welding machine as DC power supply for feed an electromagnet that obviously is detected as a "stick". Thanks in advance

[@AngelCruz-mt2ur]

Professor I hope you are well!!! I have a question: I have a Smith electric brand welder but it does not make an arc and I have output voltage where the welding cables are connected, what should I check?

[@BajisKitchen]

Allah keep you happy and healthy and keep sharing your experience mashallah 👍👍👌👌

[@carolinediyandvlog]

Great video , thank you for sharing and have a good day

[@gaineredison390]

Thank you sir. Is it common for that section to get faulty and wat happens if it falls?

[@AbdulMomenZargar60]

Good Morning & All The Best

[@adeebakashif]

MashALLAH Great work 👍🏻🇨🇳🇵🇰

[@daliborjukic7039]

Hello, I like your channel... lots of usefull information. I have a question regarding a igbt welder that I'm cuurently working on. It had low output voltage 1,7 volts. Problem is that on SG3525 IC pin 8 (soft start) is reading low and in normal operation it should read high (5V ). I've removed smd transistor j3y that was pulling down pin 8 and after that output voltage is 61,5V. So the question is : can I leave it working like that? Thank you for your shared knowledge and time.

[@muaddib8309]

Very thorough explanation, well done sir.. I have a problem on my cheap chinese welder. The minimum amperage setting seems to high so i cannot weld thin material. But i cannot see internal adjusting potensiometer so i can lower it. My question is how i modify the circuit in order to lower the treshold of the minimum amperage, says 20-25 ampere. Thanks... (Its a generik sg3525 controler machine)

[@jabwemake7625]

Wa alaikum Aslam.. thnx for sharing brother 👍 stay connected

[@kahitanongmaisip9358]

us a thankz for the free knowlege you give me i dont scape the adds vid. ty sir so much

[@ExtralargeafricanEes]

Hello Thanks for sharing your knoledge

[@saarike]

Simply excellent! Thank you.

[@georgesdibeh7826]

Hello sir Im having some problem repairing a welding machine After changing the igbts and the ntc Its always giving its maximum current when welding I changed lm358 and 3525 same problem What should i check thank you

[@rayansinger672]

I learned a lot from your video about MMA welding machine, thanks so much. I'm wondering if you could make some similar video about MIG welder?

[@DesiSwaadh]

Like very nice so beautiful 👌👌😍👍

[@fabiodordoni5836]

Very interesting video. I was looking to bypass the "no stick" feature on a IGBT welding machine, do you have some reference schematics to analyze and understand how to do that or anyway some suggestion? I know that is a smart feature and there is no sense to bypass on welding procedure but I will go to use the IGBT welding machine as DC power supply for feed an electromagnet that is detected as a "stick"

[@KashmirFood]

Ma sha Allah Another very good And informative video 👍

[@NZChannel22]

Very informative upload 👍👍👍

[@ratnadipghosh8230]

Hello Sir, I had a igbt based welding machine. It provide 50 vdc and 200 amp max as its output power. I wated to modify its output power section such a way that I get 300 vdc and 33.33 amp in output. In that case what I can do? Can you please give me few suggestion

[@jomarkapdol2263]

Sir i have question i have repair a inverter wleding the problem is if you try to test to weld in settings of 50 ampere the igbt will be damage i’ve try to replace the two ic connected to sg532 that give freq. to driver transformer but the issue is the same if you power the machine is good but you try to weld it shutdown

[@shankarbirajdar1356]

Sir i want use these welding machine as ac to dc converter by redcuing voltage from to 48volt dc can i modify and use it?

[@carloscorrea4359]

Gracias de nuevo amigo por la entrega que tienes al enseñar tu sapiencia aprendí bastante en los 7 videos dedicados a la máquina soldadora.. que el creador te bendiga grandemente.. quiero pedirte un favor me puedes mandar el diagrama con el que insiste la clase de este video Gracias de antemano y saludos desde la ciudad de cali Colombia

[@خالدباشميل-ب9و]

Thanks for shearing knowledge

[@HaseebElectronics]

thanks a lot dear. stay blessed

[@samiafazal]

Always superb work

[@michaellawton7876]

Can you explain how the two LEDs on the PWM module work? Should they be on or off?

[@muhammadatif7310]

Assalamualaikum ustad sb! Npn 8050 kya kaam krta hay control card main, sometime smjh hi nai aati k transistor q lgaya hay, bs collector se guzr kr emitter ground ho raha hota he, sir kindly explain in detail, thanks

[@AbdulMomenZargar60]

Salaam Janab Bhai Saab

[@burhanuddinbhiwaniwala618]

Great video.... And you explained it in very detail way...... But i am facing a problem.... My single kit welding machine gives and output voltage of 64v..but still it doesn't welding.... Even it doesn't sparks for once

[@haykalbourjeily1438]

Thank you alot for giving us all these valuable information. Please if you can help me solving this problem : The power light in my welding machine is on off all the time when i turn the machine on and the relay is open closed all the time. (mosfets & diods are all right)

[@HaseebElectronics]

best regards please check low voltage power supply section, i think that have fluctuation. remove cooling fan, and check check relay contacts, might be it is not contacting properly,

[@haykalbourjeily1438]

@@HaseebElectronics okay thank you for replying

[@sukhdeosingh617]

Excellent information. Thanks a lot.

[@user-pq5tz5pn4g]

السلام عليكم بتوفق دائما أخي

[@whynTV9]

make a video for this sir, with the actual board for easy to follow then draw a diagram jut like your doing in the other video you made thak you sir..

[@susantaatha6468]

Beautiful explain. Thank you sir.

[@DavidDewey100]

Hasseb. I have lift tig. I would like to implement HF. Any ideas? Regards!

[@muhammadishtiaq24]

Excellent information

[@malvargeronilla3502]

sir can you help me?i have a fuji inverter welding machine. it cannot be adjusted anymore.it can weld but i cannot lower anymore.what is the priblem?is it possible the control card?

[@HaseebElectronics]

it seems there is problem in control card. it is not controlling pulse width so please check current transformer, output shunt resistor, current setting pot, current limit setting POT (on the card) operational amplifier / comparator IC

[@wiltanschannel82]

What type of signal are going to electrodes? Are they pure dc, or PWM.

[@HaseebElectronics]

it is output of the rectifier it is unfiltered pulsating DC voltage

[@michaelpelumivictor5711]

Hello sir am having problem in 300mma welding machine if I increased the current control it will display increased but d output is an increased pls that is d problem.

[@mohamedjavaadh]

I like your videos.

[@نعيمقرشي.التدفئةالذكية]

al salam alukom mr hasseb i want to tchange the frequence of my welding machin .the surcuit is uc 3525adw frome the resistor in the 6 pin is this just or no plese tel me .

[@danki2104]

I have a problem with this device. works at max current constantly Igbt ok frequency at igbt 51khz Diode ok Voltages ok Question? 1. Does the control idle or only when the appliance starts to weld? 2. How is regulation done? 3. How to test it? I've attached a picture of device. On the left lm258, in the middle sg3525 and on the far right 4688 2 pcs Signal to 4688 at 2 and 4 pins ok pwm at 50% max Signal at 11 and 14 pins ok pwm at 50% max Sg3525 Duty cycle at max (50%) Short circuit pins 2-16 Pins in short circuit 1-10-12 Pins 3-4 are not used Control pin 30 pin Lm258 sg3525 and 4688

[@farihabaloch4805]

As always great👍✌

[@Althu-blog]

Good video powerful

[@HaseebElectronics]

best regards

[@engelbertodelapena9526]

hello haseeb can you discuss fish stunner with igbt on output thanks

[@localnews2302]

Hi sir,I got a problem with an inverter welding machine....the problem is when I increase and decrease the amp the digital display amp its increase and decrease normally but when welding its burns the metal,its like its has block on high amp...can you guide me pls to solve that problem thanks in advance.... ...

[@jitendrapatel3625]

Sir current fluctuating in welding machine in 3phase welding machine what to do? Please guide me regarding this

[@HaseebElectronics]

please check CT adjustment please check shunt feedback circuit and current limit setting on control card

[@jitendrapatel3625]

@@HaseebElectronics current set limit in control card means there some preset which is set by small screw driver right? And For CT adjustment and shunt feedback can you explain something in short word. Please sir.

[@goutammukerjee6229]

It is found very useful explanations of control circuit with SG 3525A , I am facing problem in 200a mma inverter welding machine with the ic UC 3846 dw , associated with 2no lm 293 , tlo84, and 2 no 4688 all are SMD from ,pcb consists 24 pin. Sir if you found such control card please explain, control pcb has code no PKB 200. The welding machine belongs to iBELL 200A

[@HaseebElectronics]

i will expalin it soon

[@goutammukerjee6229]

Sir, I am waiting for your kind explanation about the control circuit with uc 3846DW ic

[@STV-th2tv]

Thanks for shearing knowledge my brother I watch and like video thanks friend welcome please

[@kuchpanktiyajindagiki]

Thanks for sharing.

[@khubchanddewangan8086]

Great sir

[@sureshlingabathina]

Excellent. Are you an engineer great knowledge, are you teaching in engineering collage?. Pls start home Inverter series.

[@HaseebElectronics]

best regards. dear i am engr Muhammad Ashraf, sharing my experience so that someone can take benefit. i have many requests to sart ups, vfd circuits, unluckily here in jordan there is no solar energy because electricity is provided by the government without interruption, and to plan the real consumption of the country. and the public is not allowed to use solar energy. i have plan, when i will visit pakistan i will start a detailed series for repair

[@sureshlingabathina]

@@HaseebElectronics God bless you. I am also engineer. We can see the difference between engineer and normal repair person explaining, so I asked, only engineers will have such capability. Good luck.

[@7276556536]

Good video sir

[@yogipradana9221]

What is the function of the trimmer on the control board?

[@hamidh9847]

Very good 👍

[@nemueldolaiasi1926]

My welding machine is 200mma once spark the o.c alarm will come on and no out put but when I switch off and switch on again the o.c alarm was reset again but when spark the o.c alarm come again, what is the fault and how can I fix it?

[@HaseebElectronics]

whenever there is difference between output current, required current and primary side current then there will imbalance and there will OC light and the drive is terminated to protect the circuit in control card or its surroundings there are 2 or 3 potentiometers first of them is to set input current (most of time it is on the main board and connected in series with required current setting po) second is current limit (it is used to set maximum short circuit current limit) you need to adjust this potentiometer third is feedback current calibration fourth potentiometer is sometimes used to adjust CT signal (if it is available try to in crease its resistance) it is connected in series of of the CT signal

[@emperorfestus8373]

I have a welding machine too, even with the lowest amp it still trigger the OC/temp light and stop working, is there a way to completely bypass this sensor? As getting required part is not available..

[@kashifelectronics8809]

Asalam-o-Alaikum god bless u...sir am watch this video this time ...am electronics student but am freshly to start my shop welding inverter repairing ..soo i want asked many small questions if you want ans me than all shares..... Am very interestedly watching urs videos this weeks am very happy to learned the right concet ....

[@HaseebElectronics]

welcome and best regards you can also check same videos in Urdu language on my Urdu channel Haseeb Electronics Urdu all these videos are in Urdu language on that channel

[@pakistani-vlogger.890]

good knowledge

[@cesarmarcedo4472]

Top! SHOW 🎉🎉😊❤

[@hakikosaber1670]

Thanks for all your videos. If you need, please, I want the same explication (control board) with lm358 and Pic16f27a because I have this conbinaison in my machine weldyne, it's the Marque galagar .

[@naeemansar3524]

Dear sir my welding machine gate emiter frequency not match one gate emiter 25khz another gate emiter 52khz plz help

[@ghafooorhussain1547]

So nice

[@akankshayadav1015]

One video on oc prblm sir of three plate machine

[@vkskasana]

I have found the pcb for the original machine you repaired. Could you please help me in how set to the maximum duty cycle and the maximum output current?

[@vkskasana]

Pcb = circuit diagram

[@HaseebElectronics]

maximum duty cycle is achieved by setting maximum current limit from potentiometer start welding and connect clamp meter on one output wire to measure ampere connect oscilloscope to the gate of th IGBT to check the duty cycle then adjust current control pot on card to get maximum duty cycle

[@vkskasana]

Thank you for the reply. However, other than the current trim pot. We also have a trim port connected to the offset null pins of ca3140. How do i calibrate this?

[@vkskasana]

Also, the above method requires to turning on the machine and then accordingly setting the maximum current of the machine. In such a case, if the current at any instance even by mistake crosses a threshold, it might damage the igbts. Is there any technique so that i can set the maximum allowed current without turning on the machine

[@vkskasana]

Btw as a feedback, I'm using a shunt resistor that will give an output of 75mv at 180 amps

[@malvargeronilla3502]

if the control card is defective.what would be the trouble?it can still weld or not?can anyone help me.

[@HaseebElectronics]

if control card is defective, it will not generate pulses to drive igbt or MOSFET or if it will generate drive pulses then might be uncontrollably, in this case it can weld but it will not control current

[@malvargeronilla3502]

@@HaseebElectronics thank you. however the lcd display for current is working properly.it adjust low and high but the only the problem is the output current is unadjustable. i just clarify sir.in this case does the control card is the problem?thank you

[@malvargeronilla3502]

@@HaseebElectronics it can weld but it cannot control current.therefore the control card is the problem?can you confirmed sir?i will wait for your reply thank you

[@HaseebElectronics]

okay you have to check current setting pot current adjustable on control card current transformer CT feedback current shunt resistor feedback operational amplifier ic

[@malvargeronilla3502]

@@HaseebElectronics the part number of the on control card is tl084 and uc3846n and i also see other ic not on the control card like lm324. i want to replace them but i dont have any.but i see a control card on online store.but i just clarify first whic one is defective

[@roomithegamer2499]

Be careful Stay safe

[@ManojKumar-ej5kt]

3525 pin no 11 and 14 voltage are not out in this pin but I replaced this ic

[@skalemhossein6175]

Sir frequency kaise chek karte hain

[@pedroquintero8149]

Saludos desde Chile , consulta Inverter Igbt Welder " Toyaki " MMA 200 , suelda al maximo y derrite electrodo y no regula la corriente , el display esta ok ...!!! , ic Uc3846 Y tL084 , Esta nueva ...gracias .. Se reemplazó optoacoplador , pero continua así ...

[@vkskasana]

Could you please share the circuit diagram for the machine you troubleshooted?

[@vkskasana]

Btw..your entire session on this has been very useful and informative.

[@HaseebElectronics]

best regards dear. the diagram is in the video description. please check the description and download it

[@vkskasana]

@@HaseebElectronics thank you..but this is quite different from the machine that you repaired in your series of videos. I'm looking for the circuit diagram of the machine you repaired in your videos.

[@HaseebElectronics]

@@vkskasana okay dear. today I will attach that also

[@vkskasana]

Thank you.☺

[@Mr.littlebuzz]

Sir hindi me video banao please 🥺

[@HaseebElectronics]

aap mera urdu channel visit karein, Haseeb Electronics Urdu www.youtube.com/@haseebelectronicsurdu

[@Kastari_Ck]

Minta skema las igbt pakai 8 biji igbt bos

[@kotatimurporang1044]

293 Inverter IGBT Welde

[@rohelkhan3240]

Hello sir

[@HaseebElectronics]

welcome dear

[@joshielectronicsoundsarwar3084]

Good morning sir please video Hindi mein banaen aapki English mein samajh mein nahin aata hai

[@HaseebElectronics]

hindi aur urdu keliey mera doosra channel he (haseeb electronics urdu) aap us channel per visit karein wahaan saari videos aap hindi me dekh saktey hein

[@ChhaiPech]

How can I get pcb schematic pdf download free

[@danki2104]

MMA250 GERMANY STYLE

[@tvmtg5668]

Good Video! Full watched…and Like. reply to me, Wishing you lots of luck!

[@roseelectronics4582]

Last part? Good.

[@Kastari_Ck]

Minta skema las igbt pakai 8 biji igbt bos

[@HaseebElectronics]

selamat datang sayang, saya akan berkongsi rajah dan pautannya tidak lama lagi

[@BatuKeramik-zv5mo]

@ck. orang Indonesia isn't ?

[@BatuKeramik-zv5mo]

Halo Pak aseb,, how to adjust voltage on mma welding. Thanks