A nice touch offering up alternatives to solve problems. We need to be problem solvers and that includes not throwing away a useful piece of equipment just because one of the SMPS in a system is bad or unavailable components. Nice work around for measuring PWM too. Well done.
Salam un Alikum, I have experience more then 30 years of electronics, and really i have enjoying of yours method of teaching and every day i am trying to teaching from you, May ALLAH boost your knowledge Hadi Rizvi
Very informative video and thorough explanation. I'm repairing my single board Total brand inverter welder. Now i know how to test low power smps section.
Big thanks brother God bless you, as every time very excellent and rich video of troubleshooting technics. i hope you continue more parts about this subject, about impact of duty cycle adjust by potentiometer value and output. A thousand thanks
بابت وقتی که گذاشتی ممنون پیدا کردن آی سی خیلی راحت است اگر مایل بودی میتوانم چندین سایت معرفی کنم که از طریق پایه های آیسی میتوان مقدار آی سی را پیدا کرد خیلی راحت فقط کافیس سه عدد از پایه هارا داشت
This is what I call power jumping, some times if I fail to get the ic ,I use a 24v external Chinese smps in Uganda it is difficult to get spare parts,so as a technician I use a 24v smps. Thanks for your work.
I doubt that 68kOhm is correct. If so, Vcc of IC would be 55 Volt that would be too much for capacitor and IC as well. Looks more like 15 kOhm. Nice trick with external power injection on capacitor to check function of low voltage aera. Thank you. 👍
inverter welding for repair had low 5v of 7815. d output was open and 15v was read. there'was no shorted. 2pcs mosfet were also good. possibly whre's d problem?thnks in advanve
@@HaseebElectronics if there's a load, d 7815 could not regulate its volt. while d output is open, the volt turns good. 7815 should be replaced to see if same result. other parts were tested and found no shorted. thankssss
I am with a weld machin which turns on and turns off when i want to weld. O tested two IGBT and are ok. There aren't short in power circuit. But the wave form of IGBT gate aren't square and voltage in the module board is up and down in looping ( all eletrolytic caps and IC's). Same happens to fan connector. Why ? Is it PWM the issue ?
Wow, great series of videos! Thanks for sharing man! Much appreciated. Any videos on offset high power circuits say for instance like taking the square wave like from a modified sine wave inverter (though for use in welding I'd like to know eventually so to construct) and offsetting so able to set different ratios of DCEP or DCEN for TIG welding aluminum best. Seems like need another half bridge so a full H-bridge to be able to design & construct. Then can make the alternating current square wave that somehow can be adjusted to offset where I guess just having a power control of some sort like another PWM or switching circuit for each voltage range side (DCEP and DCEN ) to change the power averaged on each side H-bridge switching event.
On another and somewhat similar note, I'd like to learn how to use the Prius Gen3 inverter h-bridge for generic rectified inputs for optional 120, 208-240 and 460-480 pure sine wave outputs since seems like is feasible with the properly designed controller. I was also wondering what would be the best way to design a circuit for options to output as a welder power supply besides feedback for CV or CC and frequency control, in particular a high power offset circuit so for use in aluminum welding, i.e. an offset square wave so can select a range of DCEP or DCEN ratios. So that is why this is somewhat related since the control board design would be similar for the welding controls. Thanks again sir! Excellent channel! Glad I found.
salam geet video, everything is clear especially with schematics, for me you are the master of electronics, i get the problem when found a circuit diagram. i have ARC welding machine 200A witch contain a TL084CN, my problem the output frequency is under the normal 29 khz and i don't know the condition of problem, can you advise me to solution
I has a 200 arc welding machine which is one spark no working at all and the o.c alarm will come on ,what is the problem and how can I find out the faults?
most of time it needs to calibrate the control card potentiometers for output current, current transformer signal and current setting potetniometer (front panel current knob) i will try my best to explain it soon
@@HaseebElectronics okay I look forward for your response, because my welding machine is new one I just bought it unfortunately when I started to use it this problem of o.c alarm is coming up.
@@HaseebElectronics if changed current Cantrol to voltage Cantrol..... As shunt resistance circuit use to voltage regulator....... please changed to circuit as to big SMPS 🙏🙏🙏🙏
cordial greetings very good your videos thank you very much, I have a question which is the reference of the desoldering iron you use. I would like to have one like that. Greetings from Colombia.
best regards now a days i am using Weller WR3M rework station, but is much expensive and its spare parts are notoriously expensive before this i used HAKKO 701 ESD safe rework station. it is much cheaper than this WELLER and its spare parts toooooooo cheaper than WELLER kindly check video number 511 for more details
Assalamualaikum....can make video about tranfomer,coil.step up step down trnfomer.filter coil.how to check good or not..other youtuber have coil tester .it that good tester?
Hi, I have a similar circuit from my welder. I believe it acts more like a current source, than a voltage source. If I want to convert this to a a 48 PSU, can I just... 1. Reduce # of windings on output transformer (it is middle tapped, so I'd reduce each side).. 2. Add a large electrolytic capacitor to the output? Ta.
Bro how can we measure at gate frequency. Including driver transformer to find faulty ( either short or open). Is it possible with digital multimeter without hz.,...
how to convert power supply low voltage.if ic have no available.can i use 4wire 380v to 24v. or 24v regulated.how can i connect.i hope you answer my question. and you make a video for this.thanks and more power.and more video you make
@@HaseebElectronicsThanks for quick response. So it would not be possible to process the output transformer that would give a higher voltage with less current? HV start and solenoid valve activation would easily be added to an existing source.Greetings from Croatia
@@Darkoford-tools-electronics for price, is more relianle to buy cheap low cost plasma and upgrade it for more durabiliter and power. Me when im done my repair. I add 2 rectifier . Stock 60amp and 80-90% load ...after.. 100amp and 45-60% load. No heating, and extending life ...(i should not tested but module is ready to plug in) (2x 30amp +2x20amp (20 because is what i have). I wouldlike to update igbt resistor itoo by 2w ou 4w resistor dont know rhe effect. And propably add some ceramique capacitor and add 2cap on pilot arc capacitor bank.(2slot not useed) Dont need more power machine. Just trying to get better duty cycle whitout heating or damaging componoent. Unload coponent to get better reliability
Nice video 👍
Best technician I’ve video watch, I don’t speak your language but understand everything you say thanks
most welcome and special thanks for your valuable message
Lk 90 Nice upload big lk👌👌 12 minute video I saw
A nice touch offering up alternatives to solve problems. We need to be problem solvers and that includes not throwing away a useful piece of equipment just because one of the SMPS in a system is bad or unavailable components. Nice work around for measuring PWM too. Well done.
Like 31 awesome excellent informative vedio big thumbs up from me thanks for the update stay blessed always be happy good morning
Salam un Alikum, I have experience more then 30 years of electronics, and really i have enjoying of yours method of teaching and every day i am trying to teaching from you,
May ALLAH boost your knowledge
Hadi Rizvi
MashaAllah very nice sharing 👍
Sir app samjahne tarika bohat bariha ha I like you your vedio
Sir your video very useful for me. Thanks for sharing your techniques.
You are most welcome
Each point is delivered with a great concept and in amazing way ...Thanks for your valuable concern and details...God Bless you.
Ser... I'm from Philippines thank you for this information...
welcome and best regards
Very informative video and thorough explanation. I'm repairing my single board Total brand inverter welder. Now i know how to test low power smps section.
Really valuable program , appreciate
Again a unique tutorial good explanation by diagram also you made work easy
I admire your vast knowledge on things and how your work through the circuit , well done and thanks for sharing your knowledge with us.
thanks a lot for your valuable comment
Very informative video .....very well explained big like from behnon ki batein
Thanks sir addional knowledge for me sir your tutorial vedio is beneficial
Most welcome
Wonderful video dear friend, happy Sunday!!!
Walikum Salam! Great work 👍🏻🇨🇳🇵🇰
From this part, I learned a great trick! Thank you so much sir
Mashallah
You are most welcome
thank you very much sir. from cebu phillipines..
You are very welcome
Thanks for deep knowledge.
So nice of you
Thank you for your efforts
My pleasure
good work sir...
Thank you for your appreciation 🙏
it is very nice and than very details
it is my pleasure
Thank you Sir, always the best.
Always welcome
Very informative video thanks very much
best regards 💕
Always new information thanks for sharing 👍👍👍
TOP VIDEO MY FRIEND GOOD LUCK 👌👍
Good works Electronic serkit, same sajes to works us
best regards
Great sharing. Your videos have much to learn always. Very informative video shared. Thanks for sharing bro keep it up.
Big thanks brother God bless you, as every time very excellent and rich video of troubleshooting technics. i hope you continue more parts about this subject, about impact of duty cycle adjust by potentiometer value and output. A thousand thanks
وعلیکم سلام سدا خوش رہو بھای عمدہ ورک
شكرا جزيلاً لك و جزاك الله خيرا
great job dear bro
full view, stay blessed
MashaAllah , nice work dear friend , i like
Very informative vidoe
best regards
Each & every point is so well explained by you..
Great job 👌👍👏👌👍👏
Gracias que buena clase felicitaciones por tener la bondad de enseñar tus conocimientos saludos
Great video sir
Good Work Liked very much
Watching sir...thnkz for sharing
Lk 129 👏👏👏good job 😊👍👍
Very very well explained 👍😇
Salaam Janab Bhai Saab
thankd for method of testing secondary
You are welcome
Nice sir explain thank you
Nice vidio thank to ur information
Great informative video
So wonderful video thanks for sharing ❤️❤️
Thank you professor.
بابت وقتی که گذاشتی ممنون پیدا کردن آی سی خیلی راحت است اگر مایل بودی میتوانم چندین سایت معرفی کنم که از طریق پایه های آیسی میتوان مقدار آی سی را پیدا کرد خیلی راحت فقط کافیس سه عدد از پایه هارا داشت
Nice 👍
This is what I call power jumping, some times if I fail to get the ic ,I use a 24v external Chinese smps in Uganda it is difficult to get spare parts,so as a technician I use a 24v smps. Thanks for your work.
super gut erklärt, vielen dank.
informative video
Good work
I doubt that 68kOhm is correct. If so, Vcc of IC would be 55 Volt that would be too much for capacitor and IC as well. Looks more like 15 kOhm.
Nice trick with external power injection on capacitor to check function of low voltage aera. Thank you. 👍
Thank you,
You are welcome!
v good tanks.
best regards
nice.awesome
thanks a lot
What point is that where you're checking for the frequency? Thanks.
Very good sir one think why using beeds in diode
some welding machine using 7pin ic.can i use it
you have to check the original ic datasheet and the you can find the equivalent to replace it
Sir why can not we give some externel voltage to the input of optocoupler and see whow the out going and controlling.
Nice explaination & lot of trick for troubleshooting, loved it so much!!!
Anw, any video how to build your unic desoldering tool?
Can you make a video for inverter aircon split type or window type
inverter welding for repair had low 5v of 7815. d output was open and 15v was read.
there'was no shorted. 2pcs mosfet were also good.
possibly whre's d problem?thnks in advanve
may be 7815 is defective so it may be reason for low voltage
or may be there is some short in 7815 line
@@HaseebElectronics if there's a load, d 7815 could not regulate its volt. while d output is open, the volt turns good. 7815 should be replaced to see if same result.
other parts were tested and found no shorted.
thankssss
@@vjrperalta6321 in this case, it is to be verified by replacing 7815
@@HaseebElectronics thanks a lot!,.
sir output voltage is fluctuating please sugest
I am with a weld machin which turns on and turns off when i want to weld. O tested two IGBT and are ok. There aren't short in power circuit. But the wave form of IGBT gate aren't square and voltage in the module board is up and down in looping ( all eletrolytic caps and IC's). Same happens to fan connector. Why ? Is it PWM the issue ?
Sir,
For series test lamp can we use LED 100w bulb in place of 100w filament light bulb when repairing smps circuits?
Thanks for your reply, sir
2st view mere bhai. great sharing bhai Allah pak ap ko kamyabi atta farmay ameen. ap kaha he kafi dino se meri taraf nahi aye
Wow, great series of videos! Thanks for sharing man! Much appreciated. Any videos on offset high power circuits say for instance like taking the square wave like from a modified sine wave inverter (though for use in welding I'd like to know eventually so to construct) and offsetting so able to set different ratios of DCEP or DCEN for TIG welding aluminum best.
Seems like need another half bridge so a full H-bridge to be able to design & construct. Then can make the alternating current square wave that somehow can be adjusted to offset where I guess just having a power control of some sort like another PWM or switching circuit for each voltage range side (DCEP and DCEN ) to change the power averaged on each side H-bridge switching event.
On another and somewhat similar note, I'd like to learn how to use the Prius Gen3 inverter h-bridge for generic rectified inputs for optional 120, 208-240 and 460-480 pure sine wave outputs since seems like is feasible with the properly designed controller.
I was also wondering what would be the best way to design a circuit for options to output as a welder power supply besides feedback for CV or CC and frequency control, in particular a high power offset circuit so for use in aluminum welding, i.e. an offset square wave so can select a range of DCEP or DCEN ratios. So that is why this is somewhat related since the control board design would be similar for the welding controls.
Thanks again sir! Excellent channel! Glad I found.
thank you
الله يسعدك
@@HaseebElectronics تحياتي للمهندس المبدع حسيب
salam
geet video, everything is clear especially with schematics, for me you are the master of electronics, i get the problem when found a circuit diagram.
i have ARC welding machine 200A witch contain a TL084CN, my problem the output frequency is under the normal 29 khz and i don't know the condition of problem, can you advise me to solution
Very good explanation sir, is there a video that you did a bypass for the damage ic? Thanks
sir can you continue this video with the original optocoupler and may i know the tool that you use to de- soldering thanks a lot
optocoupler internal or external, the same
desoldeing toll is WELLER WR3M ESD safe rework station
I has a 200 arc welding machine which is one spark no working at all and the o.c alarm will come on ,what is the problem and how can I find out the faults?
most of time it needs to calibrate the control card potentiometers for output current, current transformer signal and current setting potetniometer (front panel current knob)
i will try my best to explain it soon
@@HaseebElectronics okay I look forward for your response, because my welding machine is new one I just bought it unfortunately when I started to use it this problem of o.c alarm is coming up.
Dear Sir, what is to use battery charging this welding machine.........impossible?
it is too difficult, because welding machine is just current controlled based, while
battery charger is Voltage controlled & current controlled
@@HaseebElectronics if changed current Cantrol to voltage Cantrol..... As shunt resistance circuit use to voltage regulator....... please changed to circuit as to big SMPS 🙏🙏🙏🙏
@@indianbrijmohan8957 yes, in that case we have to induct voltage control and current control to make it more effective
cordial greetings very good your videos thank you very much, I have a question which is the reference of the desoldering iron you use. I would like to have one like that. Greetings from Colombia.
best regards
now a days i am using Weller WR3M rework station, but is much expensive and its spare parts are notoriously expensive
before this i used HAKKO 701 ESD safe rework station. it is much cheaper than this WELLER and its spare parts toooooooo cheaper than WELLER
kindly check video number 511 for more details
nice video Haseeb...where did you purchase your soldering iron with the flux apparatus
Invader welding machine part5 curcuit in Urdu plece
Sir I have ibell make igbt welding machine but there is no output in supplementary side of the pluses transformer can you please rectify the doubt
❤️NICE❤️⭐️
Can you please advice whether to change or bypass when the step down low voltage transformer (24V) has been burnt? Thanks
Assalamualaikum....can make video about tranfomer,coil.step up step down trnfomer.filter coil.how to check good or not..other youtuber have coil tester .it that good tester?
Mashallah
Good
what is instrument you are using to remove IC, pls share the link to buy.
it is Weller WR3M rework station made in Germany
you can purchase online from indianart
👍
Please can I convert this welding machine to 400vdc power supply by modify it's transformer
mantap kak
Hi,
I have a similar circuit from my welder. I believe it acts more like a current source, than a voltage source.
If I want to convert this to a a 48 PSU, can I just...
1. Reduce # of windings on output transformer (it is middle tapped, so I'd reduce each side)..
2. Add a large electrolytic capacitor to the output?
Ta.
السلام عليكم ورحمة الله وبركاته ماسبب سخونة مقاومه 20اوم تقوم بتوفير24 فولت لمنضم الجهد 7815
عليكم السلام وين موقعها اخي الكريم
اذا مرت عليك هذه اللحامة ابغى ارقام ترانسستور موسفت IGBT سخنت عندي الاثنين والرقم مو بواضح
Bro how can we measure at gate frequency. Including driver transformer to find faulty ( either short or open). Is it possible with digital multimeter without hz.,...
how to convert power supply low voltage.if ic have no available.can i use 4wire 380v to 24v. or 24v regulated.how can i connect.i hope you answer my question. and you make a video for this.thanks and more power.and more video you make
that pins look like DK125 OR DK125 i guess
Hello friend, in the circuit where the sg3525 is in the fan connector it is giving me 25.1v instead of 24v
it is ok. it may vary from 20 volt to 28 volt. it is normal
All your videos are great. I wonder if it is possible to convert an IGBT inverter to a plasma cutter? Thank you.
@@HaseebElectronicsThanks for quick response. So it would not be possible to process the output transformer that would give a higher voltage with less current? HV start and solenoid valve activation would easily be added to an existing source.Greetings from Croatia
@@Darkoford-tools-electronics for price, is more relianle to buy cheap low cost plasma and upgrade it for more durabiliter and power. Me when im done my repair. I add 2 rectifier . Stock 60amp and 80-90% load ...after.. 100amp and 45-60% load. No heating, and extending life ...(i should not tested but module is ready to plug in) (2x 30amp +2x20amp (20 because is what i have). I wouldlike to update igbt resistor itoo by 2w ou 4w resistor dont know rhe effect. And propably add some ceramique capacitor and add 2cap on pilot arc capacitor bank.(2slot not useed)
Dont need more power machine. Just trying to get better duty cycle whitout heating or damaging componoent. Unload coponent to get better reliability
Thanks for all your videos could you send me the diagram device and pub with components liste