This video is outstandingly informative! This the first time I've seen someone modify the pulse transformer to change the output voltage of an SMPS. This video shows the depth of your expertise and the level of your experience. I wouldn't dare try such a thing. Not at this moment, but perhaps a little later. You're the undisputed champion of SMPS circuits!
@@TYGAMatt I watch DiodeGoneWild too, but I think Haseeb Electronics is a little bit more practical in showing the actual repairing process in addition to describing the schematics. Nothing wrong with DiodeGoneWild. Both channels are great.
Excellent. Your videos are great. I wish you lived near me. I have a Meanwell power supply on my 3D printer that just died. It's way too complicated for me to fix!!!!
Greetings I’m here my friend watching to your humble home channel and to give my gratitude support I notice you put extra effort love on your context that’s why it came out beautifully content channel and your knowledgeable on electronics technology I salute on your expertise keep lighting up are daily life from your work of love and may God give you health w/ur friends and lovely family 🤝✌️❤️🌎
Dr. Haseeb, Your practical and theoretical experience both are nice. Would you make a in-depth tutorial on computer ATX PSU with Active PFC ? Thanks ahead.
Excellent well done and well explained. Did you check output diode can handle the ~4 times higher current? also shouldn't you use a lower voltage / higher uF value output capacitor ?
Much more informative video. I want to know all these electronics calculations, how can i do this, pls guide me. Thank you very much. God bless you all the way.
thanks a lot if we replace zener 12 volt, then there is no working region for TL431. as TL431 VKA (voltage cathode to anode) range is upto 40 volt. so there is no need to connect 12 volt zener just Current limit resistance, optocoupler, TL431, and voltage divider resistance is a good selection to build feedback circuit
two wow that's awesome excellent video big thumbs up thanks for sharing stay blessed with good health and great happiness/safety take care to have a nice day
Hello Haseeb. I would like to find out , if you had just modified the feedback circuit withought re winding the transformer, would you only then have 12.4v @ 0.54 amps at the output?
NO, we cannot adjust output in so wide range. from 57 VDC to 12 Volt it is impossible. as at maximum input line voltage the PWM IC will switch at minimum duty cycle i.e around 4 percent. so if we adjust just feedback circuit, then the PWM ic cannot decrease more duty cycle, if we will try to adjust it, it will lead to fluctuations in output, because IC will move in RESTART mode
If we wrap 4 turns on winding we get one side 14volts ,reversing directio get 5volts but in both cases current is very low(4 wires in parallel)remain circuit is ok.perhaps this winding should before auxalary winding or another reason.hope ur answer.u r practical and theoratical expert thanks
if turns provide required voltage that means the turn ratio is good. you need to consider input power, and primary turns and wire size, might be proper magnetic field is not being generated. try sandwich winding method for primary winding. and observe core gap as well i will try to explain it practically
احسنت بارك الله بيك لستاذ محمد اشرف .. هل يمكن قياس الهيرتز لنبظة بوابة الموسفت بدون رفع الموسفت من البورد ام ان طريقة القياس بهذه الطريقة سيتلف الموسفت..!؟ وكم يجب ان تكون القراءة الطبيعية لقيمة الهيرتز..ّ؟
Yes boiling is also a good option, specially when we want to disassemble completely, if we have to disassemble partially, then best option to heat by lamp or hot air gun
Set around 200-300 degree centigrade And apply air from around 4 inches Focus to core and keep moving the core Powdered cores are much sensitive to temperature, if it gets overheat, it may loose it's magnetic properties
welcome brother i have no practical experience in fan winding, so i don't want to share something, which i don't have good practical and theory please don't mind because i always to share something, on which i have theory and practical
if you will use low ohmic value resistor in voltage divider network, it will increase power loss. second thing it will not maintain CTR in optocoupler. so regulation will not achieved properly,
I want to make a small toy car.for voltage control, what i can use?voltage control means speed control.will i use regulator or variable resistor? Actually, i will use one thing that will work as pick up.
Assalamualeykum wrt Dear brother. i hope in future you can provide video of modifying 110v-120v equipment into 220-230v usable countries and vice-versa. I'm sure a lot will appreciate without the need to incorporate a step-up/step down transformer...
Again, I want to appreciate you sir for the experiences gathered from your videos. I observed in the video that your DMM displayed 16v after the transformer was rewound and later you got 12v. Could you please help me know how you were able to get the output voltage as 12v from 16v? Thank you sir!
16 v was full duty cycle with no feedback/regulation in place. Then he created a voltage divider to take 12.4 v down to 2.5v and feed into the TL431 shunt reference regulator. That operates the optoisolator which provides feedback to the input/switching stage, thus regulating the output to approx 12.4v
Hi there, can you please make a video on how to bypass safeties and protections in ATX for another use besides computers as they can be a very good power supplies to charge batteries, make 12v fridges work as well as car air compressors. But SUPERVISORS with OVP, OCP turn SMPS off and stay useless... THANKS !!!
this is a Chinese aneng Q1 multimeter i am testing it's quality and functions, so far I have no comments about this multimeter if possible select fluke multimeter
No we cannot change the frequency, of we will change switching frequency, it will increase or decrease BMax, which will increase losses. And power transfer will not acceptable which will cause to lower efficiency Transformer core will heat up or winding my damage
In amps design First priority is transformer Then frequency And then the remaining circuit So if we play with 2nd or 3rd item The first item will effected directly
This video is outstandingly informative! This the first time I've seen someone modify the pulse transformer to change the output voltage of an SMPS. This video shows the depth of your expertise and the level of your experience. I wouldn't dare try such a thing. Not at this moment, but perhaps a little later. You're the undisputed champion of SMPS circuits!
Great comment, you are absolutely correct in your assessment!
You are welcome!
i am really thankful
please accept my best regards
It's a close contest with Diode Gone Wild I think. Both great channels packed with awesome information and schematics
@@TYGAMatt I watch DiodeGoneWild too, but I think Haseeb Electronics is a little bit more practical in showing the actual repairing process in addition to describing the schematics. Nothing wrong with DiodeGoneWild. Both channels are great.
Very informative video
Good work bhi keep it up Allah ap ko kisi ki muhtaji na de ameen
Aameen
Jazaak Allah khair dear sister
Wow, you rewind the transformer manually? 😳 Respect, Sir! Amazing! 👍
i am thankful sir. please accept my best regards
Everytime I see your video I get something new and entertained at the same time.
best regards and it is my pleasure that my efforts are helpful and my viewer gets satisfied
you are always very good practical explanation
thanks a lot. best regards
ماشاء الله الله يحفظك من كل سوء استاذي الفاضل حسيب ....biggest explain a lot of information...think you...👍❤
السلام عليكم و رحمة الله و بركاته
الله يسلمك و يسعدك. كل الاحترام
Excellent. Your videos are great.
I wish you lived near me. I have a Meanwell power supply on my 3D printer that just died. It's way too complicated for me to fix!!!!
@@HaseebElectronics wow. Thank you Sir. I will do that now.
Woew mashalllah ap to famous bndy h greatt wawa allah bless u zindabaddd ho ap duzzz duzz chaa gay o 😇
best regards and special thanks
Such a dedication, it took all day great sir, it is very hard to become an expert like you sir
special thanks and best regards
it is your greatness for appreciating my efforts to share knowledge with community
stay blessed
You are always doing good videos engineer ive learned a lot from your videos
MASHA ALLAH another awesome upload from your side, full of knowledge, thanks for sharing, stay blessed
So nice of you
Sir your experience and fastion of working is outstanding
thanks a lot bhai
Sir maine aapka har video dekhta rahata hun sabhi video bahut informative hai main ummid Karta Hun STR madule iska upar koi video banaen banae.
Walekum Salam sir Like 1 Masha Allah Always share very informative video
Ottimo, il piacere di seguire le tue video. 👍
thanks a lot
stay blessed
Walkum aslam mashaAllah excellent work bhai Allah kosh rkhy amin
Such deep knowledge and excellent way of explaining it calmly... God bless you sir!!
Good sharing ful w honestly good job 👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍🌹
Thank you so much 🙂
Great video sir, it's really helpful.
best regards and special thanks
Wonderful video dear friend, happy weekend!!!
Many thanks
You should have more views and subscriber..with your in depth understanding in electronics.you shall be success.
i am thankful for encouraging. i am just sharing my experience may be it will helpful for someone.
please accept my best regards
Greetings I’m here my friend watching to your humble home channel and to give my gratitude support I notice you put extra effort love on your context that’s why it came out beautifully content channel and your knowledgeable on electronics technology I salute on your expertise keep lighting up are daily life from your work of love and may God give you health w/ur friends and lovely family 🤝✌️❤️🌎
excelent thenks to share this informative video.
You are most welcome
جزاك الله خيرا
Thank you so much Mr Haseeb
Dr. Haseeb, Your practical and theoretical experience both are nice.
Would you make a in-depth tutorial on computer ATX PSU with Active PFC ?
Thanks ahead.
sure i am planning to start a complete detailed series on ATX with PFC
i will try to start ASP in upcoming days
MashAllah MashAllah ❤️
best regards and special thanks
alhamdulillah, Barakallohu thx for knowledge🤗
Mashallah excellent stay blessed
Thank you so much 😊
master of all power supply watching master hasseb
please accept my best regards and special thanks for a beautiful comments
Thanks for an interesting video and delicious and and
tasty full watched thanks for sharing dear 👍👍🌷🌷💗. ✍🤝👍 Ashraful
This looks soo refreshing,
Excellent well done and well explained. Did you check output diode can handle the ~4 times higher current? also shouldn't you use a lower voltage / higher uF value output capacitor ?
Lk 13 good job brother 👏👏👏👏
thanks a lot
Much more informative video. I want to know all these electronics calculations, how can i do this, pls guide me. Thank you very much. God bless you all the way.
Good job friend.really like your video Keep it up...stay connected
Greate work 👏
Very nice 👌
Why do you turned 4 wires in parallel ? Haven't you said in the begining that increasing current might damage the transformer ?
Very helpful video. More powers
best regards and special thanks
You doing good job 👍 brother you make good work video 🇺🇸👍👍👍👍👍thanks
Great video; thank you! You bypassed the zener diode. Why did you not replace it with a 12V zener diode?
thanks a lot
if we replace zener 12 volt,
then there is no working region for TL431. as TL431 VKA (voltage cathode to anode) range is upto 40 volt.
so there is no need to connect 12 volt zener
just Current limit resistance, optocoupler, TL431, and voltage divider resistance is a good selection to build feedback circuit
@@HaseebElectronics A 15v zener would protect the output from overvoltage
Good job my friend
Great informative video shared like always. Keep up the hard work, I am sure you and family is all fine and steady. Good day ahead bro.
Wow soooooo wonderful excellent video
Many many thanks
I wish you explained why you jumper zener diiode.. How to calculate the feedback resistor values etc.
two wow that's awesome excellent video big thumbs up thanks for sharing stay blessed with good health and great happiness/safety take care to have a nice day
best regards and special thanks
Very good informative video.
it is my pleasure
super excellent video 😱😱
Many many thanks
Hello Haseeb. I would like to find out , if you had just modified the feedback circuit withought re winding the transformer, would you only then have 12.4v @ 0.54 amps at the output?
NO,
we cannot adjust output in so wide range. from 57 VDC to 12 Volt it is impossible.
as at maximum input line voltage the PWM IC will switch at minimum duty cycle i.e around 4 percent. so if we adjust just feedback circuit, then the PWM ic cannot decrease more duty cycle, if we will try to adjust it, it will lead to fluctuations in output, because IC will move in RESTART mode
@@HaseebElectronics very interesting. Thanks Haseeb.
Very good and useful information thanks for sharing this knowledge to us
it is my pleasure
Very nice method Sir! Thank You Very much!
Can you do it by only changing the value of the voltage divider resistors to Tl431?
that method allows a very little range
we can bring up down 1 or 2 volts only
MashaAllah sir stay blessed always😊
best regards
If we wrap 4 turns on winding we get one side 14volts ,reversing directio get 5volts but in both cases current is very low(4 wires in parallel)remain circuit is ok.perhaps this winding should before auxalary winding or another reason.hope ur answer.u r practical and theoratical expert thanks
if turns provide required voltage
that means the turn ratio is good.
you need to consider input power, and primary turns and wire size,
might be proper magnetic field is not being generated.
try sandwich winding method for primary winding. and observe core gap as well
i will try to explain it practically
very informative sharing
thanks a lot
Can you decrease the voltage of welding inverter machine 60 to 12 volt?
احسنت بارك الله بيك لستاذ محمد اشرف ..
هل يمكن قياس الهيرتز لنبظة بوابة الموسفت بدون رفع الموسفت من البورد ام ان طريقة القياس بهذه الطريقة سيتلف الموسفت..!؟
وكم يجب ان تكون القراءة الطبيعية لقيمة الهيرتز..ّ؟
Wsalam fantastic job
Many many thanks
MashaAllah mashaAllah
Mashallah
thanks a lot
Can I use my heat gun to open the transformer? What is the temperature setting?
you can boil it in hot water 5 minutes
Yes boiling is also a good option, specially when we want to disassemble completely, if we have to disassemble partially, then best option to heat by lamp or hot air gun
@@HaseebElectronics what temperature and how many time with hot air gun?
Set around 200-300 degree centigrade
And apply air from around 4 inches
Focus to core and keep moving the core
Powdered cores are much sensitive to temperature, if it gets overheat, it may loose it's magnetic properties
@@HaseebElectronics Thank you! About boiling in hot water, could the core make rust?
View #555!
Fascinating. Thank you for sharing.
best regards
Sir please video on any ceilling fan primary and secondary winding turn
welcome brother
i have no practical experience in fan winding, so i don't want to share something, which i don't have good practical and theory
please don't mind
because i always to share something, on which i have theory and practical
Incredible!!! 👍❤️❤️
Very excellent work
thanks a lot
Firstly me on your adorable tutorial and beautiful mathod of working pin me
Mr Haseeb thanks for your explan
can you teach how can take 24v dc from 400v dc 2 amp. thanks again please very important
Masha allah brother
thanks a lot
Excellent sir
Many many thanks
please accept my best regards
@@HaseebElectronics welcome sir
What's if I use 1k & 270 ohm instead 10k & 2k7 resistors? Will it give the same Vout?
if you will use low ohmic value resistor in voltage divider network, it will increase power loss. second thing it will not maintain CTR in optocoupler. so regulation will not achieved properly,
I want to make a small toy car.for voltage control, what i can use?voltage control means speed control.will i use regulator or variable resistor?
Actually, i will use one thing that will work as pick up.
Very interesting. Thanks for sharing. like 191
Assalamualeykum wrt Dear brother. i hope in future you can provide video of modifying 110v-120v equipment into 220-230v usable countries and vice-versa. I'm sure a lot will appreciate without the need to incorporate a step-up/step down transformer...
Great upload
Walikum Salaam Janab Bhai Sahib
Bahut shukriya Zargar bhai
Again, I want to appreciate you sir for the experiences gathered from your videos.
I observed in the video that your DMM displayed 16v after the transformer was rewound and later you got 12v. Could you please help me know how you were able to get the output voltage as 12v from 16v?
Thank you sir!
16 v was full duty cycle with no feedback/regulation in place. Then he created a voltage divider to take 12.4 v down to 2.5v and feed into the TL431 shunt reference regulator. That operates the optoisolator which provides feedback to the input/switching stage, thus regulating the output to approx 12.4v
Assalamualaikum Haseeb bhai !
Bhai jan ap ka pas power supply ka diagram hoti hn , kisi bi diagram ki pdf kaha sy asani sy mil jay gi
still watching good morning
thanks a lot
Asslam O Alikum
Sir urdu ma video upload karin
urdu me video 1-2 din me aaey gi
OK thanks sir g
Thanks
best regards and special thanks
Thanks for sharing good knowledge my friend thanks welcome please
Good job bro
188 big like mashallah very helpful every video brother
Many many thanks
Nice video 👍👍👍👍
thank you, successful tx brain surgery
BEST REGARDS
Thanks..
please accept my best regards
Hello ji 🙏.. kaise ho aap 👍🙏👍
thanks a lot dear sister
i am fine
HASSED WE NEED TO KNOWN HOW TO CONECT TO THE MICROPROCESSOR WITH THE COMPUTER AND DOWLOAD THE CODES
Keep safe always
best regards dear
best wishes
Hi there, can you please make a video on how to bypass safeties and protections in ATX for another use besides computers as they can be a very good power supplies to charge batteries, make 12v fridges work as well as car air compressors. But SUPERVISORS with OVP, OCP turn SMPS off and stay useless... THANKS !!!
i want to come and work for you haseeb i want to learn from the master
👌👌👌👍
thanks a lot
Thanks for sharing your video
I need that kind of multimeter
Please help me
this is a Chinese aneng Q1 multimeter
i am testing it's quality and functions, so far I have no comments about this multimeter
if possible select fluke multimeter
@@HaseebElectronics where can I get it
And how much can it cost
@@norrismumba5096 aneng q1 is available online stores. you can also search Banggood
Nice
Please sir tell me how to identify resistor power rating no marking on it please sir I requested
on color coded resistor's wattage is identified from its physical size.
@@HaseebElectronics please make a video on it
👍
thanks a lot
like👍
best regards
Sir where is fluke meter
This multimeter is for trial and testing
Can we modify voltage output without changing transformer? If I can adjust output by changing switching frequency ,so it it possible?
No we cannot change the frequency, of we will change switching frequency, it will increase or decrease BMax, which will increase losses. And power transfer will not acceptable which will cause to lower efficiency
Transformer core will heat up or winding my damage
In amps design
First priority is transformer
Then frequency
And then the remaining circuit
So if we play with 2nd or 3rd item
The first item will effected directly
👍
best regards and special thanks