السلام علیکم و رحمۃ اللہ و برکاتہ افسوس ہے کہ آپ میرے انگلش چینل پر ویڈیو دیکھ رہے ہیں اور اس سے زیادہ افسوس ہے کہ آپ میرے اردو چینل پر ویڈیو کیوں نہیں دیکھتے ۔ جو کہ صرف میں نے پاکستانی بھائیوں کیلیے بنایا ہے youtube.com/@haseebelectronicsurdu?si=RhD5MF-q7P7k-sm1 ابھی اگر آپ پھر بھی میری ویڈیوز اردو کے بجائے میرے انگلش چینل پر دیکھیں گے اور افسوس ہو گا کوئی مشکل ہو میرا واٹس ایپ نمبر 00962-79-5608616 آپ رابطہ فرما سکتے ہیں محمد اشرف
Thanks Sir I have recently got attracted towards SMPS power supply mainly due to LED bulbs so want to concentrate on this very part at the same time get used to using the tools because of zero practical knowledge.
Hi Mr.Haseeb,your videos are AMAZING.You are a real teacher,i have learned a lot from you.i have one question.i have a SMPS and i have only 299-301 Volts at the capacitor(with 230V input voltage).what can be wrong?the driver? also i dont have any output dc power at the secondary.Thanks in advance for your reply
Hi Haseeb, thanks for continuing to educate us. I have an issue using relays to switch on smps, after a few weeks - months, the relays become unreliable and won't switch the psu off. I guess its welding contacts together, tried larger relays and rc filter, gave little improvement. Think I need a softstart, if you could teach me what it's is and give me an idea of how to implement this I would be grateful. Psu 240v 400-600 watt units, their only powering 3d printers not huge induction motors or anything. Thanks.
welcome dear in your case if its 600 watt psu, so its input inrush current is very high, which cause arcing on relay contacts. you can use TRIC, that will the best solution, and it is long life
very skilled and knowledgeable, please i have a question all the components you have tested gave continuity does this mean that all of them are short circuit ?
Hi Haseeb,your videos are amazing,i have learned a lot from you.i have one question.i have a SMPS and i have only 299-301 Volts at the capacitor(with 230V input voltage).what can be wrong?the driver.also i dont have any output dc power at the secondary.Thanks in advance for your reply
Sir thumbs up done i see your demonstration you put your meter in continnuity mode with a beef sound in the input of primary ckt then you shorted the diff parts in the primary and meter have beef sound but i cant recognized the resistance measured in the meter if its in the range of less than k ohms sir tnx
Hello. Thank you for your shairing. My SMPS circuit fuse keep blowing again and again and there are two mosfet on it. There is two zener diodes between drain-source. Two zener diodes burning at the same time. What is your suggestion please.
Very useful and instructive video. Mr. Haseeb, I am trying to repair a smps power supply. When I checked I found that IGBT was shorted after replacing and connecting the power it blow again. I checked everything, disconnected the output from IGBT, but again after connecting the power it blowed. The driver is L6561. Can you help me where the problem is.
hello, on my tig welder I blow the fuse only when I start welding. If I press the trigger, I can see the the mosfet gate voltage oscillating, but as soon as I start an arc (by putting the welding gun near grounded metal) ....then fuse blows instantly, I I have to change maybe a random 3 out the 10 mosfets......I wish I could manually choose the PWM to very low duty cycle on order to see if the error comes from a bad (too high) duty cycle
Sir thanks for information. Please tell me how to confirm if MOSFET controller/driver is bad and keeping open gate all time. Also is it possible in such case the mosfet will blown ??
Sir i have a big problem...my smps is doing good when connected in series with a 100watt bulb....even output is good...switching frequency is 15khz, there is small humming coming out of transformer...but when directly connected to mains, fuse gets blown due to short circuit...i have checked all the components, all is good...diode and mosfet is initially shorted, i have replaced it...100watt glows at around 60 watt in series.
Hi haseeb, could an SMPS controller (say a VIPER 12) be internally open causing the SM power supply not starting and showing no defect somewhere, all the rest been cheched and OK. i'm stuck with this issue. Thank you
I have a 12 v 5 A SMPS .it gives 11.39 v output..can you tell me what is the problem here.when i check the filter capacitor voltage it give 310 V instead of 324 v .
Salam sir. Battery charger cold testing...conneted meter in ohm mode high...shows open circuit. The batter charger is charging though. If the charger is ok why it charges the battery?
Hello sir i have also the same problem all the time my homemade SMPS's fuse blow up i can't understand why it's that the input emi filters causing some problem or the capacitor or the IC how can I check it ?
Mr haseeb my greetings i need your help I have battery charger 5v 2amp no output . When measuring bulk cap it is ok and no short circut it is self oscillating using mje13003 npn transistor when measuring the base no startup voltage i am measuring the startup resistor value is ok it is 5megaohm voltage exist on one side the other side of resistor no voltage
Hello sir, one doubt MOV is faster than fuse to detect spikes, then why MOV is behind fuse , why can't we install MOV first and install fuse after MOV ? Any reason behind it
Why the out put voltage of the smps still have higher frequency signal in the dc side still I try powering another high frequency power supply and the buck converter would not turn on it only turn on when I remove the power the energy in the capacitor turn the buck pwm on for some time so why is this
Nice and informative video. This video shows how much research you're doing on SMPS circuits. You show new testing methods every time. I still have a question. What do those class y capacitors do? I've always wondered.
Take a look at his video series #416 where he explains Class X & Y Capacitors (I myself have to keep rewatching so I can get the information to stick). Cheers!
Sir always in my area voltage is below 200AC As per the calculations 200 * 1.414 = 282.8DC While checking with multimeter for a second 285DC voltage showing and keep steady 245DC can you explain the reasons
Why I get a noisy sound from smps ? This because aging of electrolytic capacitor in the input section ,the two 330uf 220v capacitor ? Smps is 5years old
انڈیا والے اردو میں اپنے viewer کو سمجھا رہے ہیں اور آپ انگریزی زبان کو اردو پر ترجیح دے رہے ہیں بہت افسوس
السلام علیکم و رحمۃ اللہ و برکاتہ
افسوس ہے کہ آپ میرے انگلش چینل پر ویڈیو دیکھ رہے ہیں
اور اس سے زیادہ افسوس ہے کہ آپ میرے اردو چینل پر ویڈیو کیوں نہیں دیکھتے ۔ جو کہ صرف میں نے پاکستانی بھائیوں کیلیے بنایا ہے
youtube.com/@haseebelectronicsurdu?si=RhD5MF-q7P7k-sm1
ابھی اگر آپ پھر بھی میری ویڈیوز اردو کے بجائے میرے انگلش چینل پر دیکھیں گے اور افسوس ہو گا
کوئی مشکل ہو میرا واٹس ایپ نمبر
00962-79-5608616
آپ رابطہ فرما سکتے ہیں
محمد اشرف
Masha Allah. More than a LKG teacher. Very much informative. Thank you Sahab
Thanks and welcome
This is an amazingly thorough lesson. Many thanks Mr. Haseeb.
You are most welcome
One of the best explanations if not the best I've come across for the layman, i have subscribed, many thanks!
BEST REGARDS AND SPECIAL THANKS FOR YOUR VALUABLE WORDS
your explanation was very clear
Even i am not beginner i learn some thing from every video of you thank you a lot you are a master
You are very welcome. i am thankful for your valuable appreciating message
All your works are very excellent. Thank you very very much sir .
Thank you sir. I was able to repair my power supply with your help.
It is my pleasure 💕
Excellent information wow, very nice and so much interesting. You are my forever friend sir
Many many thanks
Smps devrelerini sayende öğreniyoruz. Çok güzel ve bilgi yüklü video olmuş. Teşekkürler .Allah cc emanet ol kardeşim .
best regards and special thanks
Walikum Salaam Bhai Saab Subha Bakher Ho
Brilliant fault finding summary. Thanks.
it is my pleasure
GOOD TICHING KARTE HO AP 👍👌👍👌👍👌👍👌👍
it is my pleasure
i am thankful for your valuable comment
Very very informative vedeo. God bless you.
thanks a lot
Thanks Sir
I have recently got attracted towards SMPS power supply mainly due to LED bulbs so want to concentrate on this very part at the same time get used to using the tools because of zero practical knowledge.
Thanks for the video and the knowledge. I always make watching your videos my hobby
Very good and useful information sir thanks for sharing this knowledge to us
it is my pleasure
i am thankful for your valuable comment
Hello,
Thank you.
Very well explained.
You are the boss
;)
You're welcome!
Excellent thanks again for sharing this informative video
it is my pleasure
i am thankful for your valuable comment
Hi sir namaskaar.
This is very informative and
useful video.thank you very much
Good night 🙏
it is my pleasure
i am thankful for your valuable comment
Awesome video dear friend, have a happy new week!
it is my pleasure
i am thankful for your valuable comment
Useful video
Very good information
I like your all videos
Thanks for share
Keep up the good work sir
Really Good video clear explanation thanks.
You're welcome!
I am watching : thanks for including my query
it is my pleasure
i am thankful for your valuable comment
Verygood explanation 👌👌👌
Informative and mind blowing keep it up bro
Thank you so much 😀
Hi Mr.Haseeb,your videos are AMAZING.You are a real teacher,i have learned a lot from you.i have one question.i have a SMPS and i have only 299-301 Volts at the capacitor(with 230V input voltage).what can be wrong?the driver?
also i dont have any output dc power at the secondary.Thanks in advance for your reply
Thanks for sharing knowgable video.
best regards
thanks for ur usual support haseeb
Always welcome
Thank You So Much dear sir Hassib
You are most welcome
Hi Haseeb, thanks for continuing to educate us.
I have an issue using relays to switch on smps, after a few weeks - months, the relays become unreliable and won't switch the psu off. I guess its welding contacts together, tried larger relays and rc filter, gave little improvement. Think I need a softstart, if you could teach me what it's is and give me an idea of how to implement this I would be grateful. Psu 240v 400-600 watt units, their only powering 3d printers not huge induction motors or anything.
Thanks.
welcome dear
in your case if its 600 watt psu, so its input inrush current is very high, which cause arcing on relay contacts.
you can use TRIC, that will the best solution, and it is long life
very skilled and knowledgeable, please i have a question all the components you have tested gave continuity does this mean that all of them are short circuit ?
another informative video thank you sir 🙏
it is my pleasure
i am thankful for your valuable comment
Hi Haseeb,your videos are amazing,i have learned a lot from you.i have one question.i have a SMPS and i have only 299-301 Volts at the capacitor(with 230V input voltage).what can be wrong?the driver.also i dont have any output dc power at the secondary.Thanks in advance for your reply
Sir thumbs up done i see your demonstration you put your meter in continnuity mode with a beef sound in the input of primary ckt then you shorted the diff parts in the primary and meter have beef sound but i cant recognized the resistance measured in the meter if its in the range of less than k ohms sir tnx
Another great video thank you.
Super explain. Thank you sir.
You are welcome
Hello. Thank you for your shairing. My SMPS circuit fuse keep blowing again and again and there are two mosfet on it. There is two zener diodes between drain-source. Two zener diodes burning at the same time. What is your suggestion please.
Thank you for these videos bro
thanks a lot
Eid mubarik Bhai
Eid mubarak to you and your family
Very useful and instructive video. Mr. Haseeb, I am trying to repair a smps power supply. When I checked I found that IGBT was shorted after replacing and connecting the power it blow again.
I checked everything, disconnected the output from IGBT, but again after connecting the power it blowed.
The driver is L6561. Can you help me where the problem is.
Awesome & tnx for sharing your insights, one question however,
How can I check an IC if it's still OK or not?
Tq
Amazing! Cheers.
thanks a lot
Very good and subscribed
thanks a lot
hello, on my tig welder I blow the fuse only when I start welding. If I press the trigger, I can see the the mosfet gate voltage oscillating, but as soon as I start an arc (by putting the welding gun near grounded metal) ....then fuse blows instantly, I I have to change maybe a random 3 out the 10 mosfets......I wish I could manually choose the PWM to very low duty cycle on order to see if the error comes from a bad (too high) duty cycle
Emeğine sağlık ustam
بارك الله فيك
Très bien 👍👋
best regards
Salut bon dimanche bonne journée :)
Sir thanks for information.
Please tell me how to confirm if MOSFET controller/driver is bad and keeping open gate all time.
Also is it possible in such case the mosfet will blown ??
Great job. 👍
it is my pleasure
i am thankful for your valuable comment
Thanks very much papa
Sir i have a big problem...my smps is doing good when connected in series with a 100watt bulb....even output is good...switching frequency is 15khz, there is small humming coming out of transformer...but when directly connected to mains, fuse gets blown due to short circuit...i have checked all the components, all is good...diode and mosfet is initially shorted, i have replaced it...100watt glows at around 60 watt in series.
amazing.thanks
best regards
Thank you so much.
You're welcome!
Hi haseeb, could an SMPS controller (say a VIPER 12) be internally open causing the SM power supply not starting and showing no defect somewhere, all the rest been cheched and OK.
i'm stuck with this issue.
Thank you
I have a 12 v 5 A SMPS .it gives 11.39 v output..can you tell me what is the problem here.when i check the filter capacitor voltage it give 310 V instead of 324 v .
USEFUL VIDIOE
best regards and special thanks
Salam sir. Battery charger cold testing...conneted meter in ohm mode high...shows open circuit. The batter charger is charging though. If the charger is ok why it charges the battery?
Great 👍
Sir can we test a shorted any smps with series lamp still lighted?
hello thank you very much . reza
it is my pleasure
i am thankful for your valuable comment
good job thanks
Welcome
Sir smps output voltage fluctuate but all components look good. How to find problem in that situation.
Hello sir i have also the same problem all the time my homemade SMPS's fuse blow up i can't understand why it's that the input emi filters causing some problem or the capacitor or the IC how can I check it ?
please check video number 406
th-cam.com/video/AHzsaOwHYY4/w-d-xo.html
I had all 4 diodes shorted.. fuse blown. The EMI coil didn't show any continuity,, burn marks on the board near MoV resistor after diode.
I have Toshiba 42rv530u the 1.8 resistor blown, I think r 850. Maybe you can solve it
Please
why input mosfet burn in spite of i use series lamp
Thank you very much
Mr haseeb my greetings i need your help
I have battery charger 5v 2amp no output . When measuring bulk cap it is ok and no short circut it is self oscillating using mje13003 npn transistor when measuring the base no startup voltage i am measuring the startup resistor value is ok it is 5megaohm voltage exist on one side the other side of resistor no voltage
Hello sir, one doubt MOV is faster than fuse to detect spikes, then why MOV is behind fuse , why can't we install MOV first and install fuse after MOV ? Any reason behind it
Why the out put voltage of the smps still have higher frequency signal in the dc side still I try powering another high frequency power supply and the buck converter would not turn on it only turn on when I remove the power the energy in the capacitor turn the buck pwm on for some time so why is this
👏👏👏👏👏👏👏👏 !!!
Circuit does the give continuity but has 200kOhm resistance. When I plug in the mcq of my room trips. Help.
Sir MIP2F2 IC pe Kaise Gate pulse check Karega uska gate Nahi
❤
thank you for subtitle Persian
most welcome
Output side shorting pl explain 5V60 amp smps please marking video
Nice and informative video. This video shows how much research you're doing on SMPS circuits. You show new testing methods every time. I still have a question. What do those class y capacitors do? I've always wondered.
Take a look at his video series #416 where he explains Class X & Y Capacitors (I myself have to keep rewatching so I can get the information to stick). Cheers!
Sir always in my area voltage is below 200AC
As per the calculations 200 * 1.414 = 282.8DC
While checking with multimeter for a second 285DC voltage showing and keep steady 245DC can you explain the reasons
Why I get a noisy sound from smps ? This because aging of electrolytic capacitor in the input section ,the two 330uf 220v capacitor ? Smps is 5years old
👌👌👌👍
it is my pleasure
i am thankful for your valuable comment
24v SMPS using LY6018 ic. No output can you give ckt or ic data please
👍
best regards
bro i am using frontech smps, but after power on within few seconds my house mcb is getting tripped off and smell is coming from smps. please help
Hello sir , I try replacing mosfet on Ebike controller, but after that it doesn’t run they is a load on it
what are the DC output voltage of this SMPS
W slam❤
Kindly send me the model no & pic of soldering station you used in this video.
it is WELLER WR3M REWORK STATION
Madi in Germany
@@HaseebElectronics thanks sir
Bit puzzled till I hear "" Diode is reverse bias"". Thanks
I have a Mecer power inverter the fuse keeps blowing
it seems that mosfets are short circuit
👍🏻👍🏻👍🏻👍🏻👍🏻👍🏻🙏🏻🙏🏻🙏🏻
it is my pleasure
i am thankful for your valuable comment
Meaning resistance should be above 600 ohm but it shows open plz?
How to remove high frequency Hizzing sound from smps (24 volt power supply, voltage stable)
Eska hindi vedio bheji ye pls 🙏🙏🙏
1-2 din mein aaey gi bhai
Telented
it is my pleasure
i am thankful for your valuable comment