@@HaseebElectronics respected sir if it will be convenient for you so make video on buck converter using ic 3843 and and make the buck converter in video and explain about it as well that because there are no... Of youtubers who made video about buck converter and boost converter but they don't explain. Only you who make and explain about anything so it's my dribs and drabs to make video and make buck converter or boost converter and explain please
Thanks professor Haseeb. I've just fixed a SMPS, found an open resistor that was not providing VCC to TL494. Replaced it with another 1.5MR and it's now working as it should. Before finding the resistor I inspected MOSFETS, output diodes, input circuit. Kudos from Brazil.
Thank you sir, May ALLAH reward you, I am from egypt. I learned a lot from your videos, even though I can't fix my smps yet . You are very informative and your skills are very educating. Thanks a lot. Jazak ALLAHU KHAIRAN
Thank you! I've been missing your longer videos, and this one is really well done. You're the best SMPS teacher on TH-cam. Enjoy another cup of coffee sir, you deserve it!
I viewed the video and i would like to also share that with the 26 PSU of this kind that tried to fix, when some did not start, i very often found the low value resistors (R43 /R47) driving the base of the MJE13009 being open. When observing short circuit, those MJE were short. Sometimes also when one of the MJE heats, checking the Zener 33v (D3 /D4) in parallel with C1815 transistors revealed faulty. Happy to bring some information to this magnificient video done by our Master. Salam Aleikum.
Thanks for valuable comment. I was struggling repairing three power supplies. your comment helped me a lot to fix them. each one had one of mentioned issues. thanks.
Bu videoda şunu iyice anladım ki devreden elektrik bir yerlerden bir yerlere sürekli ileri geri akıyor. Bir yerde dolup bir yerde boşalıyor. Senin eğitimlerinden önce sadec bir yönde akıp geçen bir şey zannederdim. Ama şimdilik içerde ileri geri döngüler yapan, farklı dalga boylarında değişen bir çok süreç olduğunu biraz anladım. Öğreniyorum sayende.
Thank you very much Sir. At last, with your help, I could fix my damaged SMPS. It took me some time but I am happy that I could do on my own. Thank you once again.
This is a great video and does give one a more understanding how this works, I have an issue with my S-360-12 12volt/30A and I can not find the issue, the VCC pin on the IC only have 8.4volt where it should be 20volt the main output voltage is only 4.9 - 5.1 volt, I have checked and replaced all the large and small Electrolytic Capacitors, also tested all Transistors and diodes. I'm old school and used linear powers supplies and some what new to SMPS. Thanks for your video keep it up..
Thank you for the video sir! I don't understand what you said about the low voltage driver transistors at 53:00. You said those transistors are turned off because they pulled-up, and they begin to conduct when the IC connects their base to the ground. But this not how NPN transistros work.
Small missunderstanding of startup. Actually , this circuit starts to self oscillate at the beginning since you have tertiary small winding with positive feedback. If you'd disconnect secondary side of small transformer and completely disable SMPS ic , two power transistors , small transformer and main transformer would form half-bridge oscillator with 50:50 duty cycle. So basically , while no power to the secondary side , primary forms so called blocking oscillator while secondary voltage builds up and SMPS ic takes over. Anyway, keep up the good work. Cheers !
Sir please please also include videos for us beginner in electronics like naming components, designing and understanding circuit diagrams and protection otherwise am a follower of your works sir
Profound and easy to follow explanation of how a switch mode PSU is working. Could be a little faster for me but nice anyway 🙂 You know 'diodegonewild'? He is also doing very could electronic videos with lots of PSU explanation and fault repair! Most common fails are electrolytic caps and semiconductors.
Thanks sir to making vedio for us and sir upload one page and also upload another page and aslo discuss copper winding how we cauculate copper winding which is used in this ckt.....
bhai i am sorry for that it was a file compression error i fixed it and now you can download the full diagram please check and reply. if still some problem send whatsapp 00962-79-1161084. i will send directly
Sir can you please tell me the purpose of the D4 (1N4752) 33v zener connected from emitter to collector of C1815 because in many smps these diodes are just 1n4148
Thank you so mach for your very informativ video! I like your works! :) Please, upload the circuit diagramms, because the old links not work! Thank you so much, GodBless!
best regards and special thanks for pointing out the problem i corrected it. Download 300W TL494 based Half Bridge SMPS circuit diagram drive.google.com/file/d/1E9vGs7ZRh3J_hGGDziacPMtZq2HfTNSW/view?usp=sharing bit.ly/3y9RJ4g
@@HaseebElectronics Thank you! That's good! This link works at this moment. The diagram will be a good starting point for this type SMPS, I put this draw in a good place!... (In the diagram, if I think better, the TR3 and the TR4 are the same ?)
Dear Sir, Can you please upload all the circuit diagrams explained by you in this video? I am working on this circuit since last 5 months, but I am not getting this working properly. I have one question. You have connected an AC signal via switch to in-between of filter capacitor and by pass the bridge. if we close the switch direct ac will be applied. Is it going to work? If yes, how?
The one i was using to study, went up in smoke. Literally! Near the chip it developed like a plasma arc. (High voltage DC I imagine) The whole circuit burned up caught on fire right on my bench.
Thank you sir for the detailed tutorial you have given. Can you please send us schematic diagram for the SMPS because we don't get from the supplier of these SMPS.
Dear sir, I regularly watch your videos and these are really knowledgeable . I an desperately waiting for some video on LNK6666e ic used in SMPS. Though it looks so imple in circuit yet difficult to repair. I tired to fix it, checked all resistances startup capacitor and even changed the IC but not able to get primary driver circuit ok. Kindly make some video on it. Thanks
Sir, Excellent explanations as always. Thank you for educating us in such details. A few doubts if you please bother to clarify. 1. Why is a driver transfer required? Is the output from pin 8 & 11 insufficient to drive the MJE13009 transistors? Also the roles of the 2SC1815 transistors. 2. If you could explain the winding details (turns, direction and thickness) of both the transformers, ie the main and the driver transformer please. 3. If you could show us the waveforms at different stages as shown on a oscilloscope. Request do a video on the above if is not much of a problem. Thanking once again.
Thank you sir for all the lessons you give us. Can you explain to me how can I operate an electronic welding machine (converter) using 320v / 10A DC solar panels knowing that there is the obstacle of the safe start with the thermistor.?
Hi, very helpful video and lovely explanation. I am trying to use this circuit to generate high voltage of 1.5kV by modifying the main transformer to a step up transformer and then rectifying the output. In open loop the circuit works well but as soon as I give the feedback to pin 1 of TL494, the output ripple becomes 30%. When observed closely I found that TL 494 is generating pulses for 20msec (at 40kHz) and off for 40msec. Can you help please.
Great video!! I've learned more about PSU electronics from your videos than any other resource! I have a RIDGID battery charger I'm trying to fix. Your videos, I think, will make it possible that I can understand and repair it. What application did you use to produce this schematic?
Hi Hasseb you ar the best teacher with this videos!, now i have a heating problem with a intelligent car battery charger, with 2 Mosfets in push pull configuration...the mosfet connected to groun heating too much very fast, the other one is cold...you mommented that issue with the resonant capacitor (poliester), but i check that with multimeter and its ok (in uf) what do you think? is posibble the capacitor was ok in uf but damage in ESR? anothr circundant components are ok.
thanks a lot dear if the series coupling capacitor is OK then please check the gate drive components for that mosfet. specially the Pull-Down Resistor (gate discharging resistor) or swap the MOSFTEs to verify the mosftes also verify output side rectifiers. sometimes the output rectifier also gives a reverse-load on mosfet
@@HaseebElectronics Wen you recomend checke the coupling capacitor, the over heating is in both TR? or like in this case only the second one connected to ground?, i replace both mosfets because are damages, in shorts...the aledanious componets near gate are ok...or..maybe looks like ok.In this case, is possible to replace the primary coil ok transformer with a bulb lamp? to check the primay side?
Thanks a lot for your explanation.. If I'm only getting 7.5 volts at auxillary voltage, what can it mean? Also output voltage is low and not affected by adjustment of the potentiometer
most welcome there are many possible reasons 1, might be one mosfet, its driving circuit, pulse transformer drive side, 2. might be one section of the ic is not working 3. might be coupling capacitor is devalued 4. if there is RCD snubber circuit, check the snubber diode
Sir You are very informative i learn a lot from you,you are good teacher. I have one question? I have smps from forklift battery charger this smps is rated at 400v-480vac input and output 80vdc its 3 phase input. is it possible to hack this circuit to work in single phase mode in 220v input. Its high current smps 180Amps at 80vdc. Thank you for your lessons
Thank u mr haseeb I have several of smps model s-360-12 volt 30A Chinese model And i repaired all of them Now working perfectly There r a very differences between their diagrams Some of the have another transistor c1815 Which i traced it is used for short circuit detection But as soon as i short output intentionally the power transistors burns out And some has not this extra transistor. Would you please help me to add short circuit protection to it .for your info i could say that there is holes on the board for some component made for modifications like short circuit protection by making pin 4 of the ic to go high when short is occured. You r perfect And good man and instructor
Please make a practical video, card main itni sari lines ko Dekh ke samajh nhi aata kon kha jud rha hai , please ek video aisa banaiye jisme har component Ka PCB ke dono taraf dikha ke bataiye kon kaise aur q Juda hai.. hame aapke videos Ka wait rahega
Thank you sir great explanation for again and I have send you a message to make a video on it and you did it thank you very much
it is my pleasure
@@HaseebElectronics respected sir if it will be convenient for you so make video on buck converter using ic 3843 and and make the buck converter in video and explain about it as well that because there are no... Of youtubers who made video about buck converter and boost converter but they don't explain. Only you who make and explain about anything so it's my dribs and drabs to make video and make buck converter or boost converter and explain please
Love from india
Please reply
yes brother I already replied your comment
I will do it soon
Thanks professor Haseeb. I've just fixed a SMPS, found an open resistor that was not providing VCC to TL494. Replaced it with another 1.5MR and it's now working as it should. Before finding the resistor I inspected MOSFETS, output diodes, input circuit. Kudos from Brazil.
Thank you sir, May ALLAH reward you, I am from egypt. I learned a lot from your videos, even though I can't fix my smps yet . You are very informative and your skills are very educating. Thanks a lot. Jazak ALLAHU KHAIRAN
the explanation of the symptoms is very good. nice work
Thanks for your encouraging words 💕
Thank you! I've been missing your longer videos, and this one is really well done. You're the best SMPS teacher on TH-cam. Enjoy another cup of coffee sir, you deserve it!
special thanks and best wishes for your valuable words for my efforts
stay blessed
Thank you. Your videos have helped me repair a SMPS I have been wrestling with for some time. Your efforts are much appreciated.
Good day my brother! I admire your unselfish devotion in sharing your knowledge. Like so many others, I learned a lot from you. 🙏🤛🇵🇭
your comment is really a valuable asset for me
i am thankful
I viewed the video and i would like to also share that with the 26 PSU of this kind that tried to fix, when some did not start, i very often found the low value resistors (R43 /R47) driving the base of the MJE13009 being open. When observing short circuit, those MJE were short. Sometimes also when one of the MJE heats, checking the Zener 33v (D3 /D4) in parallel with C1815 transistors revealed faulty. Happy to bring some information to this magnificient video done by our Master. Salam Aleikum.
Thanks for valuable comment. I was struggling repairing three power supplies. your comment helped me a lot to fix them. each one had one of mentioned issues. thanks.
Very happy to help@@shamshirian
Bu videoda şunu iyice anladım ki devreden elektrik bir yerlerden bir yerlere sürekli ileri geri akıyor. Bir yerde dolup bir yerde boşalıyor. Senin eğitimlerinden önce sadec bir yönde akıp geçen bir şey zannederdim. Ama şimdilik içerde ileri geri döngüler yapan, farklı dalga boylarında değişen bir çok süreç olduğunu biraz anladım. Öğreniyorum sayende.
im sri lanka ,so really understanding your teaching and thank you sir
You are most welcome
It’s a wonderful calm step by step explanation.your delivery method is very detail and practical. You are a great teacher . Keep it up
This is a baddly needed teaching course, thank you very much!
You're very welcome!
it is my pleasure
Thank you for your patience and hard work .Greetings from India .
best regards and special thanks
Thank you very much Sir. At last, with your help, I could fix my damaged SMPS. It took me some time but I am happy that I could do on my own. Thank you once again.
Sir ...you are expaling in Doctors...style...thanks....
Thanks and welcome
Thank you so much sir....
You always put so much of hardwork for we people.
جزاك اللهُ خيراً
very generous gentleman, thank you a lot sir for your invaluable knowledge sharing..
Awesome video dear friend, have a happy Friday!!!
thanks a lot dear friend
Very good and useful information sir thanks for sharing this knowledge to us
it is my pleasure
Thank you very much sir..........it was a great lecture..........wa Alaikum salaam
So nice of you
Very nice video, very good work FROM GREECE
This is a great video and does give one a more understanding how this works, I have an issue with my S-360-12 12volt/30A and I can not find the issue, the VCC pin on the IC only have 8.4volt where it should be 20volt the main output voltage is only 4.9 - 5.1 volt, I have checked and replaced all the large and small Electrolytic Capacitors, also tested all Transistors and diodes. I'm old school and used linear powers supplies and some what new to SMPS. Thanks for your video keep it up..
wow so beautifully explained...its very informative...😊
im sri lanka ,thank sir great explanation
best regards
Walkum aslam bhai mashaAllah great work juma Mubarak
جزاك اللهُ خيراً
Wa alaikum salam wr wb I ndonesia menyimak, semoga sll sehat sukses dan Allaah selalu melindunginya aamiin
selamat datang dan terima kasih khusus atas komentar Anda yang berharga
100 % genuine information 🙏
Thanks and welcome
Amazing Vid as Always Very Well Explained You are the Best Thanks For Sharing
special thanks and best regards
Thank you, excellent demonstration of your extensive knowledge, is wonderful.
I like this kind of video.circuit explain with pdf.It's very good.
it is my pleasure
Great work... you and Diodegonewild are neck and neck !
best regards and special thanks for your encouraging words.
on this sir I call you boss. may God reward you abundantly thank you sir
So nice of you
i am thankful for your valuable comment
Sir, Namaste... Very Good Explanation Sir... with Regards. Sreekanth.K- Hyderabad.
Thanks and welcome
Very informative. Thank you very much for sharing your knowledge and skill. 👍👍👍
Salam brother i Like tutorials❤️👍
Jazakallahu Khayran, it was very useful
best regards
@@HaseebElectronics can I use just one 7500 to drive two SMPS
Shukriya Maestro. God bless you. I am drinking coffee aswell
wow
that is awesome
@@HaseebElectronics Can you explain TSM 104 Maestro ? 🙏
Such a great detailed informative video once again thank you very much brother
Best regards from Philippines 🇵🇭
جزاك اللهُ خيراً
Salam M Haseeb, very informative. Lots of these devices fail and we have hard time to know why. Thanks for sharing & Salam Aleikum.
وعليكم السلام ورحمة الله وبركاته
للہ الحمد والشکر
it is my pleasure that my efforts are helping
It is very wealthy with information that we have to view it several times
Como de costumbre , tus vídeos mostrando un gran profesionalismo , un abrazo , Muchas Gracias !!!!! 👌👌👌👍👍👍
Estoy agradecido por tu valioso comentario
@@HaseebElectronics
Te lo mereces !!!! 👍👍👍👍
Beautiful explain. Please sir explain PFC circuit basic method.
sure i will try my best to explain it as soon as possible
Simply excellent!!! My humble thanks. Everything explained. 👍👍👍👍
special thanks
Thank you very much brother. It was very helpful and explained good and detail. Thanks again.
best regards
it is my pleasure
Thnx my dear brother 🙏 ❤ 💙
Please hindi urdu me jarur bnaye is video ko
Hindi translation
yes brother I recorded in Urdu language
ye 2-3 din mein mere Urdu channel
Haseeb Electronics Urdu
per upload ho gi
Walkium aslam
Zabrdast sharing
وعليكم السلام ورحمة الله وبركاته
Thank you for the video sir! I don't understand what you said about the low voltage driver transistors at 53:00. You said those transistors are turned off because they pulled-up, and they begin to conduct when the IC connects their base to the ground. But this not how NPN transistros work.
Good tiching karte hai 👌👍👍👍👌👌👌👍👍
thanks bhai
Thanks for this video from the core of heart. You fulfilled my request .
Most welcome 😊
Wonderful understanding about SMPS.
thanks a lot for your encouraging comment
stay blessed
Thank you for sharing your knowledge. I learnt a lot from your videos.
it is my pleasure
Small missunderstanding of startup. Actually , this circuit starts to self oscillate at the beginning since you have tertiary small winding with positive feedback. If you'd disconnect secondary side of small transformer and completely disable SMPS ic , two power transistors , small transformer and main transformer would form half-bridge oscillator with 50:50 duty cycle. So basically , while no power to the secondary side , primary forms so called blocking oscillator while secondary voltage builds up and SMPS ic takes over.
Anyway, keep up the good work. Cheers !
Good Morning and special thanks for your valuable explanation.
please except my best regards and special thanks
No problem. My older and more experienced colleague showed me that. I was very suprised. Regards.
Thank you so much for this information, and the schematic diagram.
Ty sifu. May Allah bless you.
Thankyou for your wonderfull información..Best regardd
So nice of you
جزاک اللہ خیراً کثیرا
it is my pleasure
Gracias por sus videos, muy profesional y didacticos, agradecer que todos sus videos puedan traer su traduccion en español, saludos
i like this power troublesooting clive tech. thank you.
You are welcome
Sir please please also include videos for us beginner in electronics like naming components, designing and understanding circuit diagrams and protection otherwise am a follower of your works sir
Profound and easy to follow explanation of how a switch mode PSU is working. Could be a little faster for me but nice anyway 🙂 You know 'diodegonewild'? He is also doing very could electronic videos with lots of PSU explanation and fault repair! Most common fails are electrolytic caps and semiconductors.
Thank you, your sharing is very helpful.
Thanks sir to making vedio for us and sir upload one page and also upload another page and aslo discuss copper winding how we cauculate copper winding which is used in this ckt.....
bhai i am sorry for that
it was a file compression error
i fixed it and now you can download the full diagram
please check and reply. if still some problem send whatsapp 00962-79-1161084. i will send directly
bit.ly/3y9RJ4g
@@HaseebElectronics ok sir I downloaded all page's thanks a lot sir .... ❤️
that is great 👍
Thank you so much,great video
best regards and special thanks
Excellent job!
best regards
Thank you, you do a great job! Question, what is the need to use, SW1, I don’t understand why ac is redirected between C5 and C6?
thank you thank you thank you a lot you are genius
thanks a lot
Good Work Sir, God bless u
thanks a lot
Always watching sir
it si my pleasure
Sir can you please tell me the purpose of the D4 (1N4752) 33v zener connected from emitter to collector of C1815 because in many smps these diodes are just 1n4148
Super details .Thank you for video
So nice of you
Wonderful 👍
best regards
excellent analysis.amazing video
it is my pleasure
Sir, Excellent
most welcome der brother
Thank you so mach for your very informativ video! I like your works! :) Please, upload the circuit diagramms, because the old links not work! Thank you so much, GodBless!
best regards and special thanks for pointing out the problem
i corrected it.
Download 300W TL494 based Half Bridge SMPS circuit diagram
drive.google.com/file/d/1E9vGs7ZRh3J_hGGDziacPMtZq2HfTNSW/view?usp=sharing
bit.ly/3y9RJ4g
@@HaseebElectronics Thank you! That's good! This link works at this moment.
The diagram will be a good starting point for this type SMPS, I put this draw in a good place!...
(In the diagram, if I think better, the TR3 and the TR4 are the same ?)
Dear Sir, Can you please upload all the circuit diagrams explained by you in this video? I am working on this circuit since last 5 months, but I am not getting this working properly.
I have one question. You have connected an AC signal via switch to in-between of filter capacitor and by pass the bridge. if we close the switch direct ac will be applied. Is it going to work? If yes, how?
The one i was using to study, went up in smoke. Literally!
Near the chip it developed like a plasma arc. (High voltage DC I imagine)
The whole circuit burned up caught on fire right on my bench.
Shukriya Maestro
thanks a lot
very clear explanation. can you explain separate video of flip flop and error amplifier circuit function
Hello sir initially the 2 power switches are start without chip control and after are taking controled by tl494?
Thank you sir for the detailed tutorial you have given. Can you please send us schematic diagram for the SMPS because we don't get from the supplier of these SMPS.
Check description of the video
there is link for its diagram
bit.ly/3y9RJ4g
Dear sir, I regularly watch your videos and these are really knowledgeable . I an desperately waiting for some video on LNK6666e ic used in SMPS. Though it looks so imple in circuit yet difficult to repair. I tired to fix it, checked all resistances startup capacitor and even changed the IC but not able to get primary driver circuit ok. Kindly make some video on it. Thanks
Sir, Excellent explanations as always. Thank you for educating us in such details.
A few doubts if you please bother to clarify.
1. Why is a driver transfer required? Is the output from pin 8 & 11 insufficient to drive the MJE13009 transistors? Also the roles of the 2SC1815 transistors.
2. If you could explain the winding details (turns, direction and thickness) of both the transformers, ie the main and the driver transformer please.
3. If you could show us the waveforms at different stages as shown on a oscilloscope.
Request do a video on the above if is not much of a problem.
Thanking once again.
Thank you very much sir. Imprumant my knolage.please send me your drowing. In this lesson .thank you 🙏🙏🙏
You are most welcome
link is in video description
or you can download using this link bit.ly/3y9RJ4g
Thank you sir for all the lessons you give us. Can you explain to me how can I operate an electronic welding machine (converter) using 320v / 10A DC solar panels knowing that there is the obstacle of the safe start with the thermistor.?
Hi, very helpful video and lovely explanation. I am trying to use this circuit to generate high voltage of 1.5kV by modifying the main transformer to a step up transformer and then rectifying the output. In open loop the circuit works well but as soon as I give the feedback to pin 1 of TL494, the output ripple becomes 30%. When observed closely I found that TL 494 is generating pulses for 20msec (at 40kHz) and off for 40msec. Can you help please.
Good 👍👋👋
thanks a lot dear friend
Great video!! I've learned more about PSU electronics from your videos than any other resource! I have a RIDGID battery charger I'm trying to fix. Your videos, I think, will make it possible that I can understand and repair it.
What application did you use to produce this schematic?
Veri good Veri good Bahut Khoob
thanks a lot
Hi Hasseb you ar the best teacher with this videos!, now i have a heating problem with a intelligent car battery charger, with 2 Mosfets in push pull configuration...the mosfet connected to groun heating too much very fast, the other one is cold...you mommented that issue with the resonant capacitor (poliester), but i check that with multimeter and its ok (in uf) what do you think? is posibble the capacitor was ok in uf but damage in ESR? anothr circundant components are ok.
thanks a lot dear
if the series coupling capacitor is OK
then please check the gate drive components for that mosfet. specially the Pull-Down Resistor (gate discharging resistor)
or swap the MOSFTEs to verify the mosftes
also verify output side rectifiers. sometimes the output rectifier also gives a reverse-load on mosfet
@@HaseebElectronics Wen you recomend checke the coupling capacitor, the over heating is in both TR? or like in this case only the second one connected to ground?, i replace both mosfets because are damages, in shorts...the aledanious componets near gate are ok...or..maybe looks like ok.In this case, is possible to replace the primary coil ok transformer with a bulb lamp? to check the primay side?
nice job dear brother
جزاك اللهُ خيراً
Thank you very much sir
best regards
Thanks a lot for your explanation..
If I'm only getting 7.5 volts at auxillary voltage, what can it mean? Also output voltage is low and not affected by adjustment of the potentiometer
most welcome
there are many possible reasons
1, might be one mosfet, its driving circuit, pulse transformer drive side,
2. might be one section of the ic is not working
3. might be coupling capacitor is devalued
4. if there is RCD snubber circuit, check the snubber diode
Nice video Sir
Please make some videos on inverter ac pcb
Beautiful vlog ❤
thanks a lot
Very good...
Thks, friend!
Sir You are very informative i learn a lot from you,you are good teacher.
I have one question?
I have smps from forklift battery charger this smps is rated at 400v-480vac input and output 80vdc its 3 phase input.
is it possible to hack this circuit to work in single phase mode in 220v input.
Its high current smps 180Amps at 80vdc.
Thank you for your lessons
Thank u mr haseeb
I have several of smps model s-360-12 volt 30A
Chinese model
And i repaired all of them
Now working perfectly
There r a very differences between their diagrams
Some of the have another transistor c1815
Which i traced it is used for short circuit detection
But as soon as i short output intentionally the power transistors burns out
And some has not this extra transistor. Would you please help me to add short circuit protection to it .for your info i could say that there is holes on the board for some component made for modifications like short circuit protection by making pin 4 of the ic to go high when short is occured.
You r perfect
And good man and instructor
Waiting in urdu language ,,, jazakallahu khaira ,,,,, 👍
yes it will come very soon
Very useful video.
I have a question, describe about bias voltage with calculation.
Please make a practical video, card main itni sari lines ko Dekh ke samajh nhi aata kon kha jud rha hai , please ek video aisa banaiye jisme har component Ka PCB ke dono taraf dikha ke bataiye kon kaise aur q Juda hai.. hame aapke videos Ka wait rahega