In your graph there is no current in the primary during the inactivity period..... but I think it is due to the snubber network and therefore there will be induction in the secondary.... Your explanation is good.... greetings from paraguay
Thank you very much brother such a great and simple to understand flyback topology please continue few more videos on same topic related to other topologies if possible Once again thank you very much and best regards from Philippines 🇵🇭
Thanks so much for taking the time to make this video! It really helped to clear up some misconceptions I had about how a fly back converter works. I love all the videos you have devoted to talking about SMPS, as it has greatly increased my understanding of how they work and how to troubleshoot. All the best to you and take care!
The transfer of voltage or more simply the transfer of energy by the methods you mentioned is quite interesting. Multiple ways of looking at the actions of flyback converter and similar switching methods. Again enjoyed your presentation.
I wound a transformer for my 12V to 300V flyback but I wound the primary and secondary in the same direction. The start of the primary winding is connected to the 12V input. On the secondary side the start of winding is connected to ground. It seems to work fine but is this wrong?
yes it is also good. actually it needs keep secondary, during conduction of the switching device. so your method is also perfect. in this way it will work normally
Hello Mr Haseeb, thanks for the good explanations to all about electronic boards, but i am borrowing if you can explain or show me how to fix the dvd home theater DAV-DZ520K, it doesnt have 31v output and it uses str-f6168!. Thank you Sir.
Salaam. I have a question. Can you continue this circuit by adding a 555 timer to drive the transistor/mosfet and demonstrate it to us ? Just to improve our knowledge .
Flyback, the stored magnetic field in the transformer is used. The transformer is used as an Enery Storage. Forward, the stored magnetic field in the transformer is a problem (resetting required). The transformer is used as Energy transfer.
I couldn't understand the purpose of storing energy and then transfer it . Why can't it be transferred like in forward converter. Ultemately what is the benefit ? Kindly explain.
I always work on flyback smps especially ringing choke but my problem is how to calculate the frequency. How do I calculate the frequency to enable me determine the turns of the coil both at primary, secondary and axillary windings. I can't download ExcellentIT in English. Where can I find the entire ExcellentIT in English ?
Nice video Sir Please explain tny 288pg ic full circuit specially the zenner diode which is used 1st pin to source (what voltage of that zenner diode is)
Excellent. So, I can understand why one might use a flyback, when the supply source is already DC (portable battery device) and the circuit requires AC. What are the circumstances where an AC supply is rectified to DC and a flyback is used to change it back to AC, as in your example? What are the advantages of doing so? Please and thank you.
iron core transformer (which is being operated at sine wave) that can be used in any configuration. but when a phase shift is necessary then the dot function (180 degree rotation is incorporated between primary and secondary winding direction)
Love the videos and I am glad you did this one. I have been working on that ate my lunch. It is a dual voltage psu using both a top254 on one transformer, and a ucc28700 to run a fet on the other. Both chips fluctuate voltage at their vcc caps but it seems both opto are working. Ideas please?
I have designed 12W constant current flyback converter, with 12.5V/ 850mA output. (PWM IC with Fixed frequency 65kHz.) Issue is, schottky diode UF5408 is getting heated upto 85°C & checked on oscilloscope the actual frequency is 39kHz (at MOSFET gate, +duty is 15% & -duty is 85%, where as at transformr output +duty is 60% & -duty is 40% ) What must be the problem.??
@@jacksonv1ll836 if BC reading is higher, then the transistor is considered as bad transistor for more surety we can test it with transistor tester for testing the gain if the gain is lowered than it must be replaced ideally if BC resistance is higher then the collector current will decrease. thus it's gain will low
Why we don't use snubber circuit like we learn( RC) parallel with the something we want to protect i mean here mosfet instead of snubbers or clamb circuit that parallel with inductor. Imean dispense with RCD
why it's only for low energy converting? Why not to just make transformer bigger (unidirectional magnetic field, flyback) and power will increase to 1kW, for instance?
The name comes from cathode ray tube television deflection output transformer.. Horizontal deflection work similarly; switch turns on in sync with video and current starts to rise in deflection magnetics; after linearish horizontal sweep energy is stored in deflection magnetics. Then switch opens and deflection circuit oscillates through flyback diode with flyback capacitor to get the crt electron beam 'FLY' back to zero very fast. The energy of collapsing magnetic field is transferred to eg. deflection output transformer high voltage coil among other coils..then the cycle starts over to draw the next line alla the time initiated by video sync circuit.. The name is inherited there!
selâm sevgili kardeşim bir fikrimi belirtmek isterim... herşey gibi enerjide (sinyal) üç boyutlu ortamda gerçekleşmektedir! bu yüzden anlatım da üç boyuta uygun bir şekilde yapılmalıdır. yani insan, beyninde üç boyutlu hayal edebilirse veya hayal kurabilirse "öğrenme ve anlama" o zaman gerçekleşebilir !!! birbirimize anlatmak veya öğretmek istediğimizde, kalemle çizerek anlatım yolunu seçersek, üç boyutlu olarak gerçekleşen bir şeyi iki boyutlu olarak anlatmış oluruz ki bu da, ya anlaşılmaz yada ezberlenmiş olur. yani öğrenme tam olarak gerçekleşmez. veya öğrenme yanlış olur! saygılarımla
Sir, you have gifted me a 100% understanding of the snubber circuit purpose. Thank you!
it is my pleasure
you can also check video number 510 & 284 for more detailed discussion on RCD snubber
@@HaseebElectronics Sir, I certainly will view 510 & 284. Thank you
شكراً جزيلا على هذا المجهود الذي تبذله ربِ يوفقك ويسعدك . تحياتي لك من تركيا.
like mashallah so great flyback converter topology informative video thanks for sharing
Thanks and welcome
@@HaseebElectronics Mr Haseeb if you can do a DC to AC inverter with IGBT [ H Bridge] it will be great, hope to see it soon.
ALLAH razı olsun bu paylaşım için. Başarılarınızın devamını dilerim.
UA-cam hasn't suggested your videos to me in a while. Great video.
best regards and special thanks
In your graph there is no current in the primary during the inactivity period..... but I think it is due to the snubber network and therefore there will be induction in the secondary.... Your explanation is good.... greetings from paraguay
Teşekkürler efendim. Çok güzel bir video olmuş. Hayırlı günler dilerim.
Thank you very much brother such a great and simple to understand flyback topology please continue few more videos on same topic related to other topologies if possible
Once again thank you very much and best regards from Philippines 🇵🇭
Thanks so much for taking the time to make this video! It really helped to clear up some misconceptions I had about how a fly back converter works. I love all the videos you have devoted to talking about SMPS, as it has greatly increased my understanding of how they work and how to troubleshoot. All the best to you and take care!
The transfer of voltage or more simply the transfer of energy by the methods you mentioned is quite interesting.
Multiple ways of looking at the actions of flyback converter and similar switching methods. Again enjoyed your presentation.
Again the way how you explained is amazing. Thank you very much.
it is my pleasure
I want to thank you for your dedication thank you for teaching electronics
It's my pleasure
Sir, nice explanation pricis clear to understand!!!
it is my pleasure
جزاکم اللہ خیراً کثیرا
best regards
Very good and useful information sir thanks for sharing this knowledge to us
best regards
Thank you for the explanation, it was easy to understand the flyback concept. I appreciate it very much.
You are welcome!
Thanks very much for the video! I never realised the coil/transformer has opposite phase. Will you cover other topologies as well?
best regards and special thanks for your support and appreciating words
sure i am planning to cover other topologies in detail
Amazing video dear friend, have a blessed Sunday 😊
Thank you very much
Hello from Belgium.
thank you for your videos which help me a lot as an amateur electronics engineer.. See you in the next video👍🏼👋
Informative vedeo, detailed vedeo. Thank u so much God bless you
Thanks and welcome
Great knowledge sir. Very very thanks for this informative video
it is my pleasure
Thank you for the video, a very good explanation! Peace and good to You!
best regards and special thanks for your valuable words
Always brilliant always master you are wonderful thank you
I've had the same question but was afraid to ask. Have a great weekend sir!
Great job ......thanks👍👍👍👍👍
best regards
Thanks prof mashallah good UA-cam channel 👍 👍
best regards
mashallah Sir your video is very informative we get to learn a lot God bless you
Always great to see your videos
best regards
well explained thank you and ma sha allah wish you a good luck
Thanks and welcome
Excellent thanks for sharing this informative video
So nice of you
The video is very informative, thank you very much sir
Sehr gut erklärt danke
herzlich willkommen, lieber Bruder
very well said.
beste Mann .. vielen Danke bro
Thank you very much!
best regards 💕
Very well understood. 👏
Thankyou.
You're most welcome
Happy Sunday Friend Like So Much This Video
best regards
thank you very much
🙏
You're most welcome
Alaikumselam ve rahmetullah ve berekat.
Ecellent explanation
Thans a lot bro
Good video sir g
best regards
Very impressive......
Thank you so much 😀
ESallam Allikoum !Explication magnifique !la traduction automatique laisse à désirer mais cela ne m' a pas empécher de suivre .MERCI ! ALGERIE
You deserved my subscribe and like thank you
Verygood👍
I wound a transformer for my 12V to 300V flyback but I wound the primary and secondary in the same direction.
The start of the primary winding is connected to the 12V input. On the secondary side the start of winding is connected to ground.
It seems to work fine but is this wrong?
yes it is also good. actually it needs keep secondary, during conduction of the switching device.
so your method is also perfect. in this way it will work normally
وعليكم السلام ورحمة الله وبركاته بوركت يا أخي
الله يسلمك و يسعدك و يبارك في عمرك يا اخي الكريم
What is the function of feed back? Why it is installed in power suply section? Please explain.
Explain please.
ua-cam.com/video/fOtdnf75IyY/v-deo.html
Brilliant. How about the alternative topologies, their strenths and weakness' for another video?
Thank you very much
You are welcome
I believe "topology" should only be used when referring to multi-layered PCB circuitry while "circuitry" is applicable in standard schematics.
Thank you very much 100%
You're welcome!
Sir why laminate steel isn't used in flyback transformer, what will happen if in AC transformer we replace iron core with ferrite core.
Hypothetical question.
Very good
best regards and special thanks
12:03 - What information is needed and how to calculate the values of the RCD components?
kindly check video number 284
thanks for the video, can you make one, how to properly calculate snubber circuit values, i.e. capacitor and resistor values ?
hello good time. pleace talk about the resistor and capacitors of the mosfet gate drive and calculate section
Hello Mr Haseeb, thanks for the good explanations to all about electronic boards, but i am borrowing if you can explain or show me how to fix the dvd home theater DAV-DZ520K, it doesnt have 31v output and it uses str-f6168!. Thank you Sir.
Thanks
Sir how a computer ups works? .
Please make a video about that.
With repairing tips.its system ic
Is programmable?
What happens when the secondary winding capacitor is fully charged with the magnetic energy stored in the primary winding?
Salaam. I have a question. Can you continue this circuit by adding a 555 timer to drive the transistor/mosfet and demonstrate it to us ? Just to improve our knowledge .
God Bless
Thanks
Always welcome
God bless you and your family ❤️
Flyback, the stored magnetic field in the transformer is used. The transformer is used as an Enery Storage.
Forward, the stored magnetic field in the transformer is a problem (resetting required). The transformer is used as Energy transfer.
Hello sir,l would like to ask on how to identify dry joints in smps
السلام عليك أخي بارك الله فيك.....عندي شاحينة بطارية....r.c.d أحترق كيف أعرف قيمتها?
I can't find your video tutorial on half bridge and full bridge converter kindly make it available
I couldn't understand the purpose of storing energy and then transfer it . Why can't it be transferred like in forward converter. Ultemately what is the benefit ? Kindly explain.
Very nice information sharing. Thank you sir. Please sir explain ne 555 ic function.
I always work on flyback smps especially ringing choke but my problem is how to calculate the frequency. How do I calculate the frequency to enable me determine the turns of the coil both at primary, secondary and axillary windings. I can't download ExcellentIT in English. Where can I find the entire ExcellentIT in English ?
Nice video Sir
Please explain tny 288pg ic full circuit specially the zenner diode which is used 1st pin to source (what voltage of that zenner diode is)
Excellent. So, I can understand why one might use a flyback, when the supply source is already DC (portable battery device) and the circuit requires AC. What are the circumstances where an AC supply is rectified to DC and a flyback is used to change it back to AC, as in your example? What are the advantages of doing so? Please and thank you.
friend can u show a link on ur tutorial on how to make smps winding . takes for the good work u are doing here
👍👏👏👋👋
most welcome
👌👌👌👍
best regards
👍👍👍👍👍
best regards
Thanks sir
most welcome bhai
is iron transformer same as flyback?
iron core transformer (which is being operated at sine wave) that can be used in any configuration.
but when a phase shift is necessary then the dot function (180 degree rotation is incorporated between primary and secondary winding direction)
Sir please discuss flyback transformer calculations
Great! Can you explain half bridge the same way?
👌👌
👍
✋
best regards
Kindly explain more on unidirection and bidirection
❤
Love the videos and I am glad you did this one. I have been working on that ate my lunch. It is a dual voltage psu using both a top254 on one transformer, and a ucc28700 to run a fet on the other. Both chips fluctuate voltage at their vcc caps but it seems both opto are working. Ideas please?
Can u please explain LLC topology with same deep information?
good video as always teacher can explain how the UC3854N circuit works
I have designed 12W constant current flyback converter, with 12.5V/ 850mA output. (PWM IC with Fixed frequency 65kHz.)
Issue is, schottky diode UF5408 is getting heated upto 85°C & checked on oscilloscope the actual frequency is 39kHz (at MOSFET gate, +duty is 15% & -duty is 85%, where as at transformr output +duty is 60% & -duty is 40% )
What must be the problem.??
What happen when there's a leak on transistor?
the transistor leakage causes to dissipate more heat
@@HaseebElectronics could there be a stable output if there's a leak?
If BC ( Base Collector)value is more than BE using diode test, will that be considered a leak?
@@jacksonv1ll836 if BC reading is higher, then the transistor is considered as bad transistor
for more surety we can test it with transistor tester for testing the gain
if the gain is lowered than it must be replaced
ideally if BC resistance is higher
then the collector current will decrease. thus it's gain will low
sir can u clarify how to calculate RSD value of a circuit
👌💐💯😊
it is my pleasure
Why we don't use snubber circuit like we learn( RC) parallel with the something we want to protect i mean here mosfet instead of snubbers or clamb circuit that parallel with inductor.
Imean dispense with RCD
Hello mister Haseeb. Can you make a video teaching us how to read the code from varistors, NTC, PTC and VDR. Thanks in advance. Andy (Belgium)
Sir unidirectional mean ? just explain in few words....
why it's only for low energy converting? Why not to just make transformer bigger (unidirectional magnetic field, flyback) and power will increase to 1kW, for instance?
Mashallah
best regards
Why FLY BACK? What flies? And what goes back? Surely a better name would be UseCollapsingField UCF SMPS.
haha
awesome
but it is named from someone else
actually it transfers energy when the magnetic flux flies back during off period
You know how a swing flies back at you after you push it and it reverse it motion back to you?
The name comes from cathode ray tube television deflection output transformer.. Horizontal deflection work similarly; switch turns on in sync with video and current starts to rise in deflection magnetics; after linearish horizontal sweep energy is stored in deflection magnetics. Then switch opens and deflection circuit oscillates through flyback diode with flyback capacitor to get the crt electron beam 'FLY' back to zero very fast. The energy of collapsing magnetic field is transferred to eg. deflection output transformer high voltage coil among other coils..then the cycle starts over to draw the next line alla the time initiated by video sync circuit.. The name is inherited there!
AOA. why do u have not atx?, used old scrap from market, why do u not visit scrap market atx? dear.
no problem dear brother. i will arrange it soon
selâm sevgili kardeşim
bir fikrimi belirtmek isterim...
herşey gibi enerjide (sinyal) üç boyutlu ortamda gerçekleşmektedir! bu yüzden anlatım da üç boyuta uygun bir şekilde yapılmalıdır. yani insan, beyninde üç boyutlu hayal edebilirse veya hayal kurabilirse "öğrenme ve anlama" o zaman gerçekleşebilir !!! birbirimize anlatmak veya öğretmek istediğimizde, kalemle çizerek anlatım yolunu seçersek, üç boyutlu olarak gerçekleşen bir şeyi iki boyutlu olarak anlatmış oluruz ki bu da, ya anlaşılmaz yada ezberlenmiş olur. yani öğrenme tam olarak gerçekleşmez. veya öğrenme yanlış olur!
saygılarımla
have a anice day good evening
best regards
I make liké without discuss Big thanks
please accept my best regards and special thanks
plz make a repair atx
okay brother
i will arrange it