{284} RCD SNUBBER Circuit | What is Snubber Circuit in SMPS and How to Calculate

[@burhanuddin127]

You know why your channel is so underrated? Its because you explain so complicated topics that most of the people are not able to understand it, but in reality your channel is really real gold!

[@HaseebElectronics]

please accept my best regards and special thanks for your golden words

[@HaseebElectronics]

actually my most of the videos are questions from my viewers I take care for their questions I have still thousands of pending questions so far which are to be addressed and their answer is still not available at Google or KZbin. if there is something that is not satisfactory

[@SenthilKumar-ih8gt]

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Kindly share your contact number

[@olaleyejoshua949]

U are an experienced professional teacher. What u are doing is a legacy. Pls, kp it up.Thank u, sir.

[@HaseebElectronics]

it is my pleasure. i am just sharing my experience, so that it may be helpful for someone please accept my best regards for your valuable feedback

[@فؤادالزعبي-د2و]

The info you offered i was searching for them so many years, thank you for sharing your knowledge, really appreciate

[@HaseebElectronics]

Thanks a lot for your valuable words 💞

[@kasimahmed1912]

جزاك الله خيرا وزادك علما وعافية

[@ministeriomundialliberando8403]

I would dare to say this is the best explanation about this topic i've ever studied.

[@MarineElectrical]

This is probably the best explanation of snubber circuit! Thank You!

[@HaseebElectronics]

thanks a lot

[@nickgama1594]

You have explained the snubber circuit very well and also shows how to calculate the snubber cap and resistor. You can improve the rating by reducing many repetitions👍👍👍👍. This will make it lot more watchable.

[@MdRubel-rz8nl]

Assalamualikum boss, Alhamdulillah for present a verry useful lesson.

[@shekharvartak1306]

Nice video sir, I was in confusion about snubber ckt.but now my total ideas r cleared.you are having proper knowledge of electronics.you studied hard for this.God bless you.

[@HaseebElectronics]

best regards and special thanks it is my pleasure that my efforts are helpful for my viewers

[@rainbow0203]

Great Explanation Sir. Such kind of video is very very helpful for me.

[@rahulpatelgujratahmedabad3497]

Good tiching karte hai 👌👍👍👍👌👌👌👍👍

[@HaseebElectronics]

thanks a lot

[@ArjanvsTheWorld]

Super diy video Haseeb.

[@HaseebElectronics]

best regards and special thanks

[@mohammadhasanshokoohi7150]

I wish u were my teacher at the university. AWSOME, thank you.

[@HaseebElectronics]

best regards

[@chinnarao326]

Resp Sir! Dhanyavaadh Sir. -- ChinnaRao Paderu Andhrapradesh

[@TYGAMatt]

The best explination on the Internet. Super helpful.

[@HaseebElectronics]

best regards

[@mihaidrug7148]

Keep up the veeery good work man! I learned everything i know about smps from you!!!

[@lifefun3926]

Thank you for information. Greetings from Turkey. 😊👋

[@HaseebElectronics]

best regards

[@stevenyamada70]

I always learn something new from your videos. Thanks Haseeb! 👍

[@kainatamna7372]

Very nice and informative sharing 👍

[@seancastro2416]

thanks for sharing your knowledge about electronics.

[@prabirsenchowdhury3778]

Sir,many many thanks. You are great .

[@TheTwinsDay]

Long time my friend, you are the best and your channel is doing so well, thank you for visited back, will continue to support each other. Please stay safe

[@manjitkumar6510]

Best video on snubber s. Thanks for your efforts. Keep up the good work.

[@HaseebElectronics]

special thanks dear Manjit. best regards

[@ministeriomundialliberando8403]

Thank you very much again. I've found empirically that we just divide by 6 the value of power disipated without snubber circuit to know the amount of power dissipated using it.

[@pradeepmaurya9321]

Apke k es hard work k liye Apke har video k liye thank you so much sir

[@manhardanmahedu3765]

Nice explanation as usual, I always learnt something new from your videos hence watching repeatedly and each time get something new.

[@ARA-ENGLISH]

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[@oumisra]

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[@kabandajamilu9036]

May Almighty ALLAH reward you thanks

[@kabandajamilu9036]

Asalm aliykum bro

[@SMV1972]

Спасибо, за прекрасный урок и понятное объяснение!

[@HaseebElectronics]

добро пожаловать и особая благодарность за ваши ценные слова. оставайся благословенным

[@SMV1972]

If I understood correctly, in flyback, instead of a doubled input voltage at the time of closing the transistor, there will be a reflected voltage + a self-induction voltage of the dissipation inductance?

[@mahbuburrahmanrahman2677]

Assalamualikum. Excellent. Thank you very much for making people understanding very easily. Also Thanks again for your hardworking on behalf of making the video from start to published

[@HaseebElectronics]

You are most welcome best regards and special thanks

[@CuisineWithShahida]

MashaAllah very nice uploading👍 Stay blessed stay cnnctd🤝👍

[@monimonish302]

Hai sir, It was awesome explanation and I have four questions. 1.for peak current calculation formula where 3.13 value is come from? 2.is (tf) value is given in datasheet r how we knw DAT (tf)value. 3.last formula for transistor wattage where 6T is came from? 4.In which way the resistor will discharge the charges at transistor "ON Time" These are my question please give sir to these question to complete this topic sir...

[@electronixlab]

Same I am also not understand this values please guide

[@Rama-po6xw]

Tf is the delay in fall time which is from datasheet and watch once again video to know how does the capacitor discharges during transistor ON time. But I still did not get answers for 1st question and 3rd question. Here I have added another question. 5. In the formula R1 = Ton_min / (3*C1), What is 3? Are 3.13, 6T and 3 assumption? If yes, what is the base for these assumptions? Only Haseeb can answer these questions

[@ryyhjy346]

شكراً جزيلاً على الشرح الرائع

[@HaseebElectronics]

thanks a lot. stay blessed

[@k3lanka]

14 like Good job Great update Super 👍👍👍👍👍👍👍👍👍✋👌

[@AntonioSilva-ng6xt]

This class will be my study material . thank my brother.

[@silviutudose7868]

Excellent explanation, respect from Romania.

[@HaseebElectronics]

Many thanks! and best regards

[@supersilve]

Thanks for a very clear explanation which was easy to understand.

[@HaseebElectronics]

You are welcome!

[@dreopro5611]

Very useful topics. Thank you for the clear explanation..

[@HaseebElectronics]

You are welcome

[@mortenlund1418]

Thanks for explanaition. Perfekt

[@HaseebElectronics]

best regards

[@DelmaHole]

Groovy vibes all the way! Big 👍🏻 up my friend. See you aroud

[@coloradowilderness3139]

Your method is Amazing.

[@HaseebElectronics]

best regards

[@AaoSikhen]

Good morning bhai . very useful and informative video

[@instrumenttechnician6528]

Nice information video

[@merittechshop]

Very clear explanation, thank you

[@AnimalWorld-mv6by]

شرح ممتاز واضح جدا

[@MathsGuru.2023]

Great work sir.

[@Rama-po6xw]

Hi Haseeb, Are you still checking the comments? If yes, Could you answer the following questions? . Answers to these questions will help so many of your channel followers like me. 1. How did you consider 3.13 in the Ipeak calculation? 2. How did you consider 3 in the R1 calculation? 3. How did you consider 6 while calculating transistor power dissipation after adding snubber circuit? The explanation of the circuit and calculations are awesome

[@MrLuo-lq2yv]

Reply about the 2, the voltage in capacitor is reduced almost to zero after three times time constant (3RC), because U*e^(-3) and the energy of capacitor in RCD is expected to release over during T_on.

[@MrLuo-lq2yv]

Reply about the 1, 3.13 should be related to topology of the circuit, only if you can calculate the I_pk and take some margin into account in your applications, the reason about the value, 3.13, can be ignored.

[@MrLuo-lq2yv]

Reply about 3, the value, 6, may be empirical resulted from various experiments in their company.

[@specialvlog6757]

Good work sir

[@pradeepmenaria7999]

I am also from electronics field but this type of explanations still not found any books thanks for very useful information 👍👍👍😁

[@hashiraleezey5154]

Ma sha Allah thanks for giving this valuable knowledge Still watching 👍 Jana'meal

[@vijayakumarkumar9190]

Very good information sir thanks

[@Ayeshainthekitchen]

Assalamualaikum dear brother.MashaAllah very useful and knowleadgeble Upload.Thanks for sharing your valuable knowledge.Allah bless you.

[@gunwantthakare5096]

Very good

[@HaseebElectronics]

thanks a lot

[@kamleshkumardehariya9089]

Great explanation sir... Keep it up.. Thanks🙏

[@HaseebElectronics]

Thanks and welcome

[@user-pq5tz5pn4g]

السلام عليكم ورحمه الله وبركاته أخي الكريم احلى بصمه بتوفق ونجاح دائما

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اكثر من رائع...شكرا لك استاذ جزاك الله خيرا على اسهاماتكم....

[@HaseebElectronics]

thanks a lot dear brother

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Think you so much great dear brother...

[@Telectronics]

Simply to the point ! I liked it very much dear friend ! It helped me a lot. Thank you !

[@deepakbhangadia8693]

👍🙏 god bless u

[@HaseebElectronics]

thanks a lot stay blessed

[@IndianFlavor]

1st like NYC tutorial my friend 👍🏻👍🏻👍🏻👍🏻👍🏻

[@thehooplabs]

Very well explained and beautiful presentation with details shown. Thanks for sharing bro. Keep it up.

[@sheekbikdiy1993]

Very beautiful, artist👏👈👍

[@olivierj.2435]

Awesome video thank you very much

[@mashun-o4d]

Thanks for the explanation. In an atx power supply, I found the mosfet short and diode blown. I guess it's the diode from the snubber circuit. For replacing the diode is there a special requirement like fast recovery, amp rating otherwise they get shorted again? Why did the diode go short in the first place?

[@peckelhaze6934]

A very interesting explanation.

[@AntonioSilva-ng6xt]

Thank you my teacher for this more information I'm happy because this class helped me very much.

[@saicharan8696]

Nice explanation, thank you🙏💕

[@HaseebElectronics]

i am thankful

[@hamaskaka8635]

You're professor!! You should teach in University. Very clear and understanding the concept well..

[@HaseebElectronics]

please accept my best regards and special thanks

[@AbdulMomenZargar60]

Good Morning & All The Best My Dear Brother

[@PRASHANTTKUMAR-gi9nd]

123👍 Impressive teaching regarding modern technology

[@anthonyselby8337]

Thank you for the fantastic video, it was very informative and well presented and now I understand what a snubber circuit dose and how and where to use one 👍 Do you have videos explaining any types of circuitry other then Smps?

[@MrKumar-il4xh]

Thanks for posting this video.

[@HaseebElectronics]

You're welcome

[@jboy4real]

Thanks for the video and especially the effort you put to share your knowledge

[@amberslife]

Great upload 👍

[@sudheerkumar5966]

Very good sir

[@Electronzap]

Good explanation!

[@ExtcWorld]

Thank you so much sir your video helped me understand this snubber network concept very easily, the only calculation part whr i stuck was the last formula where you calculated the pd with rcd snubber which came to be 1.38 Watts, i just wanted to know why we multiplied the T by 6 or to be more precise where the number 6 came from in formula.

[@kahitanongmaisip9358]

plss sir make a vids about those capacitor on primary ground and secondary ground /hot and cold

[@jamesmchilufya3123]

Yes i would also like to watch a video about the coupling capacitor which links the hot and cold ground

[@straightpath5]

assalamalkm. bro will putting snubber resolve ringing issue I am facing in my smps.my uc 3843 destroyed and blew off zener protecting gate....also is putting snubber on output rectifier is it good? and since rectifier diode is heating wasting power is it acceptable to put some clamp to take care of reverse recovery

[@DesiSwaadh]

Like very nice so beautiful good wake 👌👌👌😍😍❤️❤️

[@wegi9621]

great! thanks

[@HaseebElectronics]

You're welcome!

[@rmjnm]

You're great sir, thanks.

[@jmu9969]

Hi; Voltage across Snubber resistor (100k Ohm) is 404V and it’s getting hot in an igbt welding machine . Any ideas would be appropriated. Replaced resistor, capacitor and diode and still have same problem.!!

[@LousyPainter]

Great video my friend! What am I saying. Another Great video!

[@electronicstipstricks9235]

Thank you sir this video it very useful

[@naingaunglwin833]

do you have any recommendation for calculation formula (books,etc). I want to study in details.

[@halleibranee3026]

Perfect 👌

[@HaseebElectronics]

thanks a lot. stay blessed

[@jamesmchilufya3123]

Hello Sir, I am grateful for your explanations, Please can you do a video about the capacitor (ground decoupling capacitor). precisely, the purpose of that capacitor which links cold and hot grounds and how we can troubleshoot its failure

[@jamesmchilufya3123]

@@HaseebElectronics Thanks Sir in advance, precisely the capacitor connecting the auxiliary winding ground(hot) to the cold ground

[@freedomisfood6966]

so greattttttt.thanks master i have a problem 🙏🙏🙏.please answer.my resistor why is been destroyed.

[@HaseebElectronics]

increase resistor value. and may be it is low wattage resistance than the required wattage. check diode in series as well check capacitor as well

[@oswaldocunha9455]

Explendid and clever explanation .Very practical as well . Congratulations ! Since my application is based on a 200v , H bridge IRF740 at very low frequency( 0,3 to 1,5 Hz) following your steps I've got 1,23 uF and 0,54 ohms for 3,13 A Ipk .(Hope it is correct ...) but how the RCD should be wired to the two lower mosfets ?

[@ministeriomundialliberando8403]

Extremely very good explanation about this topic. in fact, the best one I've ever studied. Can I ask your opinion, since I've seen simulations where when using 12 Vdc of power source voltage, they have measured up to 2500Vdc of spikes, can a such low power source produce such a High voltgae spikes in a coli? I'd appreciate your suggestions. Thank you.

[@HaseebElectronics]

best regards and special thanks yes if snubber circuit is not used, these spikes might reach at this amplitude due to winding ratio, reverse emf, switching topology, load, leakage, core permeability so the voltage stress spikes may reach at this level

[@ministeriomundialliberando8403]

@@HaseebElectronics Thank you for taking your time to help and respond. God Bless you.

[@maissathiaw963]

hello sir whais causing diode snubber circuit is varying ???

[@MrKumar-il4xh]

Please explain the 6T divided in transistor power dissipation formula.

[@HaseebElectronics]

At the turn “on” of the switching device, the voltage and current start changing simultaneously and reach their final values simultaneously. The current waveform goes from 0 to Io , and voltage across Q1 goes from a maximum of Vdc down to zero. The average power during this switching transition is P the power averaged over one complete period is (Io Vdc/6)(Ton/T). Assuming the same scenario of simultaneous starting and ending points for the current fall and voltage rise waveforms at the turn “off” transition, the voltage/current overlap dissipation at this transition, this power averaged over one complete cycle is (Io Vdc/6)(Toff/T) so it is to be assumed that 6 is assumed as constant for RCD snubber for buck switching device

[@bartdepauw1156]

Very nice explanation ! How do you select the diode type in this case ? Based on I peek = 0.85 A and diode response time ?

[@aeropeoplellc8160]

If the diode is directly connected across the primary coil in reverse biased does that also help ? because it takes the (-) EMF spike and gives it back to the other end of the coil effectively shorting it hence taking the negative emf away. but that will effect the magnetic field as well which might lose energy here rather than in the secondary coil. Please guide thanks.

[@HaseebElectronics]

connecting a diode will case excessive power dissipation and will cause sudden discharge so the it will cause to loss in energy

[@deepalps]

Sir, I am using a 3 phase contactor to switch a 25kvar capacitor at 440V(33A at 440V), can u suggest the right values of capacitor and resistance that can be used as a snubber to supress arc

[@HaseebElectronics]

welcome dear i have to idea about arc suppression snubber, i will try to search, otherwise some electrical engineer can solve this issue, as my field is electronics. i will try to check its solution, best regards

[@kahitanongmaisip9358]

awesome your my idol

[@kahitanongmaisip9358]

@@HaseebElectronics ty sir i want to know about smps pls i will keep sharing your vids

[@فؤادالزعبي-د2و]

انا عربي وخلال بحثي عن هذه المواضيع في اللغة العربية، قد اجد اشخاص مختصين يتحدثون لكن لا يعطونك الاجابة الصحيحة الواضحة التي وجدتها هنا

[@HaseebElectronics]

السلام عليكم و رحمة الله و بركاته لله الحمد والشكر اخوكم محمد اشرف

[@diy9045]

Ipk=(3.13 *Pout)/Vdcmin where does 3.13 come from? and in the part of calculate power dissipation how can i find Tf value?

[@mwenedatacassim3064]

Asalam Aalaikum It has been so long, I was following you silently, be blessed for your initiation you made of teaching us, you are amazing teacher bcz most of every thing I know about flyback converter it is bcz of you, thx for this, but I want to ask you a favor of clarifying fall time (Tf) you said in this tutorial (284) snubber circuit, you said that MOSFET used in that example has 0,3us of fall time(Tf) after I tried to read more than ten datasheet then I realized that there is no MOSFET with fall time of that range, I saw instead delay fall time(Tdf) may probably be in that range. So, I want to ask if you may give us again some other clarification if that 0,3us of that MOSFET was Td or Tdf? Be blessed, thx.

[@ansarisulthan7750]

Sir I am beginner I am interested in electronics tell what to do I am chennai

[@HaseebElectronics]

first of all you have to study basic fundamentals of electronics and then implement it on practical work.