#263

[@ajayeveron4435]

Superb piece of information. Accept by accolades. You are one of the best teachers I found on KZbin. I am your fan from India.

[@HaseebElectronics]

Best regards and special thanks

[@muhammadmaroof1444]

Sir ur excellent work , Any One person who relate this job,when he play ur video.he can't stop or skip any part of ur video,thank u for this informative,and good video.

[@HaseebElectronics]

Many many thanks

[@solitairejoker8169]

بارك الله فيك اللهم زد في علمه و بارك له فيه و اجزه عنه خير جزاء

[@HaseebElectronics]

Aameen. thanks for checking

[@rmjnm]

Excellent video. I was to put a request for a series of video where we can get to know designing a power supply of our own. So I'm really very excited for your upcoming videos with on this topic. Thank you very much for your help and support. Please keep it up.,

[@amnaiqbal8016]

Excellent video tutorial. You cleared all my concepts.

[@HaseebElectronics]

it is my pleasure

[@EuanneHyunaRosas]

this a great help teaching this formula how to solve it for the students, thank you my friend

[@lupojacobo9892]

Boss I want to learn to say thank you in your language. Because than the less you deserve from Us.

[@HaseebElectronics]

Shukriya (thanks) please accept my best regards and special thanks

[@lupojacobo9892]

Shukriya electrónics Master

[@AaoSikhen]

Very nice video Thanks for shareing Stay connected

[@sherinthomas1726]

very useful information. Thank you for posting such a presentation.

[@kitchentoolss]

Really enjoy the full tutorial. 🌹🥀💞 It is really useful for the students of electronics. 👍

[@mohammadhasanshokoohi7150]

Very good and complete. Thannk you.

[@queenjellai]

Thanks for sharing this video. watched full and liiked it

[@khanlalavlogs]

Beautiful and excellent demonstration, a very detailed oriented and well explained. Thanks for sharing such a nice video. Keep it up brother.

[@Dr.QaisarAbbas99]

nice job dear bro thanks for sharing stay blessed

[@samiafazal]

Wa aliqumuslaam good work brother

[@AbdulMomenZargar60]

Walikum Salaam Dear Brother Like Video Have A Blessed day # 29

[@FoodCraft5015]

nice share dear😍 lk 105

[@STV-th2tv]

Thanks for shearing knowledge excellent video my brother I watch and like thanks

[@jromhek2070]

Liked and subscribed …Brother you have the best SMPS explanation channel in English ( IMHO ) . Thanks

[@HaseebElectronics]

Thanks and welcome

[@electronicrepair5060]

السلام عليكم بارك الله فيك على مشاركة العلم وجعله الله في ميزان حسناتك

[@DarsKitchen]

Very Interesting video!! Like 119

[@PakistaniFood1168]

MashaAllah good job dear 👍

[@machiElectronics]

Sir thanks nice learning method god bless you

[@Bibekanandaroy-tn5jm]

Many many thanks sir ❤

[@HaseebElectronics]

Most welcome

[@kabandajamilu9036]

So educative asalam aliykum

[@leighstale]

Nice share friend

[@Herbye46]

Excellent explanation!

[@21thTek]

Just Great !!! ⭐⭐⭐⭐⭐

[@fooddrive8954]

Mashaalha good information lik168

[@nicolaspillot5789]

I love your explainations, very instructive, thanks

[@HaseebElectronics]

best regards

[@IsmailOfficial-]

Very Good Work

[@RubiaFamilyFOURever]

Interesting video friend

[@kokimkigunku3417]

Hi, there us a formula from TI for a 12v 4Am SMPS Cin= 2×Pin ×(0.25+1/pi ×ArcSin(Vbulk(min)/√² ×Vin(min))) / (2×Vin(min)² - Vbulk(min)²)× fline(min) Where : VIN Input Voltage 85 --115/230 -- 265 VRMS fLINE Line Frequency 47 --50/60 -- 63 Hz VOUT Output Voltage IOUT(min) ≤ IOUT ≤ IOUT(max) 11.75 -- 12 --12.25 V VRIPPLE Output Ripple Voltage IOUT(min) ≤ IOUT ≤ IOUT(max) 100 mVpp IOUT Output Current 0 -- 4 A η Efficiency 85% My approach is: First, the denominator: 2×Vin(min)² - Vbulk(min)² × fline(min) (2 × 85² - 75² ) × 47 = 414775 Second, the numerator: 2 × Pin ×(0.25+ 1/pi × ArcSin(Vbulk(min)/√2 ×Vin(min))) 2 × Pin ×(0.25+ 1/pi × ArcSin(75/ √2×85)) 2 × Pin ×(0.25+ 1/pi × ArcSin(75/ 120.208)) 2 × Pin ×(0.25+ 1/pi × ArcSin(0.6239)) 2 ×Pin ×(0.25+ 1/pi × 38.6029) 2 ×Pin ×(12.5377) But at the end the power is very huge. That is: 126 = 2× Pin × 12.5377 / 414775 Pin = 2084183 watt My questions are: 1. Is the calculation on denominator correct? 2. Is the calculation on numerator is correct? 3. If correct, is power in that huge?

[@k-pop123]

❤️❤Your video is very good. It's amazing to make such a wonderful video.❤️💞 좋아요!!!

[@mariamkiduniya492]

Nice informative video bhai

[@MrKumar-il4xh]

Nice explanation. Please make video on i/p filter and protection crt calculation.

[@kabandajamilu9036]

Asalam aliykum sir nice explanation sir

[@HaseebElectronics]

Wa alaikum salaam thanks a lot

[@sunitaskitchen1627]

88 good sharing 👏👌🙏

[@batistafrose6009]

Very good informative video

[@jboy4real]

Thanks for your effort impacting your knowledge to us thanks

[@TechFromDan]

# Haseeb Electronics, please can you put the link to the website you learnt this from

[@HaseebElectronics]

this not from any site, this i studied in power electronics designing about thirty two years ago

[@TechFromDan]

@@HaseebElectronics please can you give me the name of the textbook you used

[@abdulhayee5902]

Assalam o alaikum. I find it very interesting. Could you tell me how many parts of this SMPS Design are there, as they are not in sequence I think. Kindly mention video numbers related to these

[@halleibranee3026]

Thank you 😊 Very good teacher 😊

[@HaseebElectronics]

You are welcome!

[@lavanyasubramaniam7398]

Thank you for sharing your knowledge 🙏

[@HaseebElectronics]

best regards

[@thatpunjabifamilyvlogs8471]

Awesome knowledge. Great work as always. Sending you lots of love & support from Australia 🇦🇺❤️

[@sakthiaudio771]

Super sir...your next calculate EE42/20/21 - 12 TO 35-+ DC INVERTER

[@Numltv]

great beautiful video allah bless u

[@friendman2001]

Any videos which continues the flyback series and calculates the output capacitor?

[@shanzay4316]

Just amazing 👍👍👍👍

[@shezivlogs5639]

Very knowledgeable video

[@ektaSingh09]

Excellent

[@frequentflyer9724]

Informative and nice video

[@farrukhazad]

MashaAllah , nice video , i like

[@MallikasKitchen]

Mashallah amazing video sir 👍

[@Enazhagiyaillam]

Nice👍👍👍👍

[@IsmailOfficial-]

Thanks for Sharing Bhai

[@ajohpv7033]

Haseeb super!

[@MrsRashidSajjad]

اسلام و علیکم بھائی جعمہ مبارک

[@alirezaei599]

Very good,❤❤❤❤

[@samahmad9579]

Hi Sir, I hope you can mention along the way how to vary the output current in design from say 5Vdc at 2 Amp to the 5 Vdc at 3 Amp. Which components require the replacement, etc for that purpose. TQ, you simply the best

[@anildhanraj5778]

Sir can you please make an video regarding to compensation loop of flyback smps.

[@HaseebElectronics]

sure i will try my best to share CTR and compensation method for compensation and feedback looping

[@BajisKitchen]

Thanks for sharing good information 👍

[@worldonscreen]

such a wonderful video sir👍👑

[@suatkaleli5075]

sorry but today I rechecked the video and I have the smps battery charger circuit which has input value 220 AC and output is 84V DC and 8 A. In accordance with the video I calculated that the cap. value should be about 3800uF however this circuit has the double cap with the value of only 120uF and circuit works fine.

[@saimasrecipevlogs1214]

96.. Gooood vediooo Frnd Thank you

[@krishnamondal4737]

Sir excellent video , keep it up

[@muhammadishtiaq24]

Excellent 👌👌 bahi

[@prashantsharma8627]

Can you make a video for design using simulation software and calculation.

[@friendman2001]

I get a little confused. Do you have a specific playlist just for this flyback design listing the videos in order?

[@dream_electronic_embedded9285]

Ur great sir

[@chandanaranasinghe7197]

Thank You

[@janasmeal7916]

Wa alaikum asalam first like dear brother 👍

[@belunjadiartis]

Great

[@PrasadKaranapu007]

Sir, upto how much range of power, we can use smps flyback topology, if we need more power, which topology we can use. and i am eagerly waiting for part 3.

[@sudheernorway]

Hello Sir, why did you consider Vdiode : 1V? We have 2 diodes right? I believe 0.7V for each diodes right? Pls clarify me. Thanks in advance

[@FoodFunAndEnt]

Walekum Salam brother

[@biplobrashmi5565]

Sir ...flyback calculation and desing...and flyback driver calculation ...ak video plz

[@dmwelectronics9645]

good ...

[@chinmaybiswas6602]

Thanks for your informative video. I have one question. According to your Bulk capacitor value calculation required value is very high. Normally we found very less capacitance value in practical circuit. As example it is seen for 48W output power, input capacitor value is 47uF, or 68uF. For 65W power supply, it is generally max 100uF. Can you please share what's happened there?

[@windward2818]

I think the step by step approach is to establish the required capacitor value and it's WVDC rating, although for selection ripple is also very important. For ripple at 100Hz one design goal is to minimize the heat generated within the bulk capacitor due to internal ESR (which depends on which capacitor you choose, from what manufacturer and how it is constructed, you cannot just go by the value calculated). So there is a tradeoff between the capacitor size and its ripple rating or depth (with some added margin because this capacitor has one of the highest failure rates in the design). The choice of 15% ripple for off line is interesting because it was given as a rule of thumb although what is acceptable is the overall design of the capacitor itself. Also, given as a rule of thumb, was an overall power efficiency of 80% (which is reasonable). If you have a thermal camera and examine different capacitors (of the same value and voltage rating but different vendors and types) in operation you can immediately see the heating effect of ripple. You can just simulated the load (converter) with a resistor. Some, input capacitors will get very hot (above 80 C) other will run a lot cooler depending on ESR. This is why the recommendation was for a 105C capacitor and not an 85C rated capacitor the author wanted some margin. But, in actuality, the capacitor you choose at a given worse case supply power should run as cool as possible in order to maximize it's life (temperature versus MTBF). So, what you will find, if reliability is a factor, the capacitor value will be very large in comparison to the calculation. Also, the WVDC rating of 400V assumes to a certain extent that any fast AC line transients beyond the surge voltage rating of the capacitor is minimized on the AC side using a MOV. So, in a way the design is assuming the rating of the capacitor will not be exceeded. And, it was also mentioned that the capacitor would have a current surge (supply surge limiter) using a NTC Thermistor. Which minimizes the surge current into the capacitor.

[@realisticartist9212]

Sir, you are using 3843 ic. Will this calculation change if we use some different ic.

[@Gary-ts6dh]

6:08 - Setting the frequency to 200 kHz instead of lower will minimize rise time, as you said. But, since the higher the frequency will be the shorter the rise time will be, what would be the drawback if you wanted the frequency to be as high as 500 kHz? Where would you draw the cutoff line?

[@martym2464]

I agree, I wish he spent a few minutes on all factors deciding the frequency... not just rise time.

[@aayesha6227]

amazing

[@carolinediyandvlog]

Podoba mi się film. Życzę sukcesów.

[@krishnamraaju6442]

Thank you very much, can you give the some idea about distributed capacitance in transformer at high frequency and high KV secondary,how to reduce also please give some idea. in transformer design i am selecting the core by Area product method, in that i am fixing the J value initially by 200 amp/cm2, then i choose the core is it correct method of i am going please confirm it. Thank you.

[@joselattuf1564]

Good day from Venezuela south America. I am engineer in electronics . I am interested on this video to design SMPS power supply . I suggest to you if may I say : what don't you use a magic black board to do this tutorial about designing this power supply . I can not see what yiu write on the paper . It is difficult to get all the information from the paper you are using . The numbers and letters are to small .

[@tropicaland3040]

جزاك الله وشكرا

[@pradeepmaurya9321]

Thank you sir

[@sanjayaholla4306]

Hi sir In bulk capacitor calculation, if we reverse calculate with 68uF capacitor value the ripple voltage will come as 60V. Is the voltage value taken shoul be Vpeak - Vdc min hole squre??

[@mohammadpathan4668]

Great !

[@electroniquepassion]

Bien 👍

[@chandanaranasinghe7197]

Can we use the over value for the capacitor rather than the calculated value .... I mean calculated joule increase up to more than 50%. My expectation is capacitor life & life expand. Is it correct

[@satishraju3582]

👍

[@HaseebElectronics]

best regards and special thanks

[@HarvinderSingh-vs2yl]

Kaya 24v 5 amp SMPS ko 36 volt me convert kar sakte ha reference voltage me changes karke aur output ke capcitor ki working voltage Wale lagha kecircuit me

[@yuvanm9040]

Sir how should we select mosfets and igbt ?

[@shravansutar9898]

Sir, what is the battery charging methods

[@Chupacabras222]

Are you sure Vdc(high) is 345V? You should not substract Vripple from Vin(peak), only two diode drops

[@HaseebElectronics]

yes I am sure and we must get mean value of the ripples

[@Chupacabras222]

@@HaseebElectronics So it is actually not absolute maximum, it is just average value? I understand there is a ripple across input capacitor. When input AC is 265V, DC peak is 364V, so voltage on capacitor ripples from 362V to 312V (15% down, minus 2 diode drops). So the maximum voltage that goes to inductor is 362V. Why do we need average value? The same applies for lowest AC input voltage 85Vac, where peak is 120V, and voltage on capacitor would be between 118V and 100V. So the minimum voltage on capacitor is 100V

[@Chupacabras222]

@@HaseebElectronics OK. And why do you substract only 1 diode drop? There are 2 diodes drops in bridge rectifier. Should I substract 2V instead of 1V?

[@HaseebElectronics]

​@@Chupacabras222 we are using single diode in output stage, so for single diode we have to consider 1 volt for bridge rectifier we use 1 volt for 2 rectifiers as it is used in low frequency . normally in calculation the input side diode is not considered we always take care for output side for bridge rectifier in input stage just multiply with 1.424 for calculation please check video number 305

[@electronicrepair5060]

Mr haseeb in current mode smps like welding inverters and all high current mode parellal bulk caps are used what is the purpose of that parellal caps why not to use one cap with large capacity My regards.

[@electronicrepair5060]

Thanks for replying but you miss understand my question i am asking about parellal caps not series caps thanks.

[@prasanthchigurupatii]

Hi , what is reflected voltage?

[@jboy4real]

How do you calculate the out put capacitor