{1070} Why PFC is used in SMPS? Power Factor Correction
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- Опубликовано: 2 авг 2024
- In this video number {1070}, Why PFC is used in SMPS? Power Factor Correction, I explained pfc in smps switch mode power upply circuit. it is volatge booster section, which boosts the rectified dc voltage. it supports the pwm controller to regulate output voltage. if the line volatge drops, this volatge booster maintains on dc rail.
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#pfc #smps #explained
00:00 why pfc is used in SMPS switch mode power supply
00:53 how smps works
03:24 smps working principle
05:49 line regulation and load regulation explained
06:14 what is duty cycle
12:32 what is power factor correction 
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As-salamu alaykum thank u SIR for answoring my questeion.Very good explanation thank u so much May your love, service and sacrifice during the holy month keep Jannah's doors open for you forever. May your Ramadan keep you close to Allah and your Eid close to family, friends and all of your favourite things. Wishing you a Ramadan filled with opportunities for growth and inner peace
it is my pleasure. stay blessed
Assalamo alycom wa ruLLAHy wa brakatuh
dear brother, I need help urgently.
I have invt solar transformer, it's
GD100-011G-4-PV .
I accidentally reversed the incoming poles from the solar plates, where by what look like two resistors on top of each other blew up.
My problem is that I can't tell their ratings. I searched the internet but with no avail.
Can you be of help ?
Thanks in advance
the best electronic engineer on RUclips so for.
Allah bless you and thy family
Many many thanks
sir, kaash aap hamare college me Power Electronics ke Lecturer hote. itna shandar explanation muje kisi lecturer se nahi mila ab tak.
I applause you sir for this excellent explanation. This is far the best explanation to PFC circuit.
Thanks for noticed my question. Now I can understand why PFC CIRCUIT used in high watt smps . Thank you So much Haseeb bhai . Hu to Mai India me rehne wala banda pr aap se bahot kuchh shikh raha hu . KHUDA AAPKO AUR AAPKE GHAR PARIWAR KO KHUSH-HAAL RAKKHE YE HI MERE DUA HAI . THANKS ONCE AGAIN HASSEB BHAI .
A very comprehensive explanation on PFC circuit. I have learnt a lot. Thanks for uploading these type of contents. Keep it up.
Nicely explained. Any body can learn easily by watching once your vedeo. No words for you. You are great. Thank you so much. God bless you and your family.
Thanks and welcome
Thank you for sharing your knowledge & all your incredibly detailed videos. They are extremely informative & helpful. Your explanations are clear and really make it easy for us to understand. Huge respect!!
thank you very much sir... you are the best teacher... god bless.
You are most welcome
When your teaching is good and it is easy to understandable thanks
It's my pleasure
Teşekkürler efendim. Sağlık ve huzur dolu günler dilerim.
Best on U-Tube... Excellent in Presentation, Delivery, Knowledge
Best explanation ever ! Thank you very much Sir . Greetings from India .
Thanks and welcome
ALLAH razı olsun. Hayırlı Ramazanlar dilerim...
Ramzan Mubaarak
و عليك السلام و رحمة الله و براكاته و بارك الله فيك و جازاك الله خيرا
Shukriya Maestro. I love this kind of content. It helped me a lot!!
it is my pleassure
special thanks for your valuable appreciation
Absolutely Great!!!! My humble thanks. Now i understand PFC completely.
Most welcome!
perfect.
I also had the same debt in the previous video.
Thanks for the explanation.
A hug from Portugal
You're welcome!
Very nice sir,
Thank you
very informative video to clear concept of pfc power supply, sir i am locking forward for trouble shooting in pfc power supply
Amazing Haseeb!
Greetings from 🇧🇬 Bulgaria
Thanks again for sharing this informative video keep sharing
Nice , u are the master in power electronics
Your description is very easy to learn basic concepts, may God bless you, I always see your videoes when ever I stuck in my electronics work, and I get ways to go ahead.
Thanks and welcome
Excellent presentation ,.
Highly recommended for hobbyists and students tinkering in electronics . Well done Haseeb
Many many thanks
Much more pretty good explain
شكرا 🌹
Well explained, in simple words , college professors tend to ignore the basics and stick to solving problems without getting the student understand the basic concept.
best regards and special thanks for your valuable words
Excellent explanation!!!
Wiating 😊
Thanks for your informative content👌
You are a very good teacher, gentleman and a scholar. Regards.
You are very welcome
Very good! I like your videos more and more because they have theory and practices.I am from Spain but I understand your English perfectly.Congratulations and so on
best regards and special thanks for your valuable words
i also added Spanish subtitles, you can watch my videos with translations
Thank you so much ! Super well explained and very interesting! I love your videos!
You're very welcome!
Thanks very much sir. Well explained 🙏🙏🙏
عالی بود thats great
Thank you mr Haseeb. Ive always wanted to understand how this works.
it is my pleasure
you can video number 834 for its detailed theory as well
ruclips.net/video/b8NakIz-7fk/видео.html
Masha Allah well versed video
Many thanks for that explanation.
You are welcome!
As salaamu alaikum thank you for the lesson akhi, clear and precise as usual
Thank you brother❤
Dear Haseeb,
Excellent explanation video ❤
Many many thanks
Thanks for sharing a very informative video's sir Haseeb.
You are most welcome
It's very informative video think you sir ❤❤❤❤🎉🎉🎉🎉🎉
Thanks and welcome
Yes i understand
Very nice. Thanks for enriching knowlwdge. Love you.
Thanks and welcome
Thank you sir very clear explanation
You are welcome
Sir, i am very thankful to you for sharing this precious theory.... apki english video is impressive but we can not keep it in our mind for long time but in urdu.
thanks a lot dear brother
i also record same videos in urdu. and i am sharing my all videos in urdu language for my Pakistani and Indian brothers
Assalam o Alaikum . Nicely done sir
Lovely way for me to spend the last few hours of my night shift!
I was also going to ask the same question regarding PFC. Today you have very nicely explained and cleared the concept. Request you to make video of PFC circuit diagram.
Thak you from Ahmedabad- India.
it is my pleasure
sure i will arrange a detailed practical explanation and troubleshooting video
Thanks brother, waheguru g hamesha tarakiyan bakshan.....
khush raho bhai Ji.
Sir kindly tell me your WhatsApp number....
Sir, Kindly provide me your WhatsApp number....
Sir vedio vry knowledgble pls bldc fan circuit pai vedio bn lo
👍
Aselamu Aleykum Thanks for the 😊explanation 😊😊
Very nice sir
Thanks Sir 👍
Thankyou so much
Most welcome
Thanks for sharing
it is my pleasure
👍👍
Excellent
thanks a lot
Very very nice sir thankyou ❤
Most welcome
thanks....sir ji..
Welcome
👍👍👍👍👍👍
👍👍👌👌
This is a very interesting topic. It would be good to visually see PSU with PFC circuit connected to multimeters and oscilloscope at multiple points (switching IC, PFC IC etc) to see actual changes in input voltage and switching duty cycle when load and input voltage is changed while the PSU is working. If you have adjustable load and adjustable power supply maybe you can do this in a future video.
thanks a lot
sure i will arrange a detailed practical session with all possible checkpoints
@@HaseebElectronicsexcellent. thank you.
Jai Hind 🇮🇳
Hello mister and thank you again for your excellent videos
Could you tell the difference between pfc circuit and boost converter please
Thank
Thanks sir g love you ❣️😘😘😘😘❣️😘❣️
Most welcome
Dear my brother engineer Hseeb this massage from Egypt thanks a lot for your keen skill and efforts done by you to produce such interesting videos kindly I ask you is there is any software presented high frequency transformer used in this circuit best regards
Hello from USA.
welcome, good morning from Jordan
Should also see video : #307 on the PFC circuit...
best regards
i am planning to record a very detailed video on PFC in power supplies
it will available very soon
i will try my best to each and evry smallest part in theory and practical
Very nice information. But sir some PFC circuit inductor use AC line. How it works inductor.
yes
there is bridge rectifier based PFC
and the other is Bridgeless PFC circuit
Great explanation! I was wonder if the flashing in the series bulb in most of your video is due to the PFC circuit ramping up the voltage in steps to slowly and more efficiently charge the bulk capacitor? Can you see the bulb flashing with your eyes or is it an effect of the camera sync. Thanks again and have a great weekend.
thansk a lot for your valuable appreciation
yes the series lamp flashes and it is observed visually
it is due to linear increase in smooting capacitor
until the volatge value on DC rail is not maintained, the PFC controller tries to use maximum duty cycle
which results to dropping the line voltage due to series lamp, which causes to turn off PFC controller
thus line volatge regain, and PFC controller restrts
this reboot process remains active until the volatge are maintained on DC rail
@@HaseebElectronicsbunu görsel olarak bize anlatın lütfen. Senden Allah razı olsun.
Excellent explanation sir..... learning many concepts from your videos...one doubt.....if pfc controler is there then ,will there be necessary for output feedback to pwm controller,for output regulation ,or pfc will manage by its own.....
PFC controller maintains voltage on DC rail.
PWM needs feedback to compensate output variations caused by load
@@HaseebElectronics thankyou very much for replying sir....
Excellent video sir
So, PFC controller is also switching at very high frequency as each 50 Hz period starts with very low voltage ? So it also ameliorates the power factor as current is now taken whole the 50 Hz period ?
Ve aleykumselam tankyu
Selamün aleyküm kardeşim bir sorum var. Bu videodaki 12:36 civarındaki yerde tl431 ve oktokuplöre gelen bağlantı yolu aynı hat üzerinden geliyor. Bu doğru mu yoksa yanlışlıkla mı çizildi. Doğru ise oktoküplör GND ile bağlantısını nasıl sağlıyor da led yanıyor😮 tl431 in altındaki dirençin bağlı olduğu GND den mi devreyi tamamlıyor😊
Kindly I ask you my brother why is technic named as fly back thank you
haseb, if you could insert the Serbian translation, it would mean thank you... greetings and support from Serbia👍
Serbian translation is already added
Click on video screen in yourube
Then CC
THEN SETTING icon from the same video screen
select CC or translation
Then select your preferred language Serbian
Sir, I hope you are doing well. I have been facing problem with my pc power supply. The problem is mainly a buzzing sound when the power is introduced to the power supply and the buzzing sound increases when a load is given to it. How can I ge rid off this problem?
Aselamu Aleykum sir power correction ic L6561d jo ka pfc power supply main bohat use hoti hay is per koi detail video banain
How do you determine that the voltage across the inductor is 80v? Or is it just an assumption?
Is it posible to use TL431 for output under 2.5V?
No
For that purpose a zener can be used to operate optocoupler
How can detects Smd cap value plis
Power factor is relation between apparent power and real power
Yes
In this power supply
It is, "bridge based, non-isolated PFC BOOST CONVERTER switching at 65KHz using NCP1654"
good@@HaseebElectronics
So basically PFC exists only because of different main voltages in different countries when high amperage output is required? If all voltage was 240V, PFC would not be needed?
Exactly yes
It compensates the line variations.
It assists the PWM controller to maintain output side of the SMPS
why to explane the new DLL moniter power supply p2422h the ic no paret number please🙏🙏🙏
assalamu alaikum, i have a problem in my smps 12 v 20A, why not showing 5 v refference voltage in uc3845 ic , refference voltage showing 650mv. , vcc showing 8v. after i load the led 50w bulb its flickering, what is the problem?
Nie będzie działał ponieważ kontrola napięcia PFC nie pozwoli włączyć przetwornicy.
działa. ponieważ przetwornik PFC i regulator PWM pracują oddzielnie przy zasilaniu awaryjnym, a linia jest monitorowana przez komparator różnicowy
Don't We need snubber ckt sir for 5v PCB board
most of the unipolar magnetic switching topologies need snubber circuits (such as flyback, forward,).
bidirectional magnet (resonant power supplies) are free from snubbers
your skema pfc
Haseeb ji, what is full form of PFC? Have you any clue?
حسیب جی، پی ایف سی کا فل فارم کیا ہے؟ کیا آپ کے پاس کوئی جواب ہے؟
Power factor correction
In smps It is called PFC BOOST CONVERTER
in this power supply it is "PFC BOOST CONVERTER bridge based, non-isolated"
@@HaseebElectronics I am impressed by your heart to comment of your good self. Nevertheless, this response from you, full of many bla bla, speaks volumes of your shallow knowledge on the subject. No explanation is to the point. Please search for the part name that has been used in the circuit and study well. These are non-polar capacitors. When used in series in AC supply, these produce reactive resistance. This is dependent on its value in mfd and hz of AC. I don't expect that you may digest any more knowledge on it. Happy ignorant expert.