{236} UC3842, UC3843, UC3844, UC3845 Current Mode PWM SMPS controller Functional Description
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- เผยแพร่เมื่อ 25 ส.ค. 2024
- {236} UC3842, UC3843, UC3844, UC3845 Current Mode PWM SMPS controller Functional Description. i explained the working and datasheet of this uc384x KA384x series current mode smps controller ic family
Watch this video in Urdu Hindi • #57 Current Mode PWM S...
SMPS practical tutorial • SMPS Switching switch ...
SMPS tutorial and practical troubleshooting and fault finding • SMPS / PWM basics circ...
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وعليكم السلام ورحمة الله وبركاته ... جزاك الله خير May Allah Accepts your charity
best regards
Mashallah your are giving complete skills in free with complete theory and practical knowledge also all engeering student should follow ur instructions specially Pakistani engr should learn practical skills like you. AmaZing haseeb sir hatts of to your creative mind and the way you delivering .
Brilliant teacher and brilliant teaching
in a perfect world, any datasheet would come with your explanation ;] thank you very much breaking it down to relevant values and informations, this is very helpful!
Superb sharing nice to watch it great job
Full watched Very informative tutorial
Thanks for video !
Very nice Explain , ingering Video by IC, stay conct dear,✋☝️👍🇵🇰
Thank you so much sir for this video. Datasheets from manufacturers are usually hard to understand by beginners like me but the datasheet of the IC you used clearly explained them.
Wonderfull sharing 👍👍👍👍
Full watch Wow that's awesome excellent informative vedio mashallah great sharing big thumbs up from me always be happy ameen take care have a nice day love yours performance well done good job keep it up
Good sharing very helpful video thank you soo much for sharing 55 likes
Thanku sir it my honer that you made a great effort on my request.
@@HaseebElectronics yes sir ! You said it in video also.
Thanks sir...
special thanks
Super
thanks a lot
Excellent controller. Nice video my dear friend. Big like👍🌹
Very nice easy way understanding good nice Guru
Sir can 3844 be replaced by 3843??
Current mode Pwm SMPS controler
penjelasan yang baik Terima kasih
Excellent tutorial. Very helpful. I have been playing with the test circuit for a better understanding. I want to make a DC capacitive discharge ignition system and would like to use this chip to charge the capacitor to fire the coil and spark plug.
I'm struggling a little bit with the compensation but hopefully I can understand it more soon.
It is a great idea to change capacitor in CDI,
I think you have to pick the timing signal to synchronize it
I think you should generate pulse using NE555 in monostable vibrator or triggered flip-flop
Because in CDI system, the output pulse is a timing signal with coupled timing mechanical motion. As the RPM increase the output pulse frequency of CDI will increase relatively
Am I right?
@@HaseebElectronics If I understand correctly what you say then yes you are right.
Please take a look at this link: www.sportdevices.com/ignition/inverter.htm
I am trying this circuit. I made my own transformer but the output on pin 6 of the UC3843 is not a clean pulse. I tried different RT/CT and got slightly better result. What do you think of the circuit?
When I look at the RT/CT network on that schematic. I think it is wrong. If I am correct their choice of R and C gives over 778kHz. The UC3843 does not support this frequency. Maybe they should have 470pF capacitor for 77kHz. What do you think?
Assalam alekum sir mppt controller pe video banayen sir
okay brother
i noted it and will try my best to explain it soon
Great .....sir please uc3842 ki frequency calculation ke a video banaye ....asani se samajh me aa jay.
Hello dear fantastic video again, very well taught and explained 👌big super likeeeeee from me thanks for sharing, I truly enjoyed watching it. Stay blessed dear 😊👍
amazing video on functional description of smps controller
nice one
Parabéns! Mas onde eu vejo o próximo video anunciado no final desse vídeo referente a engenharia reversa da fonte 19v com uc3842/3843/3844/3845 ???
Obrigado!🙏
Mashallah very very nice video still watching 👍👍👍👍👍
Thanks a lot Sir. Your all videos are super.
Very good
That's great work 😀👏 👏
PWM nice
Great shering 👌👌
Can we use it for 60V,12A?
May Allah subhan wa talla shower his blessing upon you and All muslims.
أحلى بصمة شكرا أخى يدوم تواصل إنشاء الله 🌷👍
Thank u for this info Mr Haseeb
My pleasure
Excellent video I watch and like thanks please
Always superb information video brother
Nice video, my friend
Nice one
best regards and special thanks
NICE EXPLAIN SIR JI ............THANKS
Awesome information plz keep it up
Brother Haseeb, thank you very much I love your contribution in such a deligent and excellent presentation. May Allah help you in every way
Good knowledge brother 👍
Very nice teaching sir 👍
Very nice upload Haseeb. Well done
MACHALAH
GOOD LIKEE AND WCH FOR U FRND
Great job
Good thanks for sharing
thanks a lot
Good knowledge brother 👌
Good job Thank you sir ji
best regards and special thanks
Good
Aselamualeykum hasseb i was try to biuld smps with uc3844 ic and irf840 mosfet but the vcc voltage maintain at 13v but there is no output voltage and referance voltage please can you help me out
👍Thank you
Waslam janab video dekh li
Thanks for sharing
Brother is it safe to replace UC3845 IC WITH AS3843
please check video number 361
Thanks for sharing 👍👍👍👍
Sir please jo video english main banao wohi video urdu main bhi nanaya karo please sir sir hum ko ap ke videos se buhat kuch seekhne ko milta hai aur ap ke samjhane ka tarika bhi buhat acha hai khuda ap ko hamesha khush rakhe thank you sir
@@HaseebElectronics thank you sir
Thank you again for your wonderful tutorials. Can You share the link where you explain UC38XX series in practical way, please?
i will share soon the practical design video
Looking forward to it
Today I tried to repair a VCR "Daewoo V-737" with SMPS without any output voltage. 330 V DC is OK. It is a flyback design with one NPN-Power-Transistor and one smaller NPN-Transistor. All semiconductors and resistors are OK. It seems the oszillator it will not start to swing, but I don't know why. Could you please explain such a design and give some hints about possible failures? It would be a great help for me.
First like and view while watching video please pin bahi 🌹🌹🌹🌹🌹🌹🌹🌹🌹
هل التردد مستقر على قيمة معينة أم لا ؟
نعم أخي عندما نختار قيم مكثف CT والمقاوم RT. ثم سيكون تردده بقيمة ثابتة. للحصول على تنظيم لجهد الخرج ، سيغير هذا ic عرض النبض (تشغيل الوقت مقابل وقت إيقاف التشغيل). لذلك تسمى هذه الوظيفة باسم تعديل عرض النبض (PWM)
Great work bhai! ❤️ Stay conected !
Thanks for sharing such a beautiful informative video bro. Jazak Allah.
can uc3843 used to make buck converter
yes, it can be used to make unisolated or isolated buck converter
Throughly explained mashaAllah full watched
awesome video 😎😎
Very informative tutorial 🤗👍❤️👍
37 lk 👍 w salam bro
Nice information sir...i have a question...in SMPS the duty cycle change can vary output voltages...how can we increase or decrease current amperes of SMPS by PWM ic..please guide
Hindi me translat kre pl. Thanks sir
Sir meine eik smps mein khud ka uc3842 ka circuit bnakr lgaya h ismei jese hi load daalrha hun isk smps k vol girjate hain
Agr mein load lgakr duty cycle adjust krdun tau load htane k bd volt required volt se xyada hojate hain
Kindly help me plzz
83 like
wah g wah zabardast superb sharing
مساء الخير بالتوفيق
نورنى 👀👈👈👈
Sir thanks for sharing nice information of Smps, mere pass Jo smps Hai uski stand by voltage 5 volt mil rahi Hai but , ps - on 3.8 volt battery Raha Hai, vaha se ek resister ke throu ic ko ja Raha Hai, but ic ko 4.9 volt aa Raha Hai, resister on board value barabar Bata Raha Hai pls bayta yeye Kay karnar hoga, and questions ye Hai ke , aapne Jo o/p ke liye Jo three resister ka ckt Bata ya Hai ussse appne ko yahi pata chalega ki , primary swhiching ok Hai Kay nahi , am I right? Or yisse ye pata chal sakta Hai Kay? ki 3.3v ya 12v or 5 v o/p Mai problem Hai?
Thank you so much , pls reply soon.
please sir I don't really understand I think when you do it in practical like for how you did for adjustable Zener and optocoupler I will understand because I have the ic but cannot use it to make a 12 smps;
sure dear i will do it practical. best regards
Pls sir , how to calculate uc3842.45 frequency
okay dear i will explain it as soon as possible
Kindly explain I want to know how the IC adjust it duty cycle down to 35%. Thanks
Aslamoalakum sir gee aap Kesy hein sub theek thaak sir ge koi EG4318 IC per koi vedio Hy to plzz send kar dein shukrya
Nice👍
I wish you a nice evening 👍👍
Regards ♥ ╮Renate
nice 👍🏻
Salam M. Haseeb, thank you for the video to make me better understand how 3843 works. In a working ATX PSU, this IC has no power at VCC pin when on, i need to ground the green wire to see 14v at pin7. How can I know without multimeter that this IC is swithing ? thank you.
@@HaseebElectronics Sorry i wanted to say how to check switching without an OScilloscope, i have only multimeter. In my ATX, i have in the primary only one IC, the 3843, i believe it is doing all the switching
can we use 3843 rather than 3844?
Hi, i have no output, the frequency at pin 6 is between 6 and 10 Khz. Your diode technique at the opto coupler doesn't give any output. I checked the RT/CT, it is 2.47 K Ohm and 1Nf smd capacitor. Any idea where to look at ? thanks.
please sir ca n you make a video on how to calculate and choose the resistor and capacitor for it how to solder it or and also use it and the
sure i will do it very soon
I have an smps which using uc3842 I want convert to work on 110vvolt supply ..what should I do ..I know need to change main cap to higher voltage ..please explain what are the other changes to do
Sir, I have a schematic for smps design. I need you to explain it to us because is of a different designs. Also ,I need to know how the winding should be for it to work. How will i send it to you?
Plz give me this ic functional description data sheet
How can I add LOAD LED to uc3842 so tht it will come on whenever I connect it load..It is not power LED
thank you
Thank you
Can we use uc3843 just by internal frequency without external rt/ct
no
it needs external RT/CT components for oscillation
Can we control plus of 3842 or it is only between 97% to 100% variations
Pls make video on RCC converter design using 13003 Transistor
Nice video 👍👍👍
if i want to change smps voltage output
i want to reduce the voltages
where i should mod?? btw?
please help
please check video number 283 or 258. video number 283 is in detail
Pl reply sir
hi brother pleas help me.the snubber resistor in any watt destroy.if be small like 10k 2w snubber destroy. if very big snubber dont have effet.
w salam
Ilke🌷⚘🌷🔔🔔