{247} Current Sense Resistor Calculation - UC3843 DCM Flyback SMPS design -Urdu
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- Опубліковано 16 кві 2022
- Current Sense Resistor Calculation in UC3843 DCM Flyback SMPS design. i explained in urdu / hindi language. Current-mode control is widely used for switching mode power supplies due to its high reliability, and it protects and limits the current at peak output power operation,
Download Current Sense Calculation bit.ly/3jxHHl6
The current sense signal is an essential part of a current-mode switch mode power supply design; it is used to regulate the output and also provides overcurrent protection. The current sensing circuit for UC3843 in current-mode control provides the protection at full load operation and ads the current limiting facility in the design. The sense resistor RS monitors the current. it is connected at source pin of the mosfet and ground line of the dc rail. the all current have to flow through this resistance and it is causes to drop voltage across this sense resistance. thus these dropped voltage are fed to isense pin of the UC3842, UC3843, UC3844, UC3845, as the current reaches are at its peak primary current value, it detects the peak voltage for the current sense comparator, which immediately terminates the drive pulse until the voltage across this sense resistance drop below 1 volt. The UC384x family of control ICs provides the necessary features to implement off-line or DC to DC fixed frequency current mode control schemes with a minimal external parts count. Internally implemented circuits include a trimmed oscillator for precise DUTY CYCLE CONTROL under voltage lockout featuring start-up current less than 0.5mA, a precision reference trimmed for accuracy at the error ampinput, logic to insure latched operation, a PWM comparator which also provides current limit control, and a totem-pole output stage designed to source or sink high peak current.
i explained How to calculate SMPS design discontinuous flyback Switch Mode Power Supply in power electronics very easy. how to calculate SMPS circuit design using UC3843. after watching this series of videos you will be able to:-
how to #design #calculate #smps
how to understand smps design calculations for discontinuous flyback function of switch mode power supply, in this tutorial i draw the circuit diagram and placed components and made wiring of the components.
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First like first comment please pin
thanks a lot
قابل تحسین۔ میں ایک ماہ سے اسی میں پھنسا ہوا تھا۔ أپ کی ویڈیو نے آسانی کر دی۔ شکریہ
الحمدللہ
Very nice sharing 👍
Have a nice day 💐
Dear Sir ,
In short I say you are having deep knowledge about Power Electronics. I learnt so much by watching your videos.
most welcome and special thanks for your beautiful comment
What an eye opener video, thx for educating your viewrs
it is my pleasure
Walkum aslam good vedio
Lk 29 brother 👍👍👍
thanks a lot dear sister
Very good vdo you mai apka fan hu best vdo sir
best regards and special thanks
Very good 👌
thanks a lot sir
Good janab.mehnat ka thx.
Great information
Thanks for sharing
thanks a lot
Masha Allah Allah pak aap ko sehat o tandrusti day aameen
aameen
Jazaak Allah khair
Wa alaikum salam
جزاك اللهُ خيراً
Haseeb bhai Namaskaar.
another very knowledgeable video.
Thank you very much 🙏
it is my pleasure
bahut shukriya sir!
Outstanding sir
Amazing video dear friend, have a happy Sunday!
thanks a lot
बेहतरीन!
best regards
Mashallah very good
thanks a lot
Mashallah brother aapka work bahut great hai aur bahut acche se explain bhi karte Hain dekh ke achcha lagta hai aapki kam ko bahut mehnat karte hain aap Allah aapko kamyab Kare full watch ki hai video dobara 🙋😍🤲🌹💖💖👌✅👍💝💝💝
Jazaak Allah khair
stay blessed
Super Explanation literally Mind blown away....what an explanation sir Hatsoff 🙏🙏🙏
good morning brother good talent
bhout mushkil subject h 🙏🙏
thanks a lot dear sister
Wonderful video
best regards
very informative video sir thanks for sharing your valuable information with us ❤
Jazaak Allah khair
Very good and useful information sir thanks for sharing this knowledge to us
it is my pleasure
Sir ji 🙏 nice video 👍
special thanks
Very good informative. Many many thanks.
best regards
Aanish ka daily dose
best regards
Great sir, Thankyou very much, Maine aapka videos aur dekha hu current sense ka fir bhi apne aap ko rok ni paya fir se dekhne ke liye, sir uc3843 se max kitna power ka SMPS design kr sakte hai 1 MOSFET Wale topology se?
salam brother 🇺🇸💐👍good work how are you brother
وعليكم السلام ورحمة الله وبركاته
yes sister i am fine
Nice vedeio
thanks a lot
👌👌👌👍
best regards and special thanks
Thank u sir ❤
👍❤
best regards dear brother
👍
best regards and special thanks
Good morning sir
وعلیکم اسلام،👍👍
thanks a lot
❤
Süper bir video olmuş
12v 50a 100a hb smps devresi hakkında bilgi verirmisiniz.
👋👋👍👍❤️👍👍👋
thanks a lot dear friend
Sir plz give more info about the convertor constant which you have selected as 2.5
Can we use a transistor as current regulator keeping constant voltage?
Dear Sir,
I have a pic microcontroller that generates a PWM signal but when I connect this PWM signal to the MOSFET gate(Transformer switching) the PWM signal voltage amplitude goes 1.5v or lesser hence MOSFET doesn't switch. In this situation what should I do.
Hello sir, Kya DCM (duty cycle), Har pwm ic mein same rehta hai kya, air agar NAHI to usko kaise le, pls batiye...tks
buck converter round core calculation
12v24v36v48v72v /10A
Sir DC me frequency ni hoti DC direct current hoti pr is me frequency kesa plzz explain kr den ❤
For full load the duty cycle is not utilised to maximum 50%,
Sir isolation transfarmer kaysa banya
Sir please uc3845 pin 2and 3 configuration batain please 🥺
Sir without load volt 110 but 100watt bulb load volt reached 10 v why on crt kit kaha problm hota h esa
How to set duty cycle of the ic ??
Sir what is work of lm393 ic
Smd capacitar जो कुछ लिखा नहीं रहता उसकी valu केसे पता करे
Resistor kitane wattage ka hoga
current value ka square, multiply with Resistor Value
i^2R
@@haseebelectronicsurdu thank 😊 you
8:00 calculation ki galti ho gai thori. 1x10^-5
Oh really sorry for that
but no problem, the procedure is same
i will correct it
special thanks for your point
اسلام وعلیکم میرے پاس جو سپلائی ھے اس میں 3845 لگی ھے آئی سی پر 8 وولٹ آتے ہیں آئی سی کی آؤٹ پٹ پن پر کوئی وولٹ نہیں اور سپلائی بند ھے آئی سی تبدیل کر کے دیکھا ھے
👍❤️
thanks a lot