{245}Why SMPS Fluctuates / Reasons for SMPS Output Voltage Fluctuation Switch Mode Power Supply Urdu

in this video i explained Why #SMPS Fluctuates / Reasons for SMPS #Fluctuation Switch Mode Power Supply. i explained in urdu / hindi language. in this tutorial i explained functional description of switch mode power supply, what is fluctuation in output voltage. it happens when there is feedback missing or some failure in feedback loop,
if vcc voltage are out of specified limit then the ic may drive in Over Load Protection OLP mode, or it may go in under voltage lockout UVLO, in OLP or UVLO condition the ic will disconnect the drive signal.
whenever there is some overload condition which will cause to draw over current from the converter but in that situation the smps controller will reach at maximum duty cycle value and the vcc pin will reach at OLP (overload protection) so the output will remain disconnected until the vcc pin will decrease at its UVLO value.
How to repair switch mode power supply SMPS VERY EASY practical troubleshooting۔ i explained practical How to repair switch mode power supply SMPS very easy. i shared my easiest and perfect troubleshooting techniques practical troubleshooting. smps concept and troubleshooting repairing or understanding repair switching mode power supply basics and working principle. also i discussed smps basics. after watching this video you can capable to:-
how to repair smps
how to repair switch mode power supply when output voltage are unstable or unregulated. in this condition the output voltage value moves beyond the load regulation or input regulation tolerance.
if SMPS is dead or no ouput
if SMPS have fluctuating output or output voltage unregulated
if smps have short circuit in output
how to eliminate short circuit
how to troubleshoot PWM SMPS controller when there is no switching from MOSFET
if SMPS have a whistle sound or excessive noise or excessive heat
how to repair mobile charger
how to repair computer power supply
how to repair laptop charger
how to repair inverter of solar system
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[@MarkPrince1317]

بہت ہی خوبصورت اور انتہائی انداز بیان ہے آپ کا بہت بہت شکریہ حسیب آپ کا اس انتہائی معلوماتی ویڈیو کے لئے
دل کی گہرائیوں سے شکریہ اور سلام

[@haseebelectronicsurdu]

آپ کی محبتوں کے لئے دل سے شکر گزار ہوں پیارے بھائی

[@safdargaming1232]

بہت اچھا انداز ویر کا سمجھانے کا
بہت علم حاصل ہوا❤❤❤

[@adeelkhanchannel]

Well don
Nice video good content thanks for shining a very beautiful and wonderful videos

[@haseebelectronicsurdu]

Many many thanks

[@Faizairfanvlog]

Aslamolikum Bhai mashallah zardast volg 🎁✅💐

[@haseebelectronicsurdu]

وعليكم السلام ورحمة الله وبركاته
thanks a lot

[@dipakbhalodia7155]

खूब खूब अभिनंदन हमको समझाने के लिए

[@haseebelectronicsurdu]

most welcome

[@waqasmughal7320]

آپ نے بہت اچھا گاءڑ کیا ہے جاناب

[@haseebelectronicsurdu]

اللہ کا شکر ہے

[@saa225]

Sir, Salam
I am really fan of you, .am ALLAH
S W T bless you.
Syed Arif Akhter, Canada

[@haseebelectronicsurdu]

الله آپ کو سلامت رکھے آمین

[@haseebelectronicsurdu]

و علیکم السلام و رحمۃ اللہ وبرکاتہ
رمضان المبارک اور عیدالفطر کی مبارکباد

[@sourcecode1827]

MashaAllah very informative video

[@yogeshvedpathak1410]

Thanks for sharing very IMP information 🙏

[@haseebelectronicsurdu]

So nice of you

[@MoBile-nt9xt]

Ammazing detail.
Thanks sir

[@haseebelectronicsurdu]

Most welcome

[@ahmedmadkour]

Nice work my brother 😊 have a good day 🌻 give you super 👍

[@haseebelectronicsurdu]

thanks a lot dear brother

[@shirazahmed8308]

buhat hi aala sir.

[@haseebelectronicsurdu]

thanks a lot dear

[@kanchankondhare]

🙏💓सरजी आपकी शिक्षा से बहुत सीखने को मिलता है प्रणाम दीलसे गरीब stundent ko help karnekeliy Dhanawad pranam 💓🙏

[@haseebelectronicsurdu]

special thanks and best wishes

[@CookwithMahasina]

L2.... nice share 👍

[@divyanshpandey1145]

Sir great job. Vvvvv thanks.

[@haseebelectronicsurdu]

thanks a lot

[@muhammadishtiaq24]

Excellent thanks for sharing

[@haseebelectronicsurdu]

My pleasure

[@qaiserqureshi100]

MashaAllah, amazingly useful video
Big Like from London 🇬🇧💌

[@haseebelectronicsurdu]

Thank you so much 😊

[@ghulamrasul7499]

Excellent explanation

[@navinpatel3052]

Good information sir.

[@HarlavanisPanagiotis]

Amazing video dear friend!

[@haseebelectronicsurdu]

special thanks dear friend

[@navinpatel3052]

Good information sir

[@Asifsultanmehar]

Than___ks for nice sharing

[@haseebelectronicsurdu]

Love you dear brother

[@mubashirnoob5434]

Good information

[@haseebelectronicsurdu]

thanks a lot

[@fahimasghar6375]

Very Informative Video Haseeb bhai.
Please component ko pcb me check krnay ka tareeqa bhi bta dein.
Jazak Allah khair.
Wa Alaikum As Salam wr we.

[@imranmehdi111]

السلام علیکم سر کیا حال ہے آپ کا۔ سر میں آپ کی ویڈیوز بڑے شوق سےدیکھتا ہوں الحمد اللہ کافی کچھ سیکھنے کو مل رہاہے۔ سر میرے پاس ایک دس ایمپیئر کا ببیٹری چارجر ہے اس میں سے مسئلہ یہ ہے اُس کو بیٹری کیساتھ کنیکٹ کریں تو چند سیکنڈ تک بیٹری چارج کرتا ہے پھر ڈس کنیکٹ کردیتاہے۔ آئوٹ پٹ وولٹیج بھی 14 ٹھیک آرہے ہیں۔ مین ڈی سی کپیسٹر پر جب وولٹیج چیک کریں تو وولٹیج کم زیادہ ہوتے ہیں اور آپٹو کپلر پر بھی وولٹیج اپ ڈائون ہوتے ہیں۔ جبکہ آپٹو کپلر بھی چیک کیا وہ بھی ٹھیک ہے مین ڈی سی کپیسٹر بھی چینج کیا۔ لیکن مسئلہ پھر آرہاہے۔ برائے مہربانی اس کوئی سلوشن بتائیں۔ شکریہ

[@vijayakumarkumar9190]

Very useful information sir thanks for sharing this knowledge to us

[@haseebelectronicsurdu]

best regards

[@ElectronicUrdu]

Nice video sir

[@haseebelectronicsurdu]

thanks bhai

[@jbpowertronics7719]

Very nice 👍

[@shefqetkaralliu6816]

👍Grazie 🙏

[@haseebelectronicsurdu]

best regards and special thanks

[@jcsudeshchannel8224]

Gaining knowledge by yours efforts thanks

[@anjumali1854]

ماشاءاللہ سر سلام ہے۔آپکو۔قبول کیجئے۔جزاکم اللہ۔یہ کونسی ٹرم ہوتی ہے۔پش پل یا فلائی بیک۔؟

[@susantaatha6468]

Beautiful information. Thank you so much.

[@haseebelectronicsurdu]

So nice of you

[@udayuday7768]

Nice video sir thanks

[@hdiagram7534]

Good explain.india

[@haseebelectronicsurdu]

thanks and welcome dear

[@mithunsaha9456]

Thaks sir

[@satbiryadav4292]

Good morning sir very nice सर्किट डाई ग्राम कहा मिलता है आपका समझा ने का तरीका बहुत अच्छा है पलिज एक बार सर्किट से हाथ दुर कर दिया करो ताकि स्क्रीन कर ले

[@aanish2.094]

Aslmuailkum Bhai
Ramadan mubarik

[@haseebelectronicsurdu]

thanks a lot

[@home9tv1]

❤Nice

[@parvezpathan227]

Sir very nice video.sir. TFT LCD ka koi videos mein knowldege de ke back ligh kaise repair kare TFT ki

[@tapashaldar1506]

Thank u sir 🙏🙏🙏🙏

[@nayanjagirdar8408]

👌👌👌👍

[@haseebelectronicsurdu]

thanks a lot

[@altafmirza2114]

Sir don't mind I love you sir.

[@haseebelectronicsurdu]

Love you dear brother
Allah Aap ko salaamat rakhey aameen

[@kamranbhaivlog1328]

Nice g

[@haseebelectronicsurdu]

thanks a lot kamran bhai

[@amirtv9153]

Very nice information Sir 👍
Please tell me about best capacitors menufacturers

[@muhammadsaeed9169]

استد،نبر

[@bannucity]

sir diagram ke sath sath practical and tracing ki ashad zarurat hai hum yaha par new hai tracing main bahot prob hota hai please sir must for you to explain any prob hum ko practical and tracing ki zarurat hai only diagram is not complete

[@user-if9px8xf4u]

السلام علیکم السلام علیکم حسیب بھائی بہت ہی معلوماتی ویڈیو ہے
بھائی میرا ایک سوال ہے اگر ان اف ہو رہا ہو تو پھر کیا مسئلہ ہو تا ہے یعنی 12 وولٹ سپلائی ہے اس پے 5 وولٹ بنتے ہیں پھر اف ہو جاتا ہے پر اف ان ہوتا ہے اس کا کیا مسئلہ ہوتا ہے wts نمبر شیئر کر دو

[@ENGYASEEN]

Salam sir g me ney pehle b ap ko message kia tha please uc3845 ic ka short circuit and current control banaye please

[@anchorpanasonic9253]

Induction power supply ke upar video banaen

[@surajpatole3294]

Make video on orbitron 6000

[@user-ps4ft7vt9s]

جی استاذ کچھ وڈیو 30 امپیر چارجر پر بنانا چاہتے ہیں

[@kwsa4657]

dear sir inverter refrigerator video chahie

[@saa225]

Salam Ashraf Sb. Arif Akhter here again from Canada. May I ask a question, how can I find schematic circuit diagram for known brand faulty SMPS, while commercial supplies do not come with circuit diagram.
Your early reply is appreciated.
Regards
Syed Arif Akhter,
Brampton

[@amirmalik5668]

Sir mere pas 3 buck converter hain 300W k ,kea me unko parallel me connect kar k use kar sakta hun,,kea us k.amper b brah jyn gy,,me ne dc load chalana he

[@goutambose5258]

48v 15A smps battery charger ckt dia ke bare ak video banaya jiska pwm ic 2sg3525 ho. Thanks.

[@inamurrahim]

Optocupler pe agar 0.70 volt aa rahey hu to phir kya possible problem ho saktey hain.
Optocupler dusri side se direct karney se on ho jati ha

[@divyanshpandey1145]

Sir current sense resistor sabhi powersupply me mosfet, IGBT or PWM IC ke pas laga hota hai kya?

[@haseebelectronicsurdu]

yes dear
mosfet ki source pin per
igbt k emitter per
transistor k emitter per
IPM ki negative supply pin per

[@toseefhaider985]

Is smps supply me lgy choppr ko chk krny ka tareeka bta dy k wo sahi hy ya kharab hy ??

[@muhammadmekhalmekhal5932]

China charger 20 amp me sareh component teak hai lekin power on nahi hota lekin jab plug nikal detein hain tu aik bar power ki light on hoke band hojati hai?

[@Ghan972]

Sir 24v smps ko Bina lod ke on ho jata hai phir lod le leta hai. But lode connect kar smps on karane par on nahi hota hai output voltage 0 ya 1,2 volt aata hai

[@haseebelectronicsurdu]

please check vcc capacitor,
increase some vcc capacitor value
ya startup resistor ki value ko thoda sa decrease kr lein

[@sajjadhussain-ki5rb]

Sir mery pass AS3842 ic laga hooa hai ek smps power supply mien.
es mien 5 aur 2 number pins ground hain but 2 number pin to FB ki hoti hai.
Kya aisa ho sakta hai??
Out put mien fluctuation ho rhi hai.
But vcc voltage 5 to 15 takk fluctuate kr rhy hain. Out put capacitors. in put capacitor Diode. Tl431. Optocoupler. Vcc capacitor and Vcc diode and drysolde is good. But problem is still.

[@Mr_bishram]

Make a video on mobile phone fast charger qc 3.0 with diagram please 🙏

[@DiXit220]

Sir ji mere pass 5v,15v -15v ki power supply h 220 p oprate hone wali load se phle shi h but jese hi load dalte h tik tik tik ki awaj aati h captr bdl deye 3842 b bdl li pot b bdl deabut fualt nhi mil rha kya bta skte ho

[@atheist_happie]

My smps sometimes not start up or sometimes takes time like 1&2 minutes what should i do is my starting resistance or capacitor faulty ?

[@nadanali]

ustaz ye kaghaz par jo naqsha bana hy ye kaha sy mely ga

[@electronicslover1120]

❤️❤️❤️❤️❤️Amazing Sir, can u please tell me that how to find max operating frequency of output rectifier diode, like sr360, fr107 etc and can we connect two diode in parallel to increase rectifier current?🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏

[@atheist_happie]

Both diodes works fine of high frequencies so select your diodes according load you can use tvs diodes too..

[@atheist_happie]

But voltage difference is here in sr 360 you can get 3a on 60v and if you're using fr107 then voltage 1000v and 1amp and tell me where you want to use these diodes or which application so i can suggest you better options

[@electronicslover1120]

@@atheist_happie Thankyou for replying Sir, so for smps using uc3843, frequency is 450khz, so which diode can rectify at that frequency? and output voltage is 12v, 10A and aonther smps has output voltage of 12v, 2 amp

[@atheist_happie]

@@electronicslover1120 lots of options here u can use Schottky any but if you're output is 12v 10amp you can use mbr20100 comes with dual diodes 10amp each and can handle voltage upto 100v

[@atheist_happie]

@@electronicslover1120 for another smps sr360 will work fine for 12v 2amp output Schottky diodes can handle upto 1mhz frequency or more..

[@walirahman3159]

Respect sir 19 volt stable but after loading none stabling

[@raoabid7167]

Sir which type of power supply fluctuates without load?

[@soumyajitghosh4805]

Zebronics 12 v 10 amp smps ma 9 volt output da raha ha, or vcc capacitor per 1 volt a raha ha. Problem kaha ha please bataya..

[@nasirshaikh9520]

A's Salam alaikum janab .380 volt k smps ka48 volt niklta h usko hum 230 p supply deke 5/12volt nikal sakte he k nahi batao ...

[@haseebelectronicsurdu]

no.
aap ko us k chopper ki secondary winding k turns decrease kar k feedback circuit ko change karna ho ga

[@nasirshaikh9520]

@@haseebelectronicsurdu thank you sir As Salam alaikum

[@guljarkhan7573]

Please give LCD mother board detial.

[@motoe7plus308]

Sir 10amp power supply haimain capacitor pe 300 volt bante hai jab kr vccc capacitor pe volt fluctuation karte hai solution sir

[@tejaramprajapat2970]

Ser transfarmer rewarding kse ki jati h

[@koushikpramanik3716]

Sir aap kahase hai?

[@haseebelectronicsurdu]

mein Pakistan se hoon bhai
lekin abhi Jordan mein hoon

[@koushikpramanik3716]

@@haseebelectronicsurdu Mai India se. but apka fan hu

[@haseebelectronicsurdu]

welcome bhai ji

[@mohdasim1028]

buck converter round core calculation
12v24v36v48v72v /10A

[@user-cd9ts7te3j]

السلام علیکم
جناب کسی بھی بورڈ کا diagram۔ کہاں سے مل سکتا ھے

[@waqasmughal7320]

بحت آ لا جاناب

[@haseebelectronicsurdu]

شکریہ بھائی

[@shahZaib-th1pr]

اس کٹ میں جو بڑا ٹرانسسِر شارِِٹ ھونے کی وجہ بتائ جائے

[@9629693052]

Hi dear salam I have 24v 10a power supply but output voltage after 10 or 15min it's going low to 20v,19v like what is the main problem main capacitor output capacitor and ss capacitor all ok