{286} SMPS Output voltage Fluctuation / Switch Mode Power Supply Output Not Regulated

SMPS Output voltage Fluctuation / Switch Mode Power Supply Output Not Regulated. i explained in urdu / hindi language. smps output fluctuation term is used when the output voltage of switch mode power supply are not being regulated properly. irregulated amplitude of the output in any smps is called fluctuation
it may be due to many reasons
1. main dc capacitor is internally open circuit
2. vcc capacitor of smps ic is open internally
3. vcc circuit / bias circuit / auxiliary circuit is open circuit
4. output circuit have some short circuit capacitor
5. feedback circuit is not working properly, it may be due to reference circuit, TL431 reference, or optocoupler or its related components
#electronicscreators #smpsoutput #fulctuation
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in this video i demonstrated How To Repair Switch Mode Power Supply SMPS When Low OutPut Voltage & Fluctuation. it is a KA7500 / TL494 based push pull topology power supply, in this power supply that output was 5 volt instead of 12 volt. the output was unregulated and fluctuating. i found both smoothing dc capacitors open circuit. i replaced the capacitors and the supply started working normally.
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
fuse keeps blowing
how to repair switch mode power supply when short circuit at input
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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smps, repair, troubleshooting,
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[@FarhanCableWala]

8:12 🏆🇵🇰

[@haseebelectronicsurdu]

thanks a lot

[@mohammadrashidansari3750]

Aapka har vedio bhut kuch sikhata hai...Hmne to apna shauk aapke vedio dekhkr hi pura kr rhe hai

[@haseebelectronicsurdu]

thanks a lot dear brother
wish you best of luck

[@noninomivlogs]

Nice sharing big like

[@kmhovlog6185]

like wowso great super informative video great skill job thanks for sharing

[@haseebelectronicsurdu]

So nice of you

[@HarlavanisPanagiotis]

Wonderful video dear friend, have a happy weekend!

[@haseebelectronicsurdu]

Many thanks

[@muhammadishtiaq24]

Excellent explain thanks for sharing

[@haseebelectronicsurdu]

best regards

[@santoshjha7935]

Very good explain

[@haseebelectronicsurdu]

Thanks and welcome

[@navinpatel3052]

Good idea sir.

[@haseebelectronicsurdu]

Best regards 💝

[@The.warrior.]

Masha Allah bhut aala

[@haseebelectronicsurdu]

thanks a lot dear brother

[@muhebullahdurrani6086]

Nice video sir thanks

[@haseebelectronicsurdu]

best regards and special thanks

[@dr.qaisarabbas6127]

good job bro

[@haseebelectronicsurdu]

best regards and special thanks

[@pravinpadhiyar2]

Very nice video sir thank you 💝💝💝💞💞

[@haseebelectronicsurdu]

best regards and special thanks

[@shakirzia8631]

Asalamoalacum sir gee main takreeban har video dakta houn samjhanay ka anaaz bhot he acha ahi very naice sir power supply main output ka shoki daiod power supply on karain to full heet ho jay to kasay theek karain plece rahnumi farmain

[@azankhan1433]

ماشاءالله

[@haseebelectronicsurdu]

best regards and special thanks

[@DrKhakeeBaadshah]

nice job bro

[@haseebelectronicsurdu]

best regards and special thanks

[@hdmc8883]

Jazakallah 🌹🙏

[@haseebelectronicsurdu]

best regards

[@tusharb9664]

Sir Aapke sabhi video bohot helpful hai
Mujhe Mosfet and Transistor Kese work karte hai... Induction cooktop me mosfet kyu short(Burn) hota hai baar baar .. Ye kese pehchane..
Sir please aise video banaye jisme live current testing ho.. Supply me ham start se end tak koun koun se components par live voltage check kar sakte hai..please bataye
Because ek smps supply me 2.2 m ohms ke resistor bad hone se ye fault pehchanne me atleast sabhi main components change kiye tab jakar 3-4 hours baad last me resistor change karne ke baad supply repair hua.. yadi live testing me current pass kaha se kaha hua ye check kar lete to shayad itna time nahi lagta..

[@muzammilshaikh3194]

Mashallah

[@haseebelectronicsurdu]

thanks a lot

[@muhammadfarrukhsial6118]

Thanks for uploading great video as always.
You are a great source of guidance for all Power Electronics students and professionals of South Asia.
I follow your videos from Australia.
Can you please make video on step by step guide to troubleshoot any faulty board (including finding short circuits, purpose of resistors, capacitors, inductors, RC networks, LC networks, important Transistors, and other essential components etc.)
Appreciated!

[@rahulpatelgujratahmedabad3497]

🆎🕉️🕉️GOOD TEACHING FOR YOUR CHANNEL🚦THANK YOU SO MUCH VERY VERY GOOD 👌👌👌👌👍👍👍👍💃💃💃💃

[@haseebelectronicsurdu]

You are welcome!

[@AliRaza-qh5of]

Haseeb bhai

[@haseebelectronicsurdu]

best regards

[@nayanjagirdar8408]

👌👌👌👍

[@haseebelectronicsurdu]

best regards

[@sandeepmane2983]

Very nice explanation for this 😊🙏
Will you please make/explain a video of 12v Module which is attached with this type of SMPS, when the IC was burn out. I can't understand what is that concept...... 🙏
Thank you

[@meharimran86]

please make a video on the multimeter and how to test all the components. PLEASE. AND THANKS

[@rakeshpatel4561]

Nice videos sir

[@haseebelectronicsurdu]

thanks a lot dear

[@krishna91771]

Super

[@haseebelectronicsurdu]

thanks a lot dear

[@electroniquepassion]

👍👍👋

[@haseebelectronicsurdu]

best regards and special thanks

[@cakeaudio2611]

12v to 40.0.40 Tl494 Dc to dc conveter pe ek video banao car amplifier ke liye.with voltage feed back and current feedback jo

[@faqirbadshah1899]

اسلام جی ac.dcسلینگ فین سرکٹ کے بارے میں معلومات فراہم کرو ڈایاگرام کیساتھ شکریہ

[@The.warrior.]

Sir mujhe is kaam ka bhut shoq hai kash apky sath kaam ka moqa aur time mile mein sekh k apna kaam shuro karna chata hon kuch knowledge bhi hai aur kaam b kiya hai lekin kafi limited

[@haseebelectronicsurdu]

wish you good luck dear brother

[@jcsudeshchannel8224]

Thanks

[@haseebelectronicsurdu]

most welcome

[@AliRaza-qh5of]

Love you

[@haseebelectronicsurdu]

thanks a lot
i will explain ups modules

[@rakeshsavsani7233]

aap LCD LED ke acording pfc ya normal power supply mein optocopler ke hisab se voltage aur regulation ka ek video please Sar banaa dijiye

[@susantaatha6468]

Beautiful information. Actual value 100MFD but when we are testing with multimeter then value showing 125MFD what is reason. Please sir explain.

[@pravinpadhiyar2]

Sir voltage ampere watt calculate karna sikhaiye

[@electronexrlcplc3205]

Aoa
Plz make a video on pc power supply ,to make 0 to 15 dc volt variable power supply.

[@my15pluse21]

Assalam-o-Alaikum,
Sir aap ne Jo cap removed kiye wo 16volt k thy magar aap ne Jo cap lagaya wo 63volt tha sir ye thora sa explain karden.
Jazak ALLAH

[@kmhovlog6185]

good morning

[@haseebelectronicsurdu]

Same to you

[@iffee100]

AOA, I have a question. As SMPS works with a certain range say 90-240 volts. Is it better to operate it with lover voltages? for example120 VAC instead of 230VAC. I want this arrangement for safety and longer service of the power supply. what do you recommend?. Regards

[@sonysounddj323]

Sir hi-fi audio amplifiers ke liye smps sahi hai please tell me

[@LEGEND_JATT444]

Sir mere pas laptop ka power adapter ka ic nd feedback transister jl giya hai and ic ka number b nhi pta.sir ab os mein kon sa ic ja module lgayga.plez help sir

[@raahedil3908]

Sir mere Laptop charger mein output 18v show kar raha hai lkn load dalne pr 12v k qareeb chala jata hai or 18v par ata hai phr dubara 12v pr chala jata mene check kra to ek part mila jis pr code ye likha tha (FCHS20A12) is ke andr voltage tezi se upr niche ho raha tha.....

[@yashjasnani4466]

What if the problem is in feedback network like resistor or TL431, i had one smps whose capacitor were good but there was something eles going wrong

[@anithakrishnamoorthy4666]

Sir i m doing a project in full bridge dc-dc converter. In that the output of switch voltage has double switching can u suggest how to avoid it thank u in advance

[@malikrizwan1000]

5 volt 55amp ki supply hai 4.40 de rhe kia karon???

[@haseebelectronicsurdu]

try to check its output feedback system,
or you can send a picture (pcb front & backside) to my whatsapp [phone]

[@mohammadrashidansari3750]

Asslamu alaikum
I m from india
Sir koi mobile charger ya smps jiska circuit Bhut small ho uspe steps by step voltage check krna sikha dijiye...
Aapne jo smps me step by step sikhaya hai wo circuit bhut lengthy hai jis wajah se smjhne me bhut prpBlem aar rhi hai...Bhut zyada waqt lagane paR bhi vedio ka pura faida nahi mil pa rha hai....
Plz koi small pcb smps circuIt ko waise hi step by step fault finding bata dijiye...
Plz bhaijan...

[@mohammadrashidansari3750]

Sir ye desolder machine ka price kitna ka h

[@haseebelectronicsurdu]

is ki price 3000 US Dollars.
6 Laakh Pakistani Rupees + Custom Duties
3 Laakh k qareeb Indian Rupees + custom duties

[@MubashirMughal-kb8fe]

I need igbt solar inverter curcut diagram

[@aniketkushwaha4296]

Bhai mere paas ek adapter hai jiska pehla to automatically band ho jata tha phir wo bilkul band ho gaya to kaise repare karoo
Kabhi kabhi chalta tha phir phir wo bilkul hi band ho ,hanth se dabaya to chalne lage

[@AliRaza-qh5of]

Dasi ups jo pakistan me chalty hain us k module ko repair krny ka treka us ki kit ko or ups bnany ka tareka btyae mera nahi khayal k TH-cam pr koi aysi video ho

[@tecjoydev6993]

Sir SMPS pwm chip IC kharaab ho jaye to repair ho sakta hain kya ?

[@haseebelectronicsurdu]

No. it is just to be replaced

[@tecjoydev6993]

@@haseebelectronicsurdu chip ic market main nhi milta app kuch upai nikalo mera 10 amp ka smps kharab hua pada ha

[@santhsridevaramji9974]

All ic mospet transistor data seat app link sar

[@rakibulahmed6969]

Ap ho kaha se ?

[@AliRaza-qh5of]

Mujhy bta dy ap bnaye gy...!!!

[@haseebelectronicsurdu]

yes dear i will

[@vishalsainl]

Good morning sir
Scooty charger 48 volt charger
Primary section chal raha hai
Par secondry par 1 bhi volt dc nahi
Aa raha hai
Series' bulb lagane par ,bus 1 bar bulb blink karta hai
Pls help
P

[@vishalsainl]

@Yasir Ali 🙏 thanks

[@AliRaza-qh5of]

Haseeb bhai mera reply dyna hai

[@haseebelectronicsurdu]

okay bhai

[@ManojKumar-yz5om]

Bakwass

[@haseebelectronicsurdu]

Oh really
did you tried this trick
basically it was a question from my viewer

[@navinpatel3052]

Good idea sir.