How To Convert Laptop Charger To Variable Power Supply
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- Опубликовано: 6 июл 2022
- In this video i am going to show you how to convert fixed voltage adapter to variable power supply.
If you have a laptop charger, you can convert it into a adjustable power supply 3v to 36v dc.
DC power Brick
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Dans cette vidéo, je vais vous montrer comment convertir un adaptateur à tension fixe en alimentation variable.
Si vous avez un chargeur pour ordinateur portable, vous pouvez le convertir en une alimentation réglable 3v à 36v dc.
Sa video na ito ipapakita ko sa iyo kung paano i-convert ang fixed voltage adapter sa variable power supply.
Kung mayroon kang laptop charger, maaari mo itong i-convert sa isang adjustable power supply 3v hanggang 36v dc.
এই ভিডিওতে আমি আপনাকে দেখাব কিভাবে ফিক্সড ভোল্টেজ অ্যাডাপ্টারকে পরিবর্তনশীল পাওয়ার সাপ্লাইতে রূপান্তর করতে হয়।
আপনার যদি একটি ল্যাপটপ চার্জার থাকে তবে আপনি এটিকে একটি সামঞ্জস্যযোগ্য পাওয়ার সাপ্লাই 3v থেকে 36v dc-এ রূপান্তর করতে পারেন৷
在本视频中，我将向您展示如何将固定电压适配器转换为可变电源。
如果您有笔记本电脑充电器，您可以将其转换为 3v 至 36v dc 的可调电源。
In questo video ti mostrerò come convertire un adattatore a tensione fissa in un alimentatore variabile.
Se disponi di un caricabatterie per laptop, puoi convertirlo in un alimentatore regolabile da 3 V a 36 V CC.
In deze video laat ik je zien hoe je een vaste spanningsadapter converteert naar een variabele voeding.
Als je een laptoplader hebt, kun je deze omzetten in een regelbare voeding van 3v tot 36v dc.
In diesem Video zeige ich Ihnen, wie Sie einen Festspannungsadapter in eine variable Stromversorgung umwandeln.
Wenn Sie ein Laptop-Ladegerät haben, können Sie es in ein einstellbares Netzteil mit 3 V bis 36 V Gleichstrom umwandeln.
Dalam video ini saya akan menunjukkan kepada Anda bagaimana mengubah adaptor tegangan tetap menjadi catu daya variabel.
Jika Anda memiliki pengisi daya laptop, Anda dapat mengubahnya menjadi catu daya yang dapat disesuaikan 3v ke 36v dc.
ഫിക്സഡ് വോൾട്ടേജ് അഡാപ്റ്റർ എങ്ങനെ വേരിയബിൾ പവർ സപ്ലൈയിലേക്ക് പരിവർത്തനം ചെയ്യാമെന്ന് ഈ വീഡിയോയിൽ ഞാൻ നിങ്ങളെ കാണിക്കാൻ പോകുന്നു.
നിങ്ങൾക്ക് ഒരു ലാപ്ടോപ്പ് ചാർജർ ഉണ്ടെങ്കിൽ, അത് 3v മുതൽ 36v ഡിസി വരെ ക്രമീകരിക്കാവുന്ന പവർ സപ്ലൈ ആക്കി മാറ്റാം.
در این ویدیو قصد دارم نحوه تبدیل آداپتور ولتاژ ثابت به منبع تغذیه متغیر را به شما نشان دهم.
اگر شارژر لپ تاپ دارید، می توانید آن را به یک منبع تغذیه قابل تنظیم 3 ولت به 36 ولت dc تبدیل کنید.
W tym filmie pokażę, jak przekonwertować zasilacz o stałym napięciu na zasilacz o zmiennym napięciu.
Jeśli masz ładowarkę do laptopa, możesz ją przekształcić w regulowany zasilacz 3 V do 36 V DC.
Neste vídeo vou mostrar como converter adaptador de tensão fixa para fonte de alimentação variável.
Se você tiver um carregador de laptop, poderá convertê-lo em uma fonte de alimentação ajustável de 3v a 36v dc.
En este video, le mostraré cómo convertir un adaptador de voltaje fijo a una fuente de alimentación variable.
Si tiene un cargador de computadora portátil, puede convertirlo en una fuente de alimentación ajustable de 3v a 36v dc.
ఫిక్స్డ్ వోల్టేజ్ అడాప్టర్ను వేరియబుల్ పవర్ సప్లైకి ఎలా మార్చాలో ఈ వీడియోలో నేను మీకు చూపించబోతున్నాను.
మీరు ల్యాప్టాప్ ఛార్జర్ని కలిగి ఉన్నట్లయితే, మీరు దానిని 3v నుండి 36v dc వరకు సర్దుబాటు చేయగల విద్యుత్ సరఫరాగా మార్చవచ్చు.
اس ویڈیو میں میں آپ کو بتانے جا رہا ہوں کہ فکسڈ وولٹیج اڈاپٹر کو متغیر پاور سپلائی میں کیسے تبدیل کیا جائے۔
اگر آپ کے پاس لیپ ٹاپ چارجر ہے، تو آپ اسے ایڈجسٹ پاور سپلائی 3v سے 36v dc میں تبدیل کر سکتے ہیں۔
laptop charger to adjustable power supply
laptop charger to variable power supply
laptop adapter to variable output
laptop charger to 5v
laptop charger to 12v
laptop charger to 24v
laptop charger to 12 v battery charger
#laptopcharger
#adjustablepowersupply
#electronics #fixedoutput #adjustableoutput #adapter
Great sir..! I was searching for such handheld supply from hall road lahore .sir you operated the laptop power supply nice and easy . stay blessed!
Very good expa__n
Jazakalla khair.
NoooOooo man! Looks like an amazing video, but please why no English subtitles?!?!
Shandaar ❤
Nice tutorial ❤ thank you
Pls do change secondary filter capacitor to 50 volt
Thanks so much mr.tarq
Nice explanation, but one warning is missing: Check the voltage of the output capacitor. When you cross them, you can be sure that one day it will explode.
OT: The TL431 can replace the zener voltage control.
OT2: If there is no zener diode / TL431 on the secondary side of the power supply, then maybe you've hit the treasure. In my case there was the TSM101AC (sop-8) chip. After looking at the datasheet, I found that there is also a possibility to regulate the current.
mine has a TSM101AC with 817 optocoupler. but i stiil can't figure it out to make it adjustable. Do you have a video for that?
@@danniananta199 Sorry, no video. But look into datasheet on page 10 (EVALUATION BOARD - TECHNICAL NOTE) - there is all explanation.
You need replace R6&R7 (high precision, more digits on it) "Middle" point is connected to 7 leg of TSM101AC. Fot R6 I'm use 720Ohm, and for R7 2,75kOhm shift + 20k potentiometr.
In my case there are two optocouplers and ic Ap4310.
Also there is no tl431.. how can i trace the feedback resistor?
Please help
First of all, I would like to thank you for the enlightening and educational information. I have a 19 volt laptop charger, is it enough to replace the 3.9 kohm resistor with a 10 k potentiometer to adjust it?
Gracias Maestro, saludos desde Mataró Barcelona. 👍
de nada
Great idea, TY
ماشاءاللہ بہت اچھا کام کیا ھے.مہربانی فرما کر کمپیوٹر کی سپلائی کو اس طرح ویلی ایبل کا طریق بتا دیں جزاک الله
Set it to 4 volts and connect a load. You will see that it doesn't work. The IC on the primary side has UVLO (undervoltage-lockout) protection. When you set the voltage below 14 volts, it switches to integrated protection.
Merci beaucoup pour la vidéo c'est super cool 😎
Creative video, thanks :)
Ap load laga k check karwatey tou acha tha malomaat ho jati mazeed.good
Nice information sir
Aga 10k ka controller lagaye toh kya 330omhs ka resistor lagana hoga ?????
Info very helpful
Good explanation
Tariq saab, very well done. Can this be modified to do variable from 1.2V and up ? I am not too much concerned with higher voltage. Appreciate you sharing this information and vast knowledge.
1.2 v very low to operate the TL431 ic. U can use my other power supply that will work 0-18v when u give 18v from this type adapter
great bhai
Sir mere paas Dell ka charger hai to usme 3 se 20 Walt tak sahi chalta he lekin usse jiyada walt badhata hu to series bulb chalu ho jata he or jiyada der on rakhu to 470 mf 50 v ka cepasitor he fat jata he
اتمنى ان ينجح عملي مثلك سوف اقوم بتجربةهذاالمشروع شكرا جزيلا
Tariq Bhai aap bahot achhi tarah samzate Ho
Shukriya
Thanks. Pls list the items used
Was the three wiees from potiometer linked to the three leg of Lt431? Or?
Potentiometer center pin to tl431 pin 1, pot other one on gnd one on positive
Confunde que uses cables del mismo color..! Puedes mejorar ese detalle.gracias..!
GOOD IDEA
Kai yeh mobile testing main use hosakta hy kai
Sir kya amain apne car ka vacume 12v jo max 120w output wala h usko apne laptop k adapter se jo 90w 20v ka hain jo 4 se 5 amp output deta h kuch kharab hoga or kitne der chala skte h
Volt ziyada hain, 12v hi hony chahiye
Very good
Jis circuit me tl431 na ho us case me kia kreinge?. feedback resistor ka kese pta chlega?. please guide
Ye video tl431 wali ki hai
I tried opening two laptop chargers but could not find TL321 transistor. Useful video if you are lucky to have TL321 but most of the circuits doesn't have one. It would be better if you can mention the adaptor model and make.
It is not TL321 but TL431....
Yhi bat mere dost...TL431 not TL321
Is the voltage/current stable when delivering power to a constant load .
Same preset method is used when it giving 18-19v for laptop,
you must test it by a load like bulb 12 or 24 volt 30 watt or more to know if its stable or not
Yup, they are not stable at the higher voltages. But fine at or lower than their original output.
Good work
Thanks for sharing
ممتاز
Hello, how many kilos is the resistance that you connected to the potentiometer? And how many kilos is the potentiometer?
Potentiometer 5-10k resistor 330 Ohm
Will it's watts should remain same. ?
Mean if original if it is 18v and 2 amp
Will of give 12v and 3amp ?
8v or 4.2 amp ?
Yes
@@TARIQLAB Have you actually checked and measured that?
But this is not possible.
Power supplies designed for a certain fixed voltage value can work well with very close values but certainly not as distant as in this case.
If it's a PSU designed for 18v and 2A It won't be able to deliver the same power at 8V and at 36v, as, someone write here, at 36 you will blow the output capacitor which will not be at the proper voltage and other problem of switching at 8v or lower..
The switching power supplies capable of going from a few volts to 30 volts are designed taking into account this need and have adequately sized components, certainly more expensive and bulky components because they are suitable for situations in the two extreme limits
In one word: NO!
Sir I need to 1.5v up30v pls
Nice video
Great explanation.
Sir 12v 20amp battery charger ka banado Jo Kam is Kam 8v to 60v tak jata Hain ...
UPS / Inverter checkup kailia .
Please must replay
Jaldi try karon ga
@@TARIQLAB sir g Mai special waiting Mai hon ajj say ...
Q k mujai lazmi chahiya
Mai inverter technician hon
Inverters/ UPS checking kailia banata hon ...
🙂♥️
Good video. Just write me how many ohms is the resistor on the potentiometer? Thank you
330 Ohm
1 से 24 वाल्ट व 2.5 ऐमपियर का बनाया हुआ अगर आपके पास होतो हमे चाहिये कृपया प्राईज बताऐ व केसे हमे प्राप्त हो बताऐ
I have 24V circuit no tl 431 transistor? How can do variable volts.
find there will be a zener diode.
I did same but not getting exactly, perfect from 9-24 v, but fluctuating below 9 v. Any help ?. Thanks in advance.
I think potentiometer not good
Good
I did the circuit, indicator light of the unit flashes, as the out put keeps swinging from zeeo to 6 v, what did i do wrong!
mera adopter lagataar suply nahi de raha ruk ruk ke deta h Pulses ek second bnd ek second chalu...
You must know voltag, watt, then you can adjust the your required.
Ok
Pls our the components used
not precise at higher voltage and dangerous to operate like this, i gwill give you the best solution by using a range of fixed resistors for every voltage needed and a switch selector, its safe like
Can you teach me how to make a dc fan regulator
@@olarinoyedamilare5136irfz44n MOSFET with 10k pot and 25v 100uf capacitor will work
Good work and great information.. please provide your contact info . I want your advice on my laptop charger modification
Whatsapp in my channel's description
Çıkış kondansatörünun yüksek değerli bir kondansatör ile değişmesi gerekiyor yoksa 💥
evet haklısın, adaptörümde kondansatör 50v idi, bunun 50v olması gerektiğini belirtmeliyim
Volt Meter and emper bhee Iske sath video bana dee plz
Jaldi try karon ga
Assalam u Aleyikum.
Bhai maine resistance remove kr k, potentiometer lga diya hai, lekn voltages regulate nhi ho rahe.
Ic ki pin 1 potentiometer ki center se connect ho gi, potentiometer ki side wali pins aik + wali resistor aor dosri ground wali resistor ke sath lagy gi
Bhai ese hi lgaya hai. Main apko sari pics send krta hoo.
What is the value of the resistor?
330 Ohm
If i want another fixde 12v line then how can i do thise
If it has TL431 then all same
Can i use 500k potentiometer
Yes, may slow response
Bhai sb ampare ktny hain. Battery ampare par chg hoti hain volt to 12 hi boht hain
Charger ke jitny amps hain wo mil jaty hain
Assalam walikum
old laptop charger se 12 volt dc motor chalata hu to ruk ruk kar chalta hai. solution pleas
Motor voltage short kar rahi hai,
اتمنى الترجمة للعربية
а конденсаторы кто будет менять электролитические на холодной стороне, петя? выходное напряжение повысилось.
Checking voltage alone isn't enough!
You must connect a load test and show us the CURRENT it can supply at various voltages!
Regulation & amp controlled by primary side, lm431 is like a variable zener to feed back primary though optocoupler.
It gives variable regulated full amps.
@@TARIQLAB Where is the LM317?
You meant LM431?
HAVE YOU CHECKED THE CURRENT DELIVERY CAPABILITIES?
If so, please repeat that for us. Thanks!
Sorry for wrong ic number, that is tl 431.
@@TARIQLAB TL431CP. ;)
Exactly
Salve, se mi potessi fare tradizione in italiano lo ringrazierei. Comunque sei molto bravo
quello che ti serve
Ho un alimentatore 230v a 5v che non funziona più, ho aperto non riesco a trovare il problema
BONJOUR svp premièrement 1 je veut avoir un convertisseur de dc vers ac 12V DC to AC variable ( 3V 12V 24V au 30V AC) .
2 SVP je veut encor pour fabriquer un variable de AC to AC AC 220 V vers AC de 3V AC a 30V AC //// merci beaucoup
chemachema
hello i need to make a bench power supply 0.6 volt to 30volt can i use a laptop charger any one got a diagram
Disple kase lagaye
Power direct aor reading wire output pe lagana
Sir 32 volt ko 48 volt karna hy
Adapter hai, ?
@@TARIQLAB sir ji printar ki Powrsuplly hy
What is main ic number?
Which one
@@TARIQLAB smps controller
Dc volt miter lagaya hota to bahut achha hota bhai
Sahi bataya ap ne, aik dosry video main laga hai
ke hale tum tike ...
Cannot be done with 'name brand' eg: Asus, Compaq or HP. And exceedingly dangerous.
Possible with those models having TL431, have to replace output filter capacitor 50v
@@TARIQLAB You can't get into them. Sealed units. Almost have to destroy them to get them apart.
@@rodjackson9652 bro put some petrol keep in a box then try to open ☺️
الکاسب حبیب اللہ
Elvis Chennai
Welcome
Is it possible to translate it in Arabic so that we can benefit from it, please and thank you

In english please
Bhai me router or onu ka liye ak battery pack banraho..liken mera adapter thik thak voltage deta hai likin battery low hogeya tho mera adapter on of on of ho rahe..me kaise a problem solve koro plz
Adapter ke ampere kam hain
This looks like a very cheap quality circuit. I had an extra charger (Dell) that is very complex and also they have added lot of thermal adhesive on the components that makes it difficult to modify.
Tariq bhaie aap apna contact number daygy yea WhatsApp no
Channel description main hai
Thanks. Pls list the items used