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How to make an adjustable power supply in 5 minutes
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- เผยแพร่เมื่อ 27 ก.พ. 2021
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(Potentiometer) bit.ly/3qHvE6L
18k bit.ly/37DFfUt
TL431 A bit.ly/2NOvs76
nice
Is it the list of part necessary for the job?
قيمة المقاومة المستخدمة كام ؟؟؟
Hi
@@essamfayez1566 100 كيلو أوم أخي
This video is a Godsend to us DIYers.... Thank you from the bottom of my heart brother... Much love from Bangladesh
Alhamdulillah.. tadi saya kira ini menggunakan transistor tapi setelah lihat datasheet ini bukan transistor tapi sejenis rangkaian gabungan transistor dioda yang kakinya di namai anoda, katoda dan referensi..
Selain itu saran dari yang coment bahwa elco output di tukar dengan yang lebih besar voltasenya, ya.. itu lebih bagus..
Keren bro
Quiet kid charger be like:
Greetings from across the pond from a fellow Romanian tinkerer such as yourself! Nice job!
As already mentioned before, the output electrolytic filter capacitor and rectifier MUST BE CHANGED for such higher voltage MOD.
Also other problems may arise depending on the circuit topology and implementation.
Personally I would not MOD a 5V P.S. for more than 9V.
Yes, I was expecting it to pop when it went above 12V. This video also lacks explanation. Do you happen to know why zener diode and why this stabilizer was was soldered the way it was (I mean pinout relative to potentiometer + resistor).
Let me start out by saying ты жжешь.
I cheated I use a translator but I want to thank you for translating this into English it’s most helpful when you can understand something in your native tongue and duplicate it with instructions.
Again thank you again for this great idea it will prove to be very useful on quite a few projects that I have that need to be controlling the voltage output.
its dangerous to use as you go over the limit.change the output electrolytic capasitor to 25v before use.
I agree.
..otherwise the small value cap gonna be explode
You can change with a 25 voles capacitor as i did!!!
Totalmente de acuerdo contigo.
If change it to 25v electrolytic capacitor, how much is the uf?
I am not sure if the output electrolythic capacitor of 5V power source is rated for 15V. I would change it.
Yeah, this is the first thing I thought about after it exceeded the six volts. That's make it a fire hazard. But overall, the idea is as good as always.
Great, this idea is extra ordinary. Thank you very very much
What an awesome video! The easiest power supply one I've seen!
Thanks .. but for next time .. replace the output filter capacitor as well
I need to say that is a nice idea (I made it to adjust some rare transformer to different operatus). But you need to know that the good way to process is that it's dangerous to reach twice or more the initial value. Voltage regulating here comes from a PWM wich change duty signal to provide highter voltage. First HV circuit is not made to work in that range of tight pulse. This is the reason why you must use this tip to have voltage as less as you want, but for reliability and safeness, don't reach more than twice the value... This primary circuit is not design to regulate until this point.
Very very useful video.thank you dear.please make this type of videos in future.long live,god bless you dear.
The output capacitor value should not be less than the output voltage, otherwise, it will explode. You need to carefully check other components effect when you change the voltage. It may be useful in some cases, but it needs knowledge and understanding of components, current, voltage and ohm law.
If 12V adaptor stepdwon to 9V is it safe?
@@firmanhidayah9480 Hell YES ☑️
Great idea but make sure those caps are rated for at least 15 volts. And it would be better if you explained the theory of operation as well.
true, most cheap ones you find like this have 10v rated output caps if its a 5v supply, so thats definitely something to also switch out or it wont last long.
I don't know man. I looked inside my trashcan. No knobs. No stickers. I couldn't find anything I could describe as "cool", or "cool looking". It was mostly just various kinds of food packing materials, just like the stuff I buy at the grocery store comes in. There was some spoiled leftovers too, but it didn't seem like the value they bring my power supply project warranted digging them out. Full disclosure, I don't have the trashcan's manual, and can't verify if I'm actually having a technical problem, or if it's just user error, but I feel like I'm using it right. My guess is it's just broken
Very Nice will doo for my crazy stuff
thanks this helped a lot I've been looking for exactly tis for a while
Add a digital screen to see the voltage and you'll ve my hero!
The circuit using TL431 is very inefficient.
Original adapter can only be used up to 2A, 6.5A can't be taken out.
The circuit will burn in few minutes.
@@manuelc4746 No te entendio Manuel, hablale en ingles, Manueeel!!! no te arrimes a la pared que te va llenar de caa caa caaal
@@manuelc4746 Aprovecho que ví el texto en Español y le pregunto sobre los componentes electrónicos., ya que se me dificulta entender Inglés y el diagrama no menciona sobre las características de la resistencia variable (potenciómetro).
Por otro lado sugieres también reemplazar el capacitor?
Gracias y saludos desde Argentina 🇦🇷👍
It's not because of the TL431, it only gives a reference.
In any system if you raise the voltage the max current will be lower, but if you know the maths then you know that 5V 2A gives the same power as 10V 1A.
@@szaki95 just hook up two chargers in series xD
Even if this charger uses a Shottky diode, the thermal power at 6A x 0,4V would be high enough to melt the solder off the PCB ((( or burn the diode down, because there is no heatsink. Also I doubt the transformer wiring would accept such a high current.
Nice to see you again.
hi.interesting new friends here.good show new ideas more keep it up sir
Incredibly helpful, thanks so much
Pretty cool
I really liked this one
Thanks supper 👍🏼
Thank god I found this before buying my new pc’s power supply
NO, don't do it. The Amps Ratings may not match and you will damage your pc :((((((((.
Is this a very stable current?
Beaultiful Aways Tanks
Impressed.
A very useful project.
Big fan ❤️❤️❤️❤️❤️❤️
Good evening sir ji thank
Very very nice video
Super useful message from davangere smart city karnataka state 🇮🇳india
Great and simple 👏👌
Beautiful
Please upgrade with voltage display metre
Love from india
Best video ever.
Thank bro
Brilliant
That is, indeed, quite useful.
i,m gonna make a 10 channels of this adjustable power supply, because i,m going to power up 9 plug in led bulbs, and e27 12v led bulb, and use them to light up a library!
Very cool......thanks!
I would solder the metal case of the Poti to the 240v live wire, so it can't touch it by accident. In this case at least you can be sure touching it is dangerous
make adjustble power supply from bigger voltage to smaller voltage it will be better for exemple customise a 24 v power supply that can go to 5v
Nice Job 👍🇬🇧
Great idea sir 🤩🤩✌️
Exsellent...
Long time fan and another great video
Good work, but could you say the current at 3v and 15v. It was 5x2.5 = 12.5W, so is current linearly increse from 3v or it is constant. Thanks.
Good ,useful technology
Thank You and Thumbs up! 👍
Does the Amperes also change
Nice content, and I am going to build a similar unit for the same purpose.
👍👍but: How to open such a sealed housing without damaging......
Nice Video.
I tried to apply this on a printer power supply that gives 34v in normal, and guess what?
The potentiometer has lighted up my room LoL!!
it was so wonderful!!!
Amazing video👍
Whqat a fun project and so useful. Thank you and I just subscribeed.
The best of the best
Great idea.
This is a good one 👍
Very nice and informative video. I think english is not your first language and I thank you for making an english version. But having one language superimposed upon another language makes it very difficult to understand. I think it would be better to use your native language with english subtitles instead. I hope you view this as constructive criticism. The video is great and I really liked it. Thumbs up.
Good idea
Vou segui aulas com vocês
Hello, we have an agricultural land that has no electricity. Now, if we want to use a motorcycle battery, which is 12 volts, to get different currents, such as 10 or 12 amps, what transistor should we use?
Nice good, thankyou
Good
Thank you bro
Wonderful!👍
Great solution to resurrect old power supplies but Please ba aware that usual in Chinese Power supplies output capacitors are only bit higher than nominal voltage. If you will have constantly 15V having "stock" 6,3V capacitor your power supply will not live long time.
good work but you must replace the output capacitor because its may be explosion .
i think this capacitor replacement ,give it a thought and then proceed.
ok
Perfect!
hola buenos días, que potencia en amperios entrega..? es para motor de 2 ha.
Soo, well it overheat? Or go BOOM?
Because I think the output capacitor is not rated for that.
Very Cool Idea, You Know why don't You Add The LED In The Hole You Made That You Had To Cover Up, Unless There's No Room
For It, Or IT Might Take Some Power Away From Your Directive, Or Function, You Can Make Adapter To Adapter Conversion's For TV'S, Radio's And So On, I Think That Would Make an Excellent Addition To Your Idea, Awesome Idea, I'm Hooked, You Have a New Fan, Peace Out .P. S. What do You Think ?.
I tried but Boom,,💣
Then i increase capacitor to 25v volt, without resistance, again Boom when potentiometer is on full. How can i limit the voltage to within 15v so that it doesn't blow when i turn potentiometer full.? Does 18k resistor help me for it? I need power supply of 13 to 14v for 3s bms to charge 18650 batteries
Woww amazzzz😍😍😍🙏🙏🙏
Your videos are very interesting but can you please mute the Polish when you record the English translation, it is very difficult to listen to it like that. Thanks.
It is a new way to learn Polish
This is not Polish language. Roman's native language is Russian.
@@michagalinski8261Thanks. Unfortunately I can’t tell the difference.
Awesome!
Bravo brader
It was relly great and i made it which works very well !!!
Although my board was a little differens your boad!!
By the way i changed capacitor with a 25 volts. Best regurds.
which capacitor you are talking about I could only see him using resistors
This is very amazing sir.
very cool. very useful !! im gonna sub!!
and the output capacitor is 1000uf/16v, and boom
Use atleast 50v 600 to 1000 uf capacitor, as tl431 works within 36 v , then there is less chance to BOOM. Remember to use tl431 or zener diode otherwise there will definitely Boom in abscence of zener or tl431
Tg u for shareing..👍
Would you post the schemes?
And the PS led?
what if the rectifier diode was no longer in the circuit?😊
Super!
Perfect
What about the main power capacitor.... It's designed to support 5.0 voltage output, now you're taking 15 volt as output... so you should have change the capacitor also....
Bro. It's a fantastic idea: very useful gadget. Superbly done. Bro. Good luck for all the future projects.
Isn't this kind of dangerous, because components on the AC side are added and mounted outside?
You did even mention to check on the maximum ratings of the other components. That's extremely dangerous!
Muy util
Wow 🤩👍👏👏👏👏❤️
faz um vídeo como aumentar a amperagem
Can it charge battery🔋
Pls makSir pls make video on home Appliances like 2tons Ac .etc. for save electric watts unit that can reduce electric units