Turn Any Fixed Voltage Adapter to Variable Voltage Output (3V - 24V)

[@TechIdeasAG]

Turn your mobile charger to variable output (3 - 12v) kzbin.info/www/bejne/jnW4hImNqLJras0

[@healer1000040]

Please don't use annoying background music.

[@SAbdullah03]

I only needed to replaced that +ive side 75K resistor with 100K pot... and viola now I'm getting 24V from a 19V supply... Thanks a bunch. 😁

[@weazeldark3983]

Aslong as the low voltage side is rated for 24v instead of 19v Led and caps and other such things might not be and blow or overdrive n wear out prematurely

[@popepaul4438]

Very useful for me as I am a novice at Electronics I don’t think anybody is showing the sort of hacks keep up the good work look forward to the next one and hi from the UK

[@pankajB66]

There is one Bangladeshi guy did this about 1 year before. I made it 6 months back. But the problem is that with the increase of voltage at the output, current reduces drastically. You will get good output power only for a small voltage range. Or you can take a power supply of old laptop charger, that gives you great stability. New laptop chargers are complicated, it's not simple in there.

[@andreasbrandstetter9221]

The Sticker says 2.0mA 😂 nice china quality

[@8itrdchytghhuuyggg]

😂😂😂😁

[@kolejowydolnyslask5684]

XD

[@neo_smith]

Made in India label, this product is obviously made in China but the label is rare and does not show that it comes from China. Indians are boycotting Made in China. They need a label but it can't have the trace of Made in China.

[@BomJimmy]

They are really busy in mass production. Their instruction manuals are full of grammatical errors.

[@nickwong9493]

I replay the video to check on the output and noticed that too ROFL

[@impossiblescissors]

I like the idea, but it's probably easier to ad a buck or boost converter to cut or increase the voltage.

[@madhusudangupta3661]

The circuit lay out fir the project is always helpful for construction of the project. Kindly add the circuit diagram. Vdo instructions are not enough to notice the exact modifications.

[@neelkanthkalgaonkar788]

You have not mentioned rating of output capacitors. Out of originals, one is of 1000 mf and the other of 470 mf. You are replacing one as 470 mf and other as 220 mf. You are silent on values of them. You will agree that the value matters significantly. Similarly you are silent on the max. rating amperage capacity we can get from 3.0 v to 24 v subsequent to modification. If possible please clarify on these points.

[@Teknopottu]

Interested too on this fact.

[@defendukraine181]

Probably 1.5 to 2 amps

[@WilliamAshleyOnline]

well the capacitor is charged, so it would be on the drain, so wouldnt the amperage be variable to the voltage? Higher voltage lower amperage

[@WilliamAshleyOnline]

​@Thekillerdog nah dc is direct current where as ac is alternating current meaning it is switching... dc voltage is square forming while ac is more sinusodal. remember that if the resistance is the same then amperage will be relative to the voltage.. however when it is on a load device then the watt formula is applicable for power generation. more or less a load acts like a resistor, however the load will also draw the drain of the system, draining may generate heat depending on the efficiency of a non superconducting circuit.. resistance loss and heat tolerance is relative to the bandwidth of low resistance transfer however the load will only drain as much current normally as it can draw. Hope this makes sense.. just understand that capacitors have a charge and drain rate.. the whole farads and voltage factor they are acting as a battery of sorts, capacitors themselves can only draw so much power in time and they can only discharge so much power in time. A 1-farad capacitor can store one coulomb (coo-lomb) of charge at 1 volt. A coulomb is 6.25e18 (6.25 * 10^18, or 6.25 billion billion) electrons. One amp represents a rate of electron flow of 1 coulomb of electrons per second, so a 1-farad capacitor can hold 1 amp-second of electrons at 1 volt.

[@WilliamAshleyOnline]

@Thekillerdog good to hear

[@RinksRides]

This is great! As I literally have a small mountain of these in my basement

[@veesoho93]

Nice work, but if its rated for 12v 2amp, and you crank the voltage without limiting the amp output accordingly you risk of burning out the circuit no?

[@LuciferMorningstar666-e1s]

Kya?

[@KnightTamila]

Definitely yep, good work china, it doesn't supply 2amp ,

[@jayjoseph2890]

GREAT BROTHER 👍❤️👍

[@md.mijanurrahman8344]

initially the adapter sticker says it 2mA, after upgrades you can't shows how many amps are supplied?

[@thenarrowgate3063]

Nifty idea but is it really safe if onesn using it constantly at 24 volts say?

[@james10739]

Sure I mean watts is what you will really have to watch out for it was 12v 2A so 24 watts so 1amp at 24v should be fine but you might give yourself more margin on the caps

[@james10739]

But also you can't do that with all power supplies I took a 12v one that was a cheap Chinese Xbox power supply and I was able to go from about 8 to like 19 before it would shutdown on its own and you bring it back and it was fine I don't remember the current but it was good for a couple amps

[@luizfernandolessa1889]

Boa noite e obrigado pelo vídeo bem explicado. Se eu quiser pôr a voltagem mínima em 1,5v, teria que mudar algum componente interno que é a referência? quanto ao último resistor introduzido ao circuito, não entendi onde foi colocado e qual o valor dele. Se puder tirar-me a dúvida...Obrigado desde já e forte abraço do Brasil.

[@MichaelSmith-ex5tt]

He attached it to the bottom of the board leads of the other resister.

[@ponnambalamvasan6886]

Amazing invention excellent explanation 👏👏

[@shubhagar4332]

I think u have a deep knowledge of pcb board ,, i can't make such changes without knowing,,is there any way learn how...?

[@pinkponyofprey1965]

Damn! That was a smooth operation! :D

[@Silkroad_trader]

Current 2 amp hi rahega...?

[@lebronmalakas8685]

This is legit!i try it and i realize im never need buck converter now! 😊 Edited I try multiturn trimmer and its the best potentiometer for slowly moving of voltage 100k is value 19v adaptor playing around 2v to 30v

[@mdriyasatali]

Par kya isme AMP me koi frk padega ???

[@Kncperseus]

Welp, awesome vid as usual mate, but here's a little tip: if you're gonna use loud background music, but speak with a really low voice, a better alternative would be to simply not talk and write down the things you are doing in the video. Otherwise great job as usual. Cheers.

[@BS_1973]

Good work... But where to get lcd display?link plz

[@dixson1978]

What is the temperature of your soldering iron ? Thank you.

[@Terrestrial..1]

Voltage regulators don't work with modern electronic light bulbs, only the older types as they require a set Voltage to run.

[@MagicSmoke11]

What is the exact change needed here ?? .Also, can this technique can be extended to Adapters which use Zener diodes for buck voltage ??

[@waltercomunello121]

no. a bunch of changes to the circuit should be done, such as adding the variable voltage divider to give the reference voltage to the TL431. it's not advised to make any changes to circuits such as these, because it would void the warranty and there would be no guarantee that it could work outside its factory ranges. the mod is pretty straightforward - replace the two 16V caps with 25V ones (I'd suggest at least 35V just to be safe), remove the two reference resistors and replace one of them (the closer to ground) with a fixed 2.2kOhms and the other one with a potentiometer.

[@luluiotrokag3858]

@@waltercomunello121 forget about the guarantee, I never buy a power supply i take what i found! now it's a good idea to choose a power supply close your need if you want 12.6V a 12V will make the job without modifications (just check the value of the caps if you want your power supply to last longer take a 50%over, the cheap products use 25% 15V for 12V , 50% will be 18V IF THE SIZE OF THE BOX AUTHORIZE IT )but you can use tantalium of recuperation . if you go too far from the original design you may taste some instability (the datasheet explain it very well ) Products who are very cheap produce in mass productions are most of the time well designed

[@paradoxical7902]

How many ampire current will supply?

[@babukartik6124]

Good. Whether the amp will be same or increase/decrease?

[@cameranmanner4701]

I'm guessing the output power will not change. So as the voltage increases the current decreases relative to the voltage change.

[@footloose6382]

Problem: You now have basically insulated secondary wires (the red ones) in contact with parts on the live side of PCB! I would not do this modification..

[@RupeshKumar-si7il]

Aap ye cp+power supply hai esme lg skata hai

[@aaronpoteet8407]

This is really cool But... #1... When Trying to hear what he was saying (ear to phone) and then all of a sudden blasted with music repeatedly. #2 Everyone has different accents. So when making an Instructional video the person talking needs to slow down and speak clearly so that everyone can understand.

[@mariote1359]

Buena modificación, y cuanto disminuyó el amperaje al elevar el voltaje?

[@reyleon61]

Es variable. La fuente originalmente 24w o sea que si la llevas a 24volts vas a tener 24w /24volts = 1 Amper.

[@osmanvolkaner9822]

I think your slm videos are educational. Thank you. I have a question. I don't want to spend on my cordless drill and buy a new adapter or tarsformer. It's expensive. Can I convert my 12V, 2A adapter to 14.6V and 20A, I need your information, thanks

[@TechIdeasAG]

Not at all

[@veko5]

Buen video 👍 pero el enlace Dropbox no funciona me parece. Que agregaste un resistor en paralelo al resistor a tierra

[@taikong7952]

Thank you, very useful, nice and clear presentation

[@anhang4704]

4:54, is the 220R resistor parallel with the 2.2k resistor?

[@BomJimmy]

It is 3.3K connected in parallel of 2.2K, what is difficult to understand?

[@veko5]

Hola a mi me pareció un resistor de 2.2k

[@veko5]

Creo que es mejor soldar un resistor de 1k

[@aydindemirelli481]

It's a nice video, how many amps is this device?

[@TechIdeasAG]

2Amp

[@aydindemirelli481]

@@TechIdeasAG Thanks

[@waltercomunello121]

we shouldn't talk about amps, but rather power. the device is rated for 12V@2.0mA (as it is written? I suppose it's 2A) so that would make it a 24W adapter. cranking the voltage up to 24V would make it output at most 1A, and any bigger current demand could damage it. so it would trying to squeeze 8A on a 3V device (24/3=8) because the very components or the traces could overheat or fail.

[@talon04091]

@@waltercomunello121 so is it 2ma or 2 a I'm confused and why would you guess after the uploader answered the question

[@waltercomunello121]

@@talon04091 it's unclear since the label on the adapter says "2mA", but it would be too low for any significant application. So 2A would be a better guess. I think the manufacturer has foggy ideas about current. The only way to be sure would be an ammeter in series with a 12V device which takes 2A.

[@reginaldlake9882]

Uncle salty dimmer switch?!!! I like your video on how u removed that parts n my wife think it's kool

[@yasinravi7443]

Good & important information Thanks Music in video is more louder than your voice ,difficult to understand what are saying

[@misha_mikheev]

4:50 which resistor and where soldered?

[@jp4x4n72]

So why did adding another resistor in parallel increase the potential voltage output? Thanks!

[@yron100]

12 v 2mA?

[@coolblack1903]

I don't fully understand what you're saying. 04:51 what is the resistor value here? In the video, the colors appear orange-orange-brown and gold. Can someone who understands write the resistor value or the colors...

[@robert8]

Sorry, but this will work only with that particular adaptor that you are testing on.

[@janospal5197]

This is the most important comment! Usually you can modify the output voltage with this solution +/- 20% only!!!

[@pratikpatil8010]

Bro display price kitna ka ha

[@aishababban]

love your tut.... from Pakistan

[@vinayakbhamare4490]

Can we get such type of digital charger. Please tell. Also mention rate too.

[@naveenkamalappanavar7558]

What is Ampere of adopter

[@hadzrinekosni4530]

Clear and compact..👍 eazy to understand. Tq for the good job, sir. But you got one punny problem.. by not mention about the ampier. Current will drop when volt rise. It will be better if you give the pro and cons

[@WilliamAshleyOnline]

this really depends on the capacitor used and its discharge rate.

[@sumanhazari3000]

Sir can u explain..how to know which components we should change? means why u put cap 20v 470uf, why not others?

[@RinksRides]

If you exceed voltage on a capacitor, it will die, sometimes explode. You should always try to use components rated more than your design for a safety factor.

[@assanmaideen]

new subscriber to u r channel keep rocking

[@janoshaasz5219]

SELV or PELV standards... - "who care" ??? Double insulation... - "who care" ??? It's dangerous "for anybody"...

[@brianfraneysr.5326]

Nice but what does the output waveform look like? And with 2 ma you are really only getting a signal level voltage. The pickups on my guitar make more amperage than that. But it is a good teaching project.

[@AgentOffice]

It's really 2a

[@BomJimmy]

@4:44 or replace with 1.4K resistor.

[@faisal5370526]

Good information video Dear Bro nice sharing 👍👍👍👍❤❤👉👇♥🙏👌

[@kalumota]

Cade a lista de materiais pra fazer a mudanca???????????????????????????????????????????

[@mycroftselene3326]

Ok that's cool eh but which one are you using to make the adapter?

[@andhyfirdant7033]

Apakah ini aman buat cas aki 12 volt kalau di seting ke 14 volt

[@user-so3uk9os4k]

looks like this phone charger can now charge my 19Vdc laptop. Bro! is there anyway to boost the 5V input to 19V output?

[@АлександрИванов-и9х6ъ]

Любуюсь грамотной пайкой!

[@BlueScreendo]

hello, could you please tell me the value of your potentiometer in the video?

[@kevinpors2971]

It looks like its 10KΩ from the schematic somewhere in the video.

[@james10739]

I like the package I have use like 32v printer power supplies and glued a buck converter on top for the same thing just more power

[@JPAG0806]

👍👍but: How to open such a sealed housing without damaging......

[@VK-qf4qi]

If it works probably is ok, if you can smell smoke something went wrong 🤣

[@NeoGhk]

please name all the components you used with their specs.

[@cfstv1889]

nice brother.. salute to you

[@nagularajinikanth7501]

Is it working...?

[@fransmurati2370]

So how much does the smps drop?

[@gayanindika2526]

Very nice 👍👍👍

[@conv2381]

Please explain why do you connect at that place to get up to 25 volt? Explain by a circuit, where to connect Pot, and resistor.

[@Mission-Omega.]

plz tell me the name of that sound effect.

[@machine1293]

Can we do than ,,out put" is 100 w or 1kv and thank you.. !

[@dattatraymadrasi4183]

Is it suitable for 12v auto battery charging

[@ranpatoamami7048]

Of course not, the power rating is way too small

[@danisulat6762]

Can you list all required items here?

[@leopoldofernandezjr.508]

It is good idea but cant work to other 12v up bec the amperes is very low. I hope u can teach us how to increase amperes up to 20amp.thanks

[@goheljayesh8903]

Best video bhai 👍🙏🙏

[@Dartanias11]

es de 2 amperios ???

[@lololp6702]

It's going to overheat the adapter and set fire on house.

[@waltercomunello121]

very nice soldering skills, but this only works with TL431 based devices. so it's not "any adapter", just "any TL431-based adapter". any more complex adapters which use ICs like the XL6009 (as an example) would need other modifications, if available. aside from that, this voids the warranty and gives no certainty that such a mod would make any device work.

[@reyleon61]

Those that are thrown away are used - What guarantee?

[@tkordus]

It will not work in devices where main IC is powered from transformer

[@gangadharathavale1577]

तीन तीन होल्टे 230 व्होल्ट एसी आणि डीसी विदाऊट ट्रांसफार्मर कसे बनवायच

[@sanatanprabhatminj17]

Very nice idea.very useful for me .

[@electropanel1211]

What is the value of potentiometer?

[@lebronmalakas8685]

I try 100k multiturn trimmer for slowly moving of voltage

[@eletroprojetoseinvencoes7031]

Muito bom amigo top..

[@subuddhaghosh3602]

Superb bro.. 👍

[@SolderAngek]

Great video 👍

[@anwarparves]

অনেক ভালো হয়েছে

[@qadeer1685]

Very good job

[@TechIdeasAG]

Thank you

[@marekyzr568]

Can you convert Xbox power supply 12v, 16A to adjustable power supply.

[@INDIANELECTRICIAN106]

Brother super 3 v to 24v Adapter and compont chang super super

[@khatibashraf4246]

Dear sir lithium battery charger banaye jiska 12.6 ho

[@sik2pik472]

Super Bro👌👌👌👍👍

[@electroagrist1112]

Super. But use low ESR cpacacitors

[@rc6696]

Very good. Já fiz um projeto modificando estes resistores de referência pro circuito de monitoramento que vai até o fotoacoplador, faço isso com quase todas as fontes de que tenho disponível 👏👍👍

[@luizfernandolessa1889]

Irmão, boa noite. Vejo que você já fez alguns circuitos e deu certo. Pergunto: se eu quiser pôr a voltagem mínima em 1,5v quais os componentes que tenho que trocar? pois não conheço os cálculos que preciso fazer. Obrigado e forte abraço do Brasil.

[@GiC7]

Love your teachings

[@TravelingErol]

It would be better if you could explain more clearly

[@rajannagn7034]

What about current rating.?

[@LheodaDjTechTv]

Nice sharing good idea support from lheoda tech tv

[@marwakhalil6215]

okay its good but tell me how i convert this adopter into 48v please send me the diagram

[@essamfayez1566]

القطع او المكونات المستخدمة المقاومات الثابتة المتغيرة قيميها اية

[@Deep_X_robi]

Not make large changes it may failed The limits variable voltage is should be 9v to 14.4 is enough!! 😏 😉

[@ducdungnguyen4128]

I think so too, if the fb voltage too low, the vcc for controller is not enough

[@manumore9571]

What about ampere controll....