A Simple Trick to Get Variable Voltage from Any Fixed Output Power Supply!

I try to modify a PSU of 12V 12,5A that actually deliver 13,7V in this way to obtain approximately 16V so I can charge with it a 12V 92A AGM battery.
On my PSU it have on the PCB 2 resistors of 2,2K.
I used a 220R resistor and a B5K but it's ticking, hardly starts for 2-3 seconds and stops, delivering a maximum of 9V...
Any advice, what values to use for the desired 16V as output?

Give me diagram please

Se este ajuste de corrente poderia se de 0 a 1,2 Amperes, neste caso só consigo se no LM317 estiver na saída do do potenciômetro '0 volts' estiver um lm 317 ltz com 100R como constante, ligado

I did same but not getting exactly, perfect from 9-24 v, but fluctuating below 9 v. Any help ?. Thanks in advance.

Judul laguy apa y mb bagus bener sampe menyentuh hatiku mengingat seseorang

My power supply is 12V 5A 60W. Can I also do this method ?

I hate altume disigner or what ever it's name. I hate that ad

Where to buy& the cost.
Available on line.

If you reduce the voltage, can the internals handle any corresponding increase in current?
Similar questions exist if you increase the voltage (beyond the previously fixed voltage) will the components get fried?
My serious advise if you want a variable voltage supply BUY ONE, unless you happen to be a very highly skilled/competent in power circuitry and know exactly what you are doing.! I really admire people who play with electronics but there are are always dangers - fires explosions and electrocution which can be fatal! The rusts massively increase with decreasing skill level.

Very excellent, and these are suitable for supplying and reducing the intensity of lighting for LED lamps

Eu vou fazer algo similar a que você está fazendo no vídeo. A diferença de meu projeto é que eu estou usando um alimentador de computador.

Muito bom!!!

Thanks, excellent technology. regards. Engr. Zafar Saleem

👍👍👍

SIMPLE????

Day la chia khoa cong nghe dien tu cao cac nuoc hay chia se cach lam cach bi kip san xuat de the gioi phat trien suat sac hon nua ok

Why can't they make a Vom with a buck/boost and an internal battery system to allow to measure and use

Abi dc motorun gücü nedir nereden bulabilirim

Where shall I get this voltage stabilizer

Please nevers show a vidéo with a bad exemple like that : When you use an équipement class 1 you have always to connect an earth wire !!!!!!

И сколько ампер на выходе при 13.8 в. ?

And akiut the voltage of rhe capacitor?

Orang indo ya

Why is the potentiometer reversed?

I am having trouble understanding this bloke. Anyone else?

И какой же ток на выходе после переделки?

Can make it output 1.5v ?

Der China Kram sieht wie Enterprise aus . Es ist aber auch nur sehr Einfaches drin.

Oder man nimmt gleich einen Dimmer als simpelste Platine und setzt paar passende Leistungs- Triacs dazu ohne alles zerlegen zu müssen, plus 4 Brücken Gleichspannungswandler bis z.B. 600 V, den passenden Elko über 220 V. Plus 4x60 V , intelligente Z-DIodenschaltung mit IGBT statt der Schwebenden LED Birnen mit noch schnellerem Kurzschluß. Die herunter geregelte Spannung kann man nochmals per LM und dahintergesetzten Sperrschicht - Mosfet feinregeln.

Beim Laptop muß der Trafos schon noch zusätzliche Anforderungen erfüllen.
Bei Akkus auch noch eine geeignete Ladeautomatik

Deshalb die SMPS - Trafos und auch zusätzliche Sicherheitsregelschaltung bei Computernetzteilen ,die dort nicht zum Spaß da sind.

I want your voltage meter ....

회로를 봐야지 ! 짱구야 !
0-3k간 위험한 구간이 있을수도 있지 ! '0' 근처서 . .

it is better to change output capacitor to higher voltage

have to check output capacitor voltage!!
usually only 16V on 12V supply, so change to 35V for reliable 16V output...poor quality capacitors may go "poof" if used at maximum voltage for any longer time!

elinize sağık

Nice Idea. Will make one ....

E o capacitor suporta?

👌👌👍👍

I have already one 12v 10 amps powersupply of this type, I like to convert this variable powersupply like you, what will be the resistance value of those 2 resistor, pl. Confirm

Kıymetli hocam, elinize emeğinize sağlık, internette angstrom gümüş suyu üretim cihazı yapımı ararken size denk geldim. Bu cihaz içinde bir el atsanız yapabilirmiyiz

Pode colocar um tl431 de referencia 1.5 volts.

Grato!

зафир - молодец !!! , хорошая доработка блока,
респект

Bravo

Zafer usta süresi ayarlanabilen fasılalı silecek devresi yapabilir misin? en az komponentle nasıl yapılabilir?

SUPER

The little TL431 circuit parts are very good to use in so many ways. I've been using them for decades now...

هل م̷ـــِْن الممكن جعل الباورسبلاي شاحنة بطاريات؟ م̷ـــِْن المعلوم الباورسبلاي أإأذأإأ شحنت به بطاريات يحترق

very good 👍🏼

👍

Usefull info technically, thanks full.... 🎉🎉🎉🎉