ATX conversion to bench power supply (fixed & variable)

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Hello friends!
In this episode I will show you how I converted an old ATX PSU into a bench power supply with fixed and variable outputs.
Some of you asked me for this video, but I also wanted to make it for a long time.
Now I have a more colorful power supply that will replace my 2 old ones.
A big THANK YOU to all my patrons, especially to: Max Rice, techge and Anthony Ortenzi.
If you are a nice lad and want to donate to me on Paypal, here you go: melcumlk@gmail.com
My Patreon campaign: / sorindiy
My Facebook page: / sorindiy
My Instagram: / sorin.diy
Schematic (volt/ammeter + converter): i.imgur.com/iELrqwg.jpg
Potentiometers schematic: i.imgur.com/fu69FpN.jpg
Components:
80W buck/boost converter: s.click.aliexpress.com/e/_Dey...
Volt/ammeter 4 digit: s.click.aliexpress.com/e/_DFO...
Potentiometers 1K+100K: s.click.aliexpress.com/e/_DBr...
Potentiometer knobs 6.35mm: s.click.aliexpress.com/e/_DBV...
Binding posts: s.click.aliexpress.com/e/_DFU...
10W 47R resistor: s.click.aliexpress.com/e/_DDn...
USB port: s.click.aliexpress.com/e/_DEV...
If you enjoy my videos, hit the Subscribe button!

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Опубликовано:

19 май 2023

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Комментарии : 432

@uzer_zero 4 месяца назад

Humorous, clear, straight-to-the-point with some very nice ideas here. Thanks for posting this. I have all the parts to make one of these but keep putting it off. This video may inspire me to get back to work on it. Great work!

@stephendudley4377 10 месяцев назад

Just found your channel and just want to say I love your style, honesty and self depreciation is an extremely rare thing on YT, and everywhere else nowadays come to mention it. The added humor is a bonus that has now made me a fan and subscriber. Please keep doing what you do and thank you for your excellent content

@fatoniwahyuutama6591 9 месяцев назад

Ah... Fellow subscriber, then; despite this is the very first his video that I seen, I love his style etc and then, subscribed 🙂

@thomashverring9484 10 месяцев назад

I only came here for a how-to on a power supply from a PSU, but I stayed because of your humour and your cat! And it's a great video and how-to :^)

@GhostRider7Seven 11 месяцев назад

"Words cannot capture the awe-inspiring beauty of the video showcasing the ingenious creation of a 12V energy source using nothing but scrap metal. I am incredibly grateful for the opportunity to witness such creativity and resourcefulness in action. This video not only highlights the power of human ingenuity but also serves as a reminder that beauty can be found in the most unexpected places. Thank you to the creators for sharing this remarkable project, as it truly showcases the limitless possibilities that lie within our grasp when we dare to think outside the box."

@omniwatcher 3 месяца назад

Thank you very much, this video is very informative and straightforward without any unnecessary information. I like the idea that you use the ATX's normal outputs as well. The way you do the layout is also very practical for me.

@bigZCNC 4 месяца назад

Thank you for taking the time to do this. Just made my own. Now be able to use it to power my other DIY projects (RSU, magnetic stirrer, photoetch shaker etc, etc).

@user-pp2hn5nv6o 6 месяцев назад

A professional giving a professional project presentation. Thank you, Sir, for giving perfectly precise information.

@lloydsshednanigans 11 месяцев назад

I am a bit of an electronics-project fan too and I appreciate your video. Too-many times, instructional videos turn into unnecessarily over-complicated and "waffly" rubbish. You have shown EXACTLY what is needed and WHY in one simple video. Well-done. The cameo-appearances by 'El Gato' are an excellent segue into the next scene. The wry humour is also appreciated. Thanks for a great video.

@Rocky3ooo 11 месяцев назад

Very informative and even more entertaining, thank you and your lovely assistant for producing this video. 😻

@3v068 9 месяцев назад

Sorin, I want to thank you for this. I have a car subwoofer with a class D car audio amplifier to power it. I have been trying to get a reasonable power supply for some time for it, but lately, I cant get anything that is either outrageously expensive, or outrageously underpowered. PC power supplies are able to provide the wattage, but its difficult to provide all that amperage through those wires, this actually gives me a solution to my amperage problems with the amplifier. The power supply cuts off when normally plugged in because it cant provide the massive amount of wattage but with all of the wires together in one place, it allows me to have FAR MORE amperage to the amplifier, therefore allowing me to drive it harder. This is important because I DJ and I need really loud speakers in certain situations. This is awesome!

@christaylor9112 9 месяцев назад

You have prompted me to look into doing something similar with one of my old PC power supplies, good work. Love your feline helper too, every electronics channel should have one.

@GuianLorenzo Год назад

I also have used the same volt amp meter for my small diy project and yes it adds an unwanted voltage drop even at 1 amps but I still used it because my build has an average current draw of 150mA - 300mA. Also your cat is a really good assistant

@SuperFredAZ 11 месяцев назад

maybe you could do a conversion using a 19 V laptop supply, put it in a wooden box add the volt/ammeter binding posts. With a 90+ Watt power supply you can still get quite useful current, and of course this is 100% safe!

@fernsgilbert 11 месяцев назад

I built exactly a same bench power supply. But I also added a relay and switch before the variable power output so its easier to set the required voltage before hand and then switch On the load.

@stephendudley4377 10 месяцев назад

I used to install signs and used that self adhesive vinyl fairly often, for future reference if you make up a spray bottle with water and add literally one tiny drop of dawn dishwashing soap (no more than the smallest drop!) you can spray the solution liberally to the back of the vinyl and the surface it is to be adhered to giving you the ability to move it around and get it exactly where you want it, then you squeegee any air or water bubbles out and it sticks very well, won't work on a porous surface like that wood unless it's sanded and sealed though. Hope it helps in any future projects

@thomashverring9484 10 месяцев назад

Excellent tip!

@markf1441 Год назад

Connect the fan between +12 and +5 V . Check and choose polarity 7V cc . I like your assistant !

@_funkytorino_ Год назад

Very clever!

@JimboDude66 9 месяцев назад

Very nice work! I can't wait to start my own power supply (requesting the parts now...). And I love your cat ;-) And I really love that you use the 'old' power supply case, so we don't have to make a new one 👍👍

@ShajiswamyNarayanan 2 дня назад

Nice pwersupplay, beautiful presentation. GREAT.

@nalgene247 3 месяца назад

Nice video! It's always nice to watch someone who knows what they are doing. Since I am not one of them, I am now convinced to just buy a power supply instead.

@colefoster9280 Год назад

One of the nicest looking computer power supply conversions I've seen, good job.

@SteveH-TN Год назад

Thanks for sharing this video and information. I appreciate your thoughts and advice.

@ronyd...1310 11 месяцев назад

Es excelente este video y mas aun porque se ve la evolución de tus trabajos...este tema las fuentes de laboratorio caseras son FUNDAMENTALES...ojala sigas creando mas modelos... saludos desde Argentina Bs As

@MuhammadShafiq-fh8dp Год назад

You have not used -12 volt in series with +12 volt because -12 volts has only 0.5 amp. If you use it in series you get 24 volts but 0.5 amp only as output.

@Sorin_DIY Год назад

Correct.

@roeb13 Год назад

No.. I make 24v from -12v, test curent load and I got 8a drop to 22v in full load amplifier tpa3116..

@ankanpradhan9724 8 месяцев назад

In his test with that car light bulb it is proved that it can exceed well over 3amps, probably more.......

@Alypsat_kz 2 месяца назад

If you connect two such power supplies in series, you can raise the voltage to 48 volts using -12 volts from one of the power supplies.

@martyb3783 11 месяцев назад

Well done. I think I will make one for myself. Thanks for making this video!

@balamageshkumar3048 Год назад

Real DIY King! Amazing videos sir!

@teomanc.9284 Год назад

The simplicity of the narration and the presentation make this familiar subject enjoyable. I think it's worth the holy bible for novices like me. Thank you Sorin.

@rynosity68 8 месяцев назад

Nice video Sorin - clear instructions and explanations. Funny too - your cat wants to help.

@donaldfilbert4832 8 месяцев назад

Very nice !! Pro looking !! Love the cabinet work too !!

@bernardlemay8563 7 месяцев назад

I enjoyed, so I subscribed. Can't wait to start binge watching your content.

@apostolosp4774 Год назад

very nice work man , thanks for sharing !

@scotnorth 10 месяцев назад

Nice bit of work And looks great.

@jamiew.lacroix7055 4 месяца назад

My cat looks exactly as your does, she a real character. Awesome video thanks for the hard work.

@ankanpradhan9724 Год назад

Good work as always, respect from India 👌☺️

@andresgarciaalves Год назад

Awesome project 👏🏻👏🏻👏🏻

@guatel-atassistenciatecnic5375 7 месяцев назад

Great project! Congratulations!

@Jameel_Ali Год назад

Sorin loves his ATX PSU to Bench PSU conversions lol

@moriartymw Месяц назад

Excellent video - entertaining and easy to follow. I have a newer 700W power supply from a tower PC I no longer use. It comes with a slew of wire connectors so I am hoping to make a companion pox that will interface with it somehow instead of modifying it like you have done.

@Popeyes66 Год назад

Your cat and yourself are funny Sorin. Nice job.

@allyg2510 4 месяца назад

Thank you for the very good instructional video with no faffing about and I loved your cat helping you !!

@bwselectronic Год назад

Nice looking build. Hope it got your supervisors approval😎

@SeeFreeTV 10 месяцев назад

You mean the cat?

@bwselectronic 10 месяцев назад

@@SeeFreeTV of course😎

@gheorghitaboboc1502 Год назад

Nice power supply conversion!

@shridharkulkarni7489 11 месяцев назад

Nicely explained in details, seems to be accurate, for electronic experiments, thanks

@MrClean-ep7uc 10 месяцев назад

Great video, I've been watching this a few times because I have an old computer with an ATX power supply, and this video was a great reference. I'm almost done now, I just wanted to add a warning to anybody out there that the heat sinks on these models may not be grounded and while it didn't kill me, was a big surprise

@wwaldes 2 месяца назад

nie byłeś wystarczająco wilgotny

@tolkienfan1972 3 месяца назад

I love this idea. I have an unused pc power supply... I might attempt a similar mod. Very cool. Also, love the shots of your cat!

@stevenA44 Год назад

As always, I love your cat. :) I've seen your other power supply conversions and I want to make one, but I have a decent sized bench-top power supply already, plus two smaller ones. I love building stuff though. I might make this one just to be doing it.

@ansonvattakunnel5297 Год назад

Great video as always, keep it up

@injoelsgarage3934 Год назад

Nicely done!

@magnum164 8 месяцев назад

I am actually doing the same thing, had it on my bench for a while waiting for a case design I like. In addition to 12V,3V and 5V I also need adjustable as well. But I am using a 1500W DC-DC booster 10V-60V IN and 12-90V out and 30AMP Max. SInce I need from time to time 48V, 60V to test electric mower boards. I have a 1500W 12V PSU that has a rail leaking so it no longer works on PC.

@bobelism Год назад

Ai urcat in topul RU-vidrilor mei preferati :D Keep up the good work!

@gabrielalejandronatalini1913 11 месяцев назад

Very good power supply. Beautiful cat.😊

@Ucfhm Год назад

Finally a video!!! welcome back.

@chaswinder 3 месяца назад

Great video. I love your humour, and of course your cat!

@MiguelDeMarchena Год назад

Thanks for the video Mr. Sorin

@Maurice-pz5sh 8 месяцев назад

I too enjoyed both the technical aspect and the humerus one. El gato will steel the whole show he is quite the actor!😃

@mishah6623 11 месяцев назад

Sempre bravo ed esauriente.👍👍

@johnhricko8212 5 месяцев назад

Thank you for including your mischievous assistant ! !

@rustamakhmullaev5697 Год назад

Very good job, bro👍

@Tefelucky 11 месяцев назад

hi Sorin what a simple and compact video.....! Add the connection diagram too Thank you

@pcantele Год назад

Great project! Enjoyed the cat!

@mariomionskowski6223 11 месяцев назад

Realy funny and nice design. i like your soldering iron.

@user-cs5dq8tb8m 3 месяца назад

Thank you so much sir, it was beyond helpful. And also lovely cat.

@ChrysalideEngineering 9 месяцев назад

Indeed computer PSU are very handy, i keep couple of them for the purpose of auxiliary supply Regards Jean-François

@electronic7979 Год назад

Nice project

@TheJobieadobe Месяц назад

That was super entertaining to watch! I love the cat helping as well lol 🤣

@jumbo999614 7 месяцев назад

That's beautiful power supply.

@elikamil7651 11 месяцев назад

thank you very much for good guidance sir..

@kithmalkalhara4329 Год назад

nice work ! thank you ❤

@jeffjordan3806 9 месяцев назад

Great job ! And, I LOVE the cat.

@seeker70 Год назад

Due to short circuit protection -12 vots handels only 0.5 amp current if you exceed this current SMPS will turn off. For this you can bypass the protection circuit and use its full power even in +12 -12 rail.

@damyanstoyanov1830 8 месяцев назад

How would one find the circuit in order to bypass it?

@seeker70 8 месяцев назад

@@damyanstoyanov1830 wires going to voltage to regulator IC or main IC by resistor.

@seeker70 8 месяцев назад

It depends bro every circuit is different try finding video on RU-vid for your model or same looking pcb board

@wanderingmoon9772 7 месяцев назад

I LOVE that you included your cat in this. 😁😍🤣🤣

@aahnacer1897 3 месяца назад

Awsome. Very interesting video. Thanks. Bro.

@inhaitran1203 9 месяцев назад

THANK FOR THIS VIDEO, GOOD JOB. VERY USEFULL, VERY NICE

@ServiceOrchestramegastore Месяц назад

thank you, education and fun.. love that cute cat 🥰

@mixme8655 6 месяцев назад

New subscriber always watching your videos ❤❤❤thanks i like it most😊

@housewirestv 7 месяцев назад

great video. I needed only 12V so I left only that output

@ahmednasr7227 Месяц назад

Very good idea thanks bro good work

@RaghavanRaghunathan 9 месяцев назад

Good video and nice cat. Thanks for sharing.

@alex-fara-coruptie 8 месяцев назад

Bravo Sorin frumos proiect, tare amuzanta si zapacita e pisica ta 😅

@ManoharSingh-lq8po 8 месяцев назад

DONE GREAT JOB.& NICE EXPLANATION.

@Alypsat_kz 2 месяца назад

If you connect two such power supplies in series, you can raise the voltage to 48 volts using -12 volts from one of the power supplies.

@LheodaTechTv 11 месяцев назад

nice sharing

@discoverwithtwins3175 7 месяцев назад

Great Man, Subscribed your Channel

@fardinahsanemon7946 Год назад

Watching your video from Bangladesh. Actually i watch your all video

@ivandzeletovic6485 5 дней назад

The video is great. Nicely explained and with a touch of humor. Even we amateurs can learn something. I have one question, so I would like an explanation. Why are you using a 10W and 47R resistor (for voltage stabilization)?

@Sorin_DIY День назад

Hi. The power supply needs to detect a load always connected, otherwise the outputs will not be stable, or it may turn off. the ceramic resistor + volt/ammeter display + the fan will create a load always connected.

@damianfreeman5069 6 дней назад

awesome video . I don't fully understand everything but hope fully we can ask for some tips

@JKnight89 Год назад

Cat: Oh SORIN! Guess what time it is! Time for me to get in the way! lol

@DAROS21Q 8 месяцев назад

muy buen video cada quien tiene sus gustos personales y esta fuente de laboratorio casera se lleva los laureles.-

@fernando_gotze 9 месяцев назад

Nice video!

@sukhsa9460 8 месяцев назад

Hello Hi Bro I like all your videos very much and recently. I am a subscriber on your RU-vid, I like all your videos and they are also useful.

@ankanpradhan9724 Год назад

People:- The high voltage stored by the power supply capacitor can shock you 💀 Electroboom:- I know what can shock you better 🍷😎💀

@quantumleap359 11 месяцев назад

Nice job

@tayro7265 6 месяцев назад

You should look up the datasheet for the voltage regulator Ic's built in the Cpu Psu. Many have a max output of 30-40 volts. Make sure downstream caps can handle the max volts plus 10%. The datasheet will tell you what pins on the Ic connect to volt sense resistors. Remove the resistors and connect wires for multi turn pots. The datasheet will also give a voltage output range and corresponding resistor values. If say the 12v regulator can operate up to 40v's and it takes a 10ohm resistor to do so or a 20ohm resistor to reach 24v's then a 30ohm pot should reach around 36v's. Do this for all of the outputs. The neg 12v is now -36v and the pos 12v is +36v giving you a 0-72vdc total output. All for the cost of a few pots, wire and possibly some caps. Why add a voltage regulator to a voltage regulator?

@TheBlackManitu 3 месяца назад

That's a very interesting information. What could be done to also adjust the amperage?

@tayro7265 3 месяца назад

@@TheBlackManitu If your trying to get more amps out than the PSU would normally provide, look into current sourcing. The 2N3055 in a To-3 pack could be helpful. If you just want to vary what is being provided look into current regulating transistors. Like the LM317. Tons of at hand info. Different current loads, adjust ability, temp displacement, max min volts etc.

@brianbloom1799 7 месяцев назад

Your cat is cute, Me and my wife have a 30 pound monster Tabby, She runs the House, Great power supply Build.

@CryptoRider45 6 месяцев назад

Great tutorial... I love the cat🐱

@OshanRube 11 месяцев назад

Thanks its very cool

@fredfarnackle5455 7 месяцев назад

Nice job.

@simonilett998 6 месяцев назад

Very nice job. I think the cat is bored and is trying to tell you he's looking for a project to help with. I modified one a few years ago and included a variable CC/CV buck/boost module with digital screen and separate +/- terminal posts for adjustable output. I also have 4 separate voltage + output terminals and 1 common - terminal, all are constantly live, but I added a rotary switch to switch the boost/buck converter on/off, and the rotary switch also connects to a mini volt meter display so I can view each output terminal voltage separately, or to turn the volt meter off. I was able to keep the case, fan, input power socket, main switch as original, and I mounted all the terminals, boost/buck, volt meter, usb socket and sb/on led's and sb switch on the top panel. It took a fair bit of careful planning (ocd) but it all came out very nicely👍

@wwaldes 2 месяца назад

zrób chociaż zdjęcia i wstaw na youtube

@simonilett998 2 месяца назад

@@wwaldes Ok, I will take a short video and I will upload it to RU-vid. I will notify you the video link tomorrow after I upload it.👍

@wwaldes 2 месяца назад

@@simonilett998 wow, dziękuję!!! nie spodziewałem się odpowiedzi. dzięki jeszcze raz. pozdrawiam z Polski.

@simonilett998 2 месяца назад

@@wwaldes No problem, I always try to reply to comments. I don't speak Polish, so I have to use a translator. Here's a link below to my ATX power supply video as promised. The video is in English, so you can try turning on subtitles, or use a translator, or you may already understand English. Hope you like how mine turned out. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-CN5pFx_Iol8.htmlsi=aIU8FtwMHiwLj-Mg

@wwaldes 2 месяца назад

@@simonilett998 Dziękuję, oczywiście znam sposób tłumaczenia, i wiem że nie mówisz po polsku zasiadam do oglądania. Mam kilka zasilaczy opartych o ridena, np. 6018, 6006, 6012. i inne. Długo zajmuję się elektroniką, ale zawsze wspaniałą przygodą jest dla mnie spojrzenie kogoś z innej części świata na różne tematy elektroniczne. Dziękuje jeszcze raz. Pozdrawiam🖐

@cemonsoy8507 6 месяцев назад

thanks good job

@MalaIsGone Год назад

AHHH THE MAN IS BACK AGAIN 👏👏👏

@soaroneagleswings7 10 месяцев назад

Excellent presentation! I do have a question...what are the maximum number of amps it can produce and is there anyway to wire it so it would produce the full 19 amps? Thank you!

@Sorin_DIY 10 месяцев назад

Hi. Each output of a PC power supply (3.3V, 5V, 12V) has a specified maximum current. if you connect the internal wires directly to the binding posts, each output will deliver its maximum current (if the power supply doesn't have any problems). but if you redirect an output, let's say the 12V output, through a DC converter to adjust the voltage and current, then the maximum current will depend on the type of the converter, the adjusted voltage and the efficiency.

@teomanc.9284 7 месяцев назад

Dear Sorin, could you give us any advice for protecting a power supply from inductive loads? Do you have any ideas/advices for this? I don't want to burn my power supply with trying BLDC motors or etc.? Thanks.