ATX Bench Power Supply - Convert a Computer Power Supply
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- Опубликовано: 13 июн 2024
- A computer ATX power supply can be easily converted into a versatile and powerful power supply for your workbench. In this video, I’ll show you how easy it is to make that conversion.
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A power supply is an essential piece of equipment for any electronics experimenter. While you can get by with USB adapters and “wall warts” having a capable high-current source of 3.3, 5, and 12 volt DC power will take your experimenting to another level.
Commercial power supplies with these sorts of current capabilities can be very expensive, however, there is a much cheaper alternative. With some simple wiring, you can convert an ATX power supply from a desktop computer into a reliable and capable workbench power supply.
Even if you need to purchase a new ATX power supply this method is still a lot cheaper than buying a commercial workbench power supply. And chances are that you won't need to spend any money at all on the ATX power supply, I salvaged mine from an old Windows XP computer and it works just great.
There are two types of ATX power supplies commonly in use, I will show you the differences between them. Either model can be used in this project.
Here is the Table of Contents for the video:
00:00 - Introduction
04:36 - Parts used in Project
10:06 - ATX Supply pinouts
13:46 - ATX Supply Inside
16:17 - Testing ATX Supply
19:14 - Hookup Diagram
22:48 - Building the Power Supply
30:17 - Testing the Power Supply
31:59 - Adding a Power Meter
One note - there are many ways to do this and I outline a few of them in the video. Several methods (including the one I used) involve opening up the ATX power supply. If you do that BE VERY CAREFUL as some of the components in the supply can retain a high-voltage charge for hours or even days after the supply has been unplugged.
If you are unsure about opening up a power supply (or if you have a new one still under warranty) don’t do it, you can still build this project another way. I go over that at the conclusion of the video.
As always there is an article on the DroneBot Workshop website that accompanies this video.
Hope you find this video useful and if you haven’t already please subscribe to the RUclips channel. Thanks! 
Хобби
Finally, finally, a video that actually teaches something, no noisy background music, no video only type instruction, no heavy accent, no fast talking and excellent camera angles, along with excellent diagrams and presentation. Yes, I wish I had you as my high school electronics teacher. Maybe I would of attended more classes and actually learned something. Keep up the great videos.
Lol, I wish I had a Electronics class in High School
Me during highschool: *evident stare that doesnt know what an electronics class is or if it even exists...
❤спасибо
I am 72 years of age, and I so wish you had been a teacher at my school way back in the 1960's. Every aspect of your youtube vid is 100% perfect, no music, clarity of annunciation is great, presentation cannot be faulted, even at my age I am still learning thanks to you.
Please dont' stop.
Thank you.
Spot quiz! Q. How many times did he say power supply?
Hello sir, I hope I will be like you at your age, respect. I wish you all healthly life
@@blissbouwerij4033 Who cares?. I don't!
Thanks. i got 12 years to catch up
72years and 72 likes. Perfectly balanced, as all things should be.
High Class of this kind of teaching videos. no silly music, good diction and brief explanation. Thank you
And No frantic editing, between every line of dialog
"Brief"
The music is always so distracting and loud
It's amazing how so many of us want these type of videos yet so few produce them even though we almost always voice our opinions on the unwanted music and editing of the majority of poor quality videos. Keep up what you are doing because you are one of the few that actually care what us the viewer actually want to see and learn from.
I award you 5 stars for your videos, clear voice, no stupid music, perfectly explained, wish I could give you 1000 likes, thank you.
Hi Bill,
You have one of the most listening-friendly, patient, relaxed and slow tutorial voices I've heard. I thoroughly enjoyed this tutorial and your easy-to-follow instructions. Well done and thanks.
It's so refreshing to see someone able to keep it simple while being specific and relevant, thank you.
I really like the clarity of your explanations and with no annoying music while you speak. I am also a late learner 76 years old. Slowly but surely.?
Wow! Am I lucky to have just found this channel. The standards of construction and presentation are stellar! The dialogue is clear and even though I have been into electronics for decades, I am still learning.
Brilliant! No wobble cam, no annoying music. Well scripted, well lit and well presented. Thank you! The ATX PSU that I "rescued" from a long since redundant PC now has a new purpose in life. Keep up the excellent work.
used ATX power supplies are also excellent for powering larger led strips and matrices.
You are a calm, decent and respectful man. The explanation is clear and most importantly there is no background music. Thank you very much. My only objection is to adding a resistor , as it constitutes an unnecessary load to the circuit, especially since it is connected in parallel.
I'm at 21:45 into this video and have to pause it to say I absolutely love the way your teach.
OUTSTANDING! I have been waiting for you to do this video.. I have watch others do this but most of them are fly by the seat of your pants young fellas.. I wanted to make one for my new hobby (at 66 I am teaching myself something new!!) I like to see others ideas but only follow those men I think know what they are doing. And you are one of those men.. I really thank you for all of your hard work in making these little videos (it really shows) thay have been an immense help to me.. as I am a little slower then I was when I was a younger man.. But I an not through yet... Carry on your teaching is very much appreciated..
I love it
I wanted. To lt long time ago
With limiter parts
Thanks giving me to do project
@tinkmarshino...
My story precisely! Cardiologist by day, projects on weekends at 66!!
Thank you for such well-done clear instructions for the project!
Tank you for this outstanding and excellent clear video, it was clearly explained,and i am planning on te build it
Thank you for such a simple explantion, informative video that anyone can easly follow. Great presentation.
I would have to say this is one of the best tutorial video’s I’ve seen on RUclips yet. Great video, easy to follow and very informational. Fantastic job.
I avoided this video initially due to the length of the video. Having wasted a lot of time elsewhere I came back to watch this one. I now feel comfortable, safe and confident to proceed with this project. Clear, concise and intelligible comments and well shot video with good circuit diagrams. Thank you.
Nicely done. One of the few technical programs that merits production credit. Outstanding audio and camera work.
Amazing. I was literally taking a break from building the same style PS. I was researching the different 5V lines. Thank you so much for your informative videos. Now I will add the volt/amp meter. I enjoy your videos so much.
Your way of explaining everything is second to no one's. I would love to have your calm demeanor. I've learned so much from you are a semi-newbie to electronics. Well done Bill!
Amazing video! Thank you so much. Looking at this power supply and thinking of how to turn it into a bench supply felt like a daunting process. Within 10 minutes of absorbing your knowledge, I feel confident. Very nicely thought out and explained.
Newbie here... First time on this channel and this is the first video ive watched. For a person (me) who just started this kind of hobby i didnt have any problems understanding what youve explained. From title of project... Parts needed... Illustrated diagram... And follow up on voltmeter... All was explained in layman's words. Even sounded like a person who has lots of patience. I very much appreciate this... Unlike others who presumes that al watching their vids are literate on electronics. Thanks.
Thank you so much for this informative video! I'm in need of a bench power supply, but am on (disability) a low budget. I do have a few desktop power supplies laying around so this will help me immensely.
This video is a very useful tutorial. I actually did this and converted an old computer power supply into a bench power supply in a single day at almost no cost from this video. Keep up the great work!
I think you are the teacher we all wish we had, I'd be an engineer if I saw this in the day. Thanks!
Fantastic presentation.....this is so user friendly especially for those that are relatively new to anything electronics.
I like the coloured voltage levels etc and the wire paths with the visual presentation of the inputs and where they go to......even my long deceased granny could follow this plan and she was into crystal sets in the 20's.
Very clear & simple wiring video with many cautions included. Gives very safety assurance in wiring-up step by step. TQ especially on the part on volt-amp meter wiring caution. Pl continue your generous effective teachings
Very useful, thanks Bill. A local computer repair shop here in Ontario gave me two older (but functional) ATX power supplies for free. I used these to make to PID controlled heating devices, one for heat bending guitar parts, and one for a 3d printer filament dryer. Of course, I used the guidance in this video for the builds.
Thank you. This noob to electronics is understanding many things I have been struggling with. I appreciate the way you are teaching.
This is absolutely the best electronic teacher and course, display I have ever seen. During this covid 19 crisis I seem to have time on my hands and this project really fits into my plans as I often need to check amp draw on automotive fans, pumps and stuff.
Thank you. I really appreciate the step-by-step, easy to understand, and well illustrated presentation of your videos. As a beginner in the world of electronics, It makes it incredibly easy to get started. I literally harvested an old power supply last week and was wondering how I could do this.. and like magic one of your videos popped up.
I agree with everything you said, and a semi-newbie I haven't found a more educational channel than this one, and his calmness actually soothes me.
Extremely clear, extremely clean... as usual !
Always a great pleasure to follow you.
Thanks a lot.
Please teach me the diagram of input voltage selector
This is one of the few reasons I am still coming to youtube. Thank you for sharing your time and knowledge.
You broke it down completely and made it look fun and easy. You are a great instructor.
Thank you !
Your videos are great, good quality and very well explained. Keep up the good work.
A wonderful video with clarity in your speech and technically superior!. March on Sir with your great service
This is a very informative video with clear explanations & visuals. I've been storing a few power supplies for longer than I would like to admit & its time to make one of them useful. Thanks for posting!
I think this must be one of the best teaching videos on the tube, I found the presentation clear concise and informative. Well done Sir !!!!
20:17 I don't think your wiring explanation could have been illustrated any clearer. That was great
I absolutely agree !
You, sir, are my new favorite channel!
Splendid presentation! Excellent illustrations, articulation, and explanations. Last night I took apart an old PC to destroy the HDUs. I saved the power supply with in mind to use it as a bench supply. Came here to find out how and hit gold.
Junked an old computer recently for the gold and was not only looking for ways to reuse the other bits, but have needed a bench-top 12v power supply for a long time. This is *exactly* the video I was looking for.
Thank you!
Greetings from Australia, thank you so much for the detailed project, a true gentleman and genius , well explained and excellent show , especially adding the current /voltage display unit, excellent and back - to - basics switching approach
, thanks for sharing , can’t wait to make this project, I’ve subscribed, and definitely 200% thumbs up, champion!
Hi, friend. Watch my video.
ruclips.net/video/RSJZJXzgZQo/видео.html
Some newer power supplies have several "rails" to separate the load. If you want to pass through a lot of current, you should probably consider which wires you use, and not just pick the ones on the motherboard plug. Also, if you don't want to open the power supply, there's no stopping you from simply leaving things unconnected. Some power supplies also have modular connectors, which makes it even easier to pick the ones you want. In any case, these things are so easy to find. Nice video, showing how easy it is to use.
Yep. I enjoyed it very much!
Never thought I'd watch an ATX bench power supply video from start to finish, while being fascinated. This was professional and good quality.
Bravo! You speak low and slow enough for me to follow you. You are, in essence, the Mr. Rogers of the electronics workshop. You make it easy for me to repair the Commodore Amiga's that pass to close my way by your creative prowess. :)
In the midst of building this with a 3D printed case, thank you very much for a comprehensive and detailed overview, so helpful and useful in planning our project !!
Don't forget to leave vents for the fans cooling air to escape or it will overheat.
@@Kimdino1 Yes lots of vents , printed a 3D case holder, all went well !
@@als1023 Sorry, I didn't look to see how old your post was... duhhh! Anyway, glad it went well. I've a mind to use up an old ATX supply this way but I'll have to content myself with making the case from plywood.
@@Kimdino1 Good luck , thanks for posting, ours has 5,12 and 24 volts, my boys use it for car stuff etc. Great circuit tester.
Very good teacher, thank you for your time, explanation and video!!!
Your instructional videos are absolutely first class. Thank you so much for sharing your knowledge like this.
The wiring diagram starting at 20:22 is the first of its type that I have seen on a site like this, and it makes all the difference in the world. A simple schematic like the one you use makes duplication a far simpler task than trying to remember all the connections made over 15 minutes of video. Genius.
Added comment: Posted the above before seeing the end of the video. A visit to the web site is even more inspiring. Step-by-step with downloadable pdf? Doesn't get any better than this. Thanks again!
I'm so glad I stumbled upon your videos. I graduated with a CS major, only taking a few digital electronics and ECE courses in my time at school so I am expanding outwards in that field and I was looking for a way to utilize parts that I already have.
You have made my night.
Thank you for another great video! I have built a similar bench power supply from an old ATX I had about a year ago. It has proven extremely useful and was quite easy to make. If you are at all interested in electronics, just do it! It's easier than you think, just be safe.
Also, I would suggest adding a USB port to the 5V line, as a power outlet for USB connected devices (Arduinos, for example). It makes the bench a bit more useful.
I'm not sure but ,if anyone else is searching for
electronic circuit board repairs
try Saankramer Electronic Magazine System (should be on google have a look ) ? Ive heard some pretty good things about it and my work buddy got amazing success with it.
Great suggestion on the USB ports. Thanks.
Hi Bill. Thank you so much for your detailed and easy to follow instructions. I've been looking for awhile for a tutorial on making my own Work Bench pc power supply. I am 76 years of age. I started in my teens and here I am still learning. I will be subscribing and following your channel from now on. Blessings
I just discovered your channel and i'm already subscribed because of the calm energy, very calm and soft voice too, people today are so exited that they yell and scream at each others when talking.
Thank you sir... thank you for posting this video!!!! This has helped so much! Thanks again.
OMG thank you a thousand times for sharing this stuff. I just found your channel and got subscribed. Greetings from Peru.
I was very please at your attention to detail and the clarity of your presentation. You are a natural teacher. Thank you
TWO WORDS, SIMPLE AND EXCELLENT!!!!! Better explained, it is impossible. Thank you very much for sharing your ideas.
We decided to take a drink every time he said power supply my buddy died it was the greatest idea ever
yessssss i hhad samre idieaaa
my son just upgraded his computer power supply and let me keep the old one. I'm gonna do this, thanks for the informative vid
One of the most comprehensive and complete videos I have ever seen on RUclips or anywhere. Bravo, and many thx!
As a note, brand new ATX from Microcenter is $14.99. You always create excellent videos. Thanks.
Excellent vid ! I'm looking at adding a bench power supply to my shop, and was wondering if one of these would make a good solution to meet that need . The clear well-measured narration was a GREAT help in following along with what you had in mind. All the BEST - and thanks again for a great vid ! - C.
Thumbs up! Really good teaching, thanks.
This is absolutely outstanding. Informative and crystal clear. Adding to that, there’s an accompanying article, even a printer-friendly PDF version. I cannot ask for more!
Thanks great work.
Hi, friend. Watch my video.
ruclips.net/video/RSJZJXzgZQo/видео.html
Great video, just subscribed. I'm a 31 year old college student in the middle of an AC/DC basics class. Because of the Covid situation I cant be on campus, I just learned about ammeters and this video is a great visual aid. I'm pursuing an associates in mechatronics, but this video is fueling a desire to continue my education into engineering. Thanks for being on RUclips.
Beauty bud- made one of these back a while ago. I actually had the same sort of issue with the v/a meter! ended up going with 2 analog style gauges with the wiper. Minus the AC - this is a great project for someone getting into electronics.
Recently been watching all your Arduino videos to brush up for this camera slider/robot arm I'm working' on ^.^ Gotta say you do a great job explaining things- keep up the good work bud! Smashing that like button!
Very nice video, well-explained and thorough. I do have a minor quibble, however. The ATX spec defines the PSO function as edge-triggered, rather than level-triggered. In other words, you do not have to lift PSO to +5V and keep it there - simply pulsing it to +5V will turn on the supply. The spec actually recommends a momentary switch for this function, rather than an SPST as you have used here. Turning off the supply is a matter of holding the momentary switch down for 4 seconds. So one brief pulse to turn on, 4 seconds to turn off.
I have not seen any damage to PSO circuits as a result of continuous application of +5V, just saying it's not part of the spec. Personally, I use the ignition switch from a 1974 Chevy Vega (the only part of the car worth keeping) mounted on the side of my case to do the start-up. So far, the PC has not leaked any oil, which confuses a Vega key.
Thank you for all your videos. I really appreciate it. You do everything in detail and you do your best to explain as simple/complicated as it is/gets.
Thanks again and respect
Hello,i am retired and live in the Netherlands,i was looking for info for arduino ,and i came here on this channel,and this is what i need.No irritating music is fun to see the video,s on the channel.So keep going on ,on this way.
Thanks mwrv1,
Thank you for taking the time as always to make such a diligent video.
Thank you very much for your interesting and helpful videos❗️You explain every detail so clear that everyone can understand what you are doing. For me as a hobby electronic your selfmade easy projects are so good. Hope you go on... Regards, Boris🇨🇭
Hi, friend. Watch my video.
ruclips.net/video/RSJZJXzgZQo/видео.html
I used this to build my first power supply! This video made it 100 times easier. Thanks so much!
concur with David Cole. 100% total confidence in your sessions and knowledge. Bravo. for goodness sake, keep it flowing
Outstanding presentation, THANK YOU SO MUCH. I have been on line for years but yours is the first i have subscribed to.
This rocked as all of your videos do. I found your channel when I got into Arduino and I am hooked. Please keep up the great work! Subscribed!
I created and 3D printed the control panel. I'll post the files on thingaverse and add a link soon.
I feel the same way!
Link? As it's been 8 Months.
Could someone tell an ignorant novice the fuse rating used please, I can't find it, not for lack of looking
it's amazing how organized your workstation is
This is one of a channel that I will watch and click on the ads to support the great work. Keep it up sir!
NICE!
I've had to quit my job so I can watch your videos. I must say, you are the last guy who needs to ask for subscriptions! I wasn't two minutes into the first one I watched before subscribing.
So, allow me to give back. I built such a supply some years ago, but utilized the -12 voltage and an LM338 variable voltage regulator to give me up to 24V and is fully adjustable. The current is limited to the maximum output of the -12V side, 800mA in my case, but it allows me to dial in voltages in between 3.3 and 24V 'cause sometimes you just need something different. Note that zero volts is not relative to ground of the unit; it is actually -12V relative to ground. But that's not the good part...
I used a very used and cheap ATX power supply and it quit after about a year. (Could be 'cause I taxed the -12V output.) When I replaced it, I decided that I wanted it to be plug-n-play so I searched for the correct housing and pins. Now I can change out the power supply by unplugging and re-plugging. So, here are the part numbers:
Molex #39-01-2201 Plug housing $1.38 as at 1/15
Molex #39-00-0076 Pins 0.22 as at 1/15
These are available at Mouser. Note that you'll need a special crimper for the pins.
I'm particularly excited about what I've taken away on the subject of the Arduinos. You've opened up new doors for me on that front.
The orderliness of your pegboard and the cleanliness of your bench is frightening. How do you get anything done?
Hi man, great video! I love how clear you are explaining everything on your channel. Thanks.
I have a question. I made my ATX bench, and all the outputs are ok, but with a slight instability in tension, like +/- 0.02 volts, and when I want to use it to power my servomotors (controlled by Arduino), this slight instability makes my servos jitter very hard.
Do you know what can be de cause and/or solution to this?
Thanks in advance everyone!
This is fantastic. I took electrical training and the master test. I later took computer classes that included building a computer from scratch. Now if your video had been included with any of my classes.
I would have had a better understanding of why the connections were as they were. Instead of plug in play and pray.
Thanks for this incredible video.
BRILLIANT! BRAVO! finally a very lucid and step by step video on how to make bench top power supply. Thank you!
Excellent video, covering all aspects. Awesome narration and very attractive voice with beautiful pronunciation & punctuation. One of the best diy video I've seen after great scott.
Thank you so much I love how good your ..🤙
For the first time in my life I understood what all these wires do. Other videos just rush through this topic. Thank you so much for making this video. 👍
I wish I have only quarter of what you have in your brain. In fact, you are more than a TEACHER. God kindly bless you for your good works. Keep it up.
Always great and clear, as usual, Thank you!!!
Excellent Video, Thank you for taking the time and doing this. I'm planning on building one, this has been very helpful.
@Jason Marquette Did you build one yet ???
Clear and concise explanation. Excellent presentation of a useful recycle-able computer parts. Good job!
Thank You, you explained everything in a very detailed and simple way. My knowledge of English language is weak, but spite of this I understood everything. You are perfect teacher.
I agree for what you talking about it is well explained, I can relate to convert ATX variables power supply into personal projects, it’s very handy to run those 3 voltages specially in electronics as required, conversions, modifications is an interesting hobbies as long as you know what you doing, it’s a pleasure to achieve something like that specially for testing, very good on you, just keep it up peoples thoroughly learnings how to educate them through your knowledge regardless, Bless you
Oh my god this vid is so helpful. I also found a supply. Thank you.
Hi, from South Africa, I do enjoy your presentation on all things electronic, I am a 73 year old retired Elec-Eng and I lecture for 10 weeks, once a week, August to November, at a "CAD" College. The students I lecture Mechanical and Architectural students and we do Electrical Design using AutoCAD and SolidWorks Electrical CAD. I have a few "breadboard" exercises for the students and I think your "ATX" power supply/bench supply is just the thing for these exercises. I will be visiting the computer-scrap-joints to ferret out a few ATX's units before August this year. thanks
I picked up an ATX at a second-hand store for around $5.00. I had no idea what to do with it. Thank you for the idea of a multi-volt power station.
Got a spare PSU, been wondering how to convert it into a power supply for my Electronics Projects, Thank you awesome video good explanation and I have one of those meters that I've never used too, job done, just waiting for the parts.
Just a note: my power supply has a brown wire and this one, if present, needs to be connected on the 3.3V line. Now I need to know if the resistor on the 5v line is mandatory (because the power supply seems to work without it)
I built one of these years ago and it was very useful. Instead of the load resistor on the 5V line, I attached an old style, filament light bulb. I mounted it on the PSU box and it helped inspect circuit boards at times. I also added a custom 0V dock on the box for my multimeter - one wire frequently needs to be grounded.
Another great video. This was a huge help for me. Gave me a great idea for a 3.3V, 5V, 12V power supply all in one. My favorite channel on youtube!
Great video, well explained and very useful. Quick question - what rating fuses did you use for each of the 3.3v, 5v and 12v lines?
And what resistance resistors
How do you tell if a particular supply requires a load as in a 8 to 10 ohm power resistor? Thanks
i am in love with this channel, im studying so i can teach my lil man, i know how to do things but terrible at teaching or explaining, so this helps me to put my experience into words.
Really love your site, very informative and detailed in your explanations. You make it easy to follow and understand how simple it could be, though it did not seem like that at the beginning. Thanks so much.