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.
You're a great instructor, very well done. One correction about the 4 pin 12v connector, It's was made to provide good clean direct power to the CPU itself, not its fan.
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.
Hi, I thank you for sharing this information with us, let me tell you that you have impressed me very much first, by the way you express yourself and your way of teaching pacing yourself and selecting the wright or the correct terms and words that a lay man can easily understand. Thank you for that. I liked the video learned from it and will share from the Dominican Republic Guillermo. Your work shop looks so clean and seems like everything is in its place, way to go keep it up. I liked your teaching and recommendations and will built my work power supply. GOOD WORK, GREAT JOB.
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.
I had an ATX with a 24 pin socket that had two wires and pins different. At pin 13 brown and orange wire. At pin 22 pink and red wire. I jumped the brown wire to the 3.3 v output. I jumped the pink wire to the 5 v output. The ATX worked fine without the resistor from the 5 v to ground.
I was wanting to ask the same question, but with 900 comments or whatever, I figured somebody must have asked already maybe..I'm suprised you haven't got a response, neither by the man himself, nor a regular dude lol anywho, what I'm thinkin, bcuz of the way he said "if you find your supply doesn't require a resistor, you can just remove it from your project" (close enough quote?) I'm assuming you can also just try without it, and it will either work or not work. possibility it could work and seem fine until you put your face up to it, or walk away and BOOM bang or fire. but I like to think of the glass half full lol safety first, so if you poke around like I do, use caution and monitor the system until you get to know the monster you create:) hope this helps
Can you help me with something? I built mine and connected -12v as negative and 12v for positive in the regulable exit. I used a DC motor for testing but the entire power supply shuts down at ±3V, what can I do?
I have a dell ps-6311-1ds power supply that I'm trying to convert into a bench power supply. I can't get it to turn on when I connect the green to a ground. Is there something else I need to do to get it to power on? Do I need to add a load to the 3, 5 or 12 v? I've looked for hours online with no luck.
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.
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.
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.
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..
@tinkmarshino... My story precisely! Cardiologist by day, projects on weekends at 66!! Thank you for such well-done clear instructions for the project!
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.
So you do not realize that running a power supply using 220 volts is ACTUALLY more efficient then 110, I just converted a buddy's power source to 220 VAC using a PDU having different outlets to prevent confusion with 110 power. This dropped his power usage on his computer room by 40% This is why commercial networks use 208 to 240VAC. You can do a video on this. You will find many bit coin rigs that use 220VAC in America.
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.
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.
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.
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.
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.
I totally agree, too many now are into electronics destruction simply to extract gold, and other precious metals, but ignore the fact that the process creates more toxic byproducts that surpass the cost to dispose of, than the gold recovery.
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!
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
so.... the the ATX supply busted into flames, I did the connections as the HOOKUP DIAGRAM, only thing missing was 50watt power resistor . so please can any one tell me what exactly went wrong please
from 28:07 ...........There is a distinct difference in the usage here of the term ------Ground ----- This is actually the minus (- ) ..negative rail. and not to be confused to Ground of the Mains. !!!
Totally agree... The word GROUND should only be used to mean Earth/Ground. The green wire in your mains socket, the one coming in through the AC cord. That green wire is usually connected to the metal case of the power supply unit. It is NOT the same as the black wires! They call it the "0V" rail, as in zero volts. The 0V rail provides a reference point from which the other rails can be measured; that includes the negative voltages.)
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!
An embarassing personal story: One day i was building a Dell computer for my Dad, and it had the same kind of PSU like used in the video. It had the 115/240v "switch". That was the first time i stumbled across one of those. And there i lied, my head literally 2 centimeters apart from the psu while it was on, while i was debugging the PC. For some reason that PSU didn't have any other power switches that break the power going into it, so i figured the RED switch was the power breaker (having not read what it says on it). Boy was i wrong. I flicked the switch (while fully powered and loaded) and had the PSU's security fuse blast in full volume into my right ear. It took a month or longer for my ear to become as sensitive as it used to be. note for everyone: DO NOT FLICK THE RED SWITCH, DON'T MAKE THE SAME MISTAKE
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.
Dam you're good. this is what we want to see. If only i discovered you earlier in my life. I do have a question. Im in the process of making a bench power supply. and couldn't get them working on my bench, witch lead me to this video. if its my case that I do need a load resistor across the 5v and is something I dont have. Could I use a old HDD as a temp alternative?
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.
cool :) thanks. maybe you can combine voltages to come up with new values. (-)12v(+)connected(-)12v(+) = 24v (-)5v(+)connected(-)12v(+) = 17v (-)3v(+)connected(-)12v(+) = 15v (-)5v(+)connected(-)5v(+) = 10v (-)3v(+)connected(-)5v(+) = 8v
Two Points. 1) That resistor you are using is "wattage rated" only for being bolted down to a heat sink like the metal case. That is why the smaller size. 2) What about a look at the output waveform from each of the voltages AC coupled and down at 0.1 volts/div or lower? These power supplies are not of the quality of your bench supply. These are made for specific uses. That is the digital environment of a PC computer. That means, lots of current. Not a clean or accurate output. Therefore, it would be appropriate to show the output on a scope to see the waveforms down in the mv range. This would allow us to see how clean it is, or is not. When I look at my ATX supplies there are full of noise. This might be why you need a load on the 5V supply, to make the regulator start working. This is not an analog power supply. I would not suggest using this for analog circuits without a look at how clean the voltages are. Jim
@@spudhead169 I am not sure I understand what you are saying. I hope you are agreeing with me. I think the comments can be helpful in clarifying just what the results are from a project like this. I have given up on this project for my external SCSI drives used with my digital recorder. Just too much noise. I am going with linear supplies. Maybe this would work for something that is not sensitive to ringing switcher power supplies. Jim
@@jmoss99 I yes, I absolutely do agree with you. Videos like this are fine and all, but when the creator lacks experience we end up with a situation where others copy them and end up with issues as a result. Especially when the video has such a large viewership it actually starts to get a serious problem and needs to be called out.
@@spudhead169 Yeah. You are right. I found a demo of a mic preamp made by Groove Tube and the producer of the unit, the owner of Groove Tube was talking about how it was a differential mic preamp all the way through. I found a schematic on line and clearly it was not a differential preamp. I called him up and asked him what the heck he was talking about that it was 80% single ended. He got mad and said he was going to charge me for consulting fees. Can you imagine!?! Jim
I tested a similar AXT power supply which has a 115/230V switch button near the power cord socket before I cut it and it worked fine. Green wire connected with GND, and the fan was on. Then I cut the wires and organized same colour wires to a group. Weird thing happened, connected green wire to GND and the fan was on for a second and off. There is no problem with the ones without 115/230V switch button.
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.
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.
Maybe this was mentioned already in earlier comments, but make sure to connect the BROWN Vsense wire to the ORANGE 3.3V otherwise your ATX power supply will only run very briefly.
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.
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.
I liked you presentation very informative. I have several PC PS's from previous PC builds (~8 of them) over the years and now they will come in handy! Have you ever tried to argue with your spouse to not throw them out?
"the shunt..... is actually on the negative side of the meter" Shunts are defined as being across the meter, in parallel with it. So, what exactly do you mean? Only series resistors can be one side or other of the meter. Sort of like this ----------------------------|-------- meter -----|----------------- |------- shunt -------| What you're describing isn't a shunt. Did you check the voltage across the meter itself while it was working? Was there any measurable voltage drop? If there was, then it would be a simple matter of giving the meter itself an independent power supply and wiring it the other way around in the positive line instead of the negative, wouldn't it? In this way, you could use 3 meters if you wanted. If I'm wrong, I will stand corrected. I suspect this is why the meter itself comes with separate wires for powering it and to connect to the circuit being measured.
Shunts always confused me, also. I am sure he is right. This man knows his stuff. I am not saying you are wrong, I think we just need to study it more. I know it works. It is difficult to understand.
@@jlucasound There's only a problem if you try to power the meter itself from the supply you're measuring. Give it an independent power supply, and all that's needed to put the meter in the positive supply line, is to fit the meter the other way around. I've done it, and it works. The meter can't see the circuit it's in! All it knows is that the current is flowing in the correct direction for it to measure.
@@mrsillywalk Because of the way switch mode supplies are made, this can be dangerous to do. Sometimes it's possible but it can be difficult even for experts to tell what switch mode supplies will do if connected together in series. Overall, I wouldn't recommend doing this. If you go to a junk yard you might find an old 24v truck battery charger which would be easy to turn into a very heavy duty 24v linear power supply. That's probably what I'd try to do.
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🇨🇭
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.
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 !!
@@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.
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.
I thought the power on switch should be momentary, like on all ATX cases? When I continually ground the green wire, my Antec 850W quatro psu it turns on, then about 6 seconds later turns off, like it should. Also, that meter is not a power meter, power meters show watts. If you haven't looked at Aliexpress, they have dozens of electronic modules for dirt cheap, just be prepared for the slow boat.
The PSU actually gets its constant green wire connection to ground from the motherboard. The PC momentary on switch is wired to the motherboard and is a signal to the motherboard to ground the green wire on the PSU. Holding a PC power switch for 4 seconds tells the Mobo to unground the green wire. Is it possible your power supply needs a load on the 5v line to stay on?
@@fritzsmith7794 I just rechecked, the antec 850 quatro psu works like I mentioned (with load), I been using it as my main gaming pc for 12 years now. My other two PC (seasonic and thermaltake) act like you mention. Thanks for the info.
Very good work, really nice and useful!! I must confess, I used my old PSU from an (like yours) old Win XP PC just by conecting something directly to the wire needed, and wrapping the PS ON and ground toghether, but this is really a nice work, meticulous and useful!! Thanks for the idea!! And subscribed after watching video!!
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
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.
HOWdy D-B-W, ... Thank YOU very much ... YOURS is the most easily understandable EXPLANATION that I have watched ... Very clear description(s) ... and inexpensive design ... Thanks again ... COOP the WiSeNhEiMeR from Richmond, INDIANA ...
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.
You're a great instructor, very well done.
One correction about the 4 pin 12v connector,
It's was made to provide good clean direct power to the CPU itself, not its fan.
Clear and concise explanation. Excellent presentation of a useful recycle-able computer parts. Good job!
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
Hi, I thank you for sharing this information with us, let me tell you that you have impressed me very much first, by the way you express yourself and your way of teaching pacing yourself and selecting the wright or the correct terms and words that a lay man can easily understand.
Thank you for that. I liked the video learned from it and will share from the Dominican Republic Guillermo.
Your work shop looks so clean and seems like everything is in its place, way to go keep it up.
I liked your teaching and recommendations and will built my work power supply.
GOOD WORK, GREAT JOB.
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.
One of the best channels on RUclips. Big fan from India.
Thank you for this very interesting Video. You are really a perfect Teacher for my projects
Thank you !!!
Even though there are some mistakes, love this video
This guy is great... listen to him kids
Wonderful teaching, thank you, Sir.
I had an ATX with a 24 pin socket that had two wires and pins different.
At pin 13 brown and orange wire.
At pin 22 pink and red wire.
I jumped the brown wire to the 3.3 v output.
I jumped the pink wire to the 5 v output.
The ATX worked fine without the resistor from the 5 v to ground.
Thank you for your video. I've converted my into a car/phone charger.
Fantastic video. you mentioned the power resistor requiring a load (or not) HOW DO I KNOW IF I NEED ONE ??
I was wanting to ask the same question, but with 900 comments or whatever, I figured somebody must have asked already maybe..I'm suprised you haven't got a response, neither by the man himself, nor a regular dude lol
anywho, what I'm thinkin, bcuz of the way he said "if you find your supply doesn't require a resistor, you can just remove it from your project" (close enough quote?) I'm assuming you can also just try without it, and it will either work or not work. possibility it could work and seem fine until you put your face up to it, or walk away and BOOM bang or fire. but I like to think of the glass half full lol safety first, so if you poke around like I do, use caution and monitor the system until you get to know the monster you create:) hope this helps
Nice tutorial, appreciate for this, can possible to make this adjustable psu
On the circuit diagram,should the 330 ohm led resistors be orange,orange BROWN not orange,orange ,BLACK or was this done for clarity.
Thank you for your outstanding video!
Can you help me with something?
I built mine and connected -12v as negative and 12v for positive in the regulable exit. I used a DC motor for testing but the entire power supply shuts down at ±3V, what can I do?
WOW! Amazing, thank you!
Helpful POWER SUPPLY
Great video thank you 😀
Probably a stupid question but why the resistor? Why the load?
I have a dell ps-6311-1ds power supply that I'm trying to convert into a bench power supply. I can't get it to turn on when I connect the green to a ground. Is there something else I need to do to get it to power on? Do I need to add a load to the 3, 5 or 12 v? I've looked for hours online with no luck.
how to repair the computer has bip sound but there isn't problem of RAM and HARD DISQUE?
Nice. Power R can also be a Lightbulb
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
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.
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
I created the power supply. Would you like some pictures?
Link us!
Yes
Yes
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.
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
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
20:17 I don't think your wiring explanation could have been illustrated any clearer. That was great
I absolutely agree !
Thank you for such a simple explantion, informative video that anyone can easly follow. Great presentation.
It's so refreshing to see someone able to keep it simple while being specific and relevant, thank you.
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.
How do you tell if a particular supply requires a load as in a 8 to 10 ohm power resistor? Thanks
So you do not realize that running a power supply using 220 volts is ACTUALLY more efficient then 110, I just converted a buddy's power source to 220 VAC using a PDU having different outlets to prevent confusion with 110 power. This dropped his power usage on his computer room by 40% This is why commercial networks use 208 to 240VAC. You can do a video on this. You will find many bit coin rigs that use 220VAC in America.
I award you 5 stars for your videos, clear voice, no stupid music, perfectly explained, wish I could give you 1000 likes, thank you.
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.
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.
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.?
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.
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.
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.
I'd wish, we would reuse more of the old hardware, instead of trashing it.
Too much waste, too much resources thrown away.
I totally agree, too many now are into electronics destruction simply to extract gold, and other precious metals, but ignore the fact that the process creates more toxic byproducts that surpass the cost to dispose of, than the gold recovery.
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
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
Can you create a parts list that includes links so we can get the exact parts?
so.... the the ATX supply busted into flames, I did the connections as the HOOKUP DIAGRAM, only thing missing was 50watt power resistor . so please can any one tell me what exactly went wrong
please
from 28:07 ...........There is a distinct difference in the usage here of the term ------Ground -----
This is actually the minus (- ) ..negative rail. and not to be confused to Ground of the Mains. !!!
Totally agree...
The word GROUND should only be used to mean Earth/Ground. The green wire in your mains socket, the one coming in through the AC cord. That green wire is usually connected to the metal case of the power supply unit. It is NOT the same as the black wires!
They call it the "0V" rail, as in zero volts. The 0V rail provides a reference point from which the other rails can be measured; that includes the negative voltages.)
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!
An embarassing personal story:
One day i was building a Dell computer for my Dad, and it had the same kind of PSU like used in the video. It had the 115/240v "switch". That was the first time i stumbled across one of those. And there i lied, my head literally 2 centimeters apart from the psu while it was on, while i was debugging the PC. For some reason that PSU didn't have any other power switches that break the power going into it, so i figured the RED switch was the power breaker (having not read what it says on it). Boy was i wrong. I flicked the switch (while fully powered and loaded) and had the PSU's security fuse blast in full volume into my right ear. It took a month or longer for my ear to become as sensitive as it used to be.
note for everyone:
DO NOT FLICK THE RED SWITCH, DON'T MAKE THE SAME MISTAKE
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.
Dam you're good. this is what we want to see. If only i discovered you earlier in my life. I do have a question. Im in the process of making a bench power supply. and couldn't get them working on my bench, witch lead me to this video. if its my case that I do need a load resistor across the 5v and is something I dont have. Could I use a old HDD as a temp alternative?
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.
It's my big fault😔 that I have watch this video on Dec 21 Instead of that I should watch this video on 2 Feb 19
Thank you so much sir for this idea
cool :) thanks.
maybe you can combine voltages to come up with new values.
(-)12v(+)connected(-)12v(+) = 24v
(-)5v(+)connected(-)12v(+) = 17v
(-)3v(+)connected(-)12v(+) = 15v
(-)5v(+)connected(-)5v(+) = 10v
(-)3v(+)connected(-)5v(+) = 8v
i did it -12v with +12v making 24v for sensor and automation and it work fine
Okay, but note the current output is limited on the negative connections.
Two Points.
1) That resistor you are using is "wattage rated" only for being bolted down to a heat sink like the metal case. That is why the smaller size.
2) What about a look at the output waveform from each of the voltages AC coupled and down at 0.1 volts/div or lower? These power supplies are not of the quality of your bench supply. These are made for specific uses. That is the digital environment of a PC computer. That means, lots of current. Not a clean or accurate output. Therefore, it would be appropriate to show the output on a scope to see the waveforms down in the mv range. This would allow us to see how clean it is, or is not. When I look at my ATX supplies there are full of noise.
This might be why you need a load on the 5V supply, to make the regulator start working. This is not an analog power supply. I would not suggest using this for analog circuits without a look at how clean the voltages are.
Jim
We need more guys like this to put these amateur videos into context.
@@spudhead169 I am not sure I understand what you are saying. I hope you are agreeing with me. I think the comments can be helpful in clarifying just what the results are from a project like this. I have given up on this project for my external SCSI drives used with my digital recorder. Just too much noise. I am going with linear supplies. Maybe this would work for something that is not sensitive to ringing switcher power supplies.
Jim
@@jmoss99 I yes, I absolutely do agree with you. Videos like this are fine and all, but when the creator lacks experience we end up with a situation where others copy them and end up with issues as a result. Especially when the video has such a large viewership it actually starts to get a serious problem and needs to be called out.
@@spudhead169 Yeah. You are right. I found a demo of a mic preamp made by Groove Tube and the producer of the unit, the owner of Groove Tube was talking about how it was a differential mic preamp all the way through. I found a schematic on line and clearly it was not a differential preamp. I called him up and asked him what the heck he was talking about that it was 80% single ended. He got mad and said he was going to charge me for consulting fees. Can you imagine!?!
Jim
Your videos are great, good quality and very well explained. Keep up the good work.
I tested a similar AXT power supply which has a 115/230V switch button near the power cord socket before I cut it and it worked fine. Green wire connected with GND, and the fan was on. Then I cut the wires and organized same colour wires to a group. Weird thing happened, connected green wire to GND and the fan was on for a second and off. There is no problem with the ones without 115/230V switch button.
Please help me. Thank you very much!
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
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.
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.
OMG thank you a thousand times for sharing this stuff. I just found your channel and got subscribed. Greetings from Peru.
Maybe this was mentioned already in earlier comments, but make sure to connect the BROWN Vsense wire to the ORANGE 3.3V otherwise your ATX power supply will only run very briefly.
Thanks... Was looking for exactly this comment.
Thumbs up! Really good teaching, thanks.
Exelant work may I as ok we're do you get you supply's ???
You, sir, are my new favorite channel!
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.
A wonderful video with clarity in your speech and technically superior!. March on Sir with your great service
Why didn't you use switch for selecting voltage?
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.
I liked you presentation very informative. I have several PC PS's from previous PC builds (~8 of them) over the years and now they will come in handy! Have you ever tried to argue with your spouse to not throw them out?
"the shunt..... is actually on the negative side of the meter"
Shunts are defined as being across the meter, in parallel with it. So, what exactly do you mean?
Only series resistors can be one side or other of the meter. Sort of like this
----------------------------|-------- meter -----|-----------------
|------- shunt -------|
What you're describing isn't a shunt. Did you check the voltage across the meter itself while it was working? Was there any measurable voltage drop?
If there was, then it would be a simple matter of giving the meter itself an independent power supply and wiring it the other way around in the positive line instead of the negative, wouldn't it?
In this way, you could use 3 meters if you wanted. If I'm wrong, I will stand corrected.
I suspect this is why the meter itself comes with separate wires for powering it and to connect to the circuit being measured.
Shunts always confused me, also. I am sure he is right. This man knows his stuff. I am not saying you are wrong, I think we just need to study it more. I know it works. It is difficult to understand.
@@jlucasound
There's only a problem if you try to power the meter itself from the supply you're measuring. Give it an independent power supply, and all that's needed to put the meter in the positive supply line, is to fit the meter the other way around. I've done it, and it works. The meter can't see the circuit it's in! All it knows is that the current is flowing in the correct direction for it to measure.
@@tasmedic May i ask a question of you as this is an older post. Can i use two ATX power supplies in series to get a 24v output?
@@mrsillywalk
Because of the way switch mode supplies are made, this can be dangerous to do. Sometimes it's possible but it can be difficult even for experts to tell what switch mode supplies will do if connected together in series.
Overall, I wouldn't recommend doing this.
If you go to a junk yard you might find an old 24v truck battery charger which would be easy to turn into a very heavy duty 24v linear power supply. That's probably what I'd try to do.
@@tasmedic Thank you!
Don't forget the -12V rail (typically a blue wire). That would allow your benchtop supply to go to produce 24V as well.
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 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.
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.
I'm a beginner at building electrical divices. I had a question about the fuse capacity you used for this project. 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.
How to find out if my ATX needs a resistor or not?
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
Great teaching style!
Thank you sir... thank you for posting this video!!!! This has helped so much! Thanks again.
I thought the power on switch should be momentary, like on all ATX cases? When I continually ground the green wire, my Antec 850W quatro psu it turns on, then about 6 seconds later turns off, like it should. Also, that meter is not a power meter, power meters show watts. If you haven't looked at Aliexpress, they have dozens of electronic modules for dirt cheap, just be prepared for the slow boat.
The PSU actually gets its constant green wire connection to ground from the motherboard. The PC momentary on switch is wired to the motherboard and is a signal to the motherboard to ground the green wire on the PSU. Holding a PC power switch for 4 seconds tells the Mobo to unground the green wire. Is it possible your power supply needs a load on the 5v line to stay on?
@@fritzsmith7794 I just rechecked, the antec 850 quatro psu works like I mentioned (with load), I been using it as my main gaming pc for 12 years now. My other two PC (seasonic and thermaltake) act like you mention. Thanks for the info.
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
Thanks. A brilliant video, well explained, everything covered. More of this standard please.
As a blue dragon, I approve of your taste of blue.
Is there a way to know if the powersupply requires the 5 volt load?
I think you are the teacher we all wish we had, I'd be an engineer if I saw this in the day. Thanks!
Thank you. This noob to electronics is understanding many things I have been struggling with. I appreciate the way you are teaching.
NEW DRINKING GAME! Drink every time he says "power supply" 🤣🤣🍻
Swapped it out for bong hits. Pretty blazed right now
Very good work, really nice and useful!! I must confess, I used my old PSU from an (like yours) old Win XP PC just by conecting something directly to the wire needed, and wrapping the PS ON and ground toghether, but this is really a nice work, meticulous and useful!! Thanks for the idea!! And subscribed after watching video!!
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
I would have brought out the negative voltages so that when you are using older op amps, you have the negative voltages necessary.
Outstanding presentation, THANK YOU SO MUCH. I have been on line for years but yours is the first i have subscribed to.
The best video on powersuply on You Tube, very PRO thank a lot Sir.
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.
HOWdy D-B-W, ...
Thank YOU very much ...
YOURS is the most easily understandable EXPLANATION that I have watched ...
Very clear description(s) ...
and inexpensive design ...
Thanks again ...
COOP
the WiSeNhEiMeR from Richmond, INDIANA
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