ฝัง
- เผยแพร่เมื่อ 15 มิ.ย. 2024
- In this video show converting computer ATX Power Supply to Lab Bench Power Supply.
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I find it curious that people who are on TH-cam watching videos on making a light-duty, benchtop power supply from an ATX PS (not your everyday project for your everyday TH-cam user, after all) are bitching about the music rather than muting their sound. If you can't figure that out, people, perhaps playing around with sharp and/or hot objects is probably not for you.
Well done, RF.Odel. Thanks for your efforts.
Brian..........well said.
touche
well said, the music isn't even that bad
Superb conversion of computer ps to bench ps. Kudos and post such videos.
Just love the way they explain what they are doing and what components to use ETC.
cool....nice mix power supply for everything needed
You apparently wired your rocker switch backward. 1 is on, 0 is off. It looks like you pressed the 0 to turn it on. If it works, I guess it's ok, but someone may plug it in thinking it's turned OFF when it's actually in the ON position. Also, FWIW, it would have been much better if you had replaced the cheesy music with some narrative explaining what you are doing, and why, as you move through the conversion, for the novice tech who is trying to duplicate the project. Yeah, it's about as simple a project as it gets, but a little dialog would have taught a lot to those that are new to this kind of thing.
i agree
Example, a novice would not pick up on the fact that the terminals that are mounted on the housing NEED TO BE ISOLATED from each other
example, a novice may think.. fuck this, i'll just get a few nuts and bolts and screw it on
and then..... BANG HEHEHE
perhaps it may have been helpful to explain that the terminals must not have a conductive path to each other and that they are insulated from the housing
i agree, a narrative would have been better than this teeny bopper shit that seems to now be the irrittating norm on the net
Agree, this music is such shit! Why is it every time I come across something like this there has to be such shitty music just on repeat for the whole friggen video - SCREW OFF!
Yeah I remember watching and thinking "Oh man, I hope those connectors are isolated from the case..."
The best part of that video is the Head Shrink comment. You'll definitely need one after listening to that music.
kabilmla
Very professional-neat job. thank u 4sharing!
Vielen Dank für die ausführliche Erklärung und diesen schönen Schaltplan
I've just made one of these with a mini-ATX PS. Space is not so much, so it's a little difficult, but I'm really proud.
Brilliant - the circuit diagram says it all and the video is very good and self explanatory.
7:18 note: Indian logic used: flick switch to OFF to turn power supply ON
Отличное видео, все просто и понятно. Спасибо.
Es ist eine Super Sache Gerät. Bravo
Nice video. Secondary line needs new capacitors. Swollen caps.
Por el proyecto y la musica.... Me suscribo. Gracias por tu enseñanza!!
This is a simple yet neat design, but four wires for the 12v rail are way too much, anyway it depends on the power delivered by the single rail. For example, if you have a 18AWG wire, it can deliver an ideal 16A of current, tuned down to 10A to be safe. If the 12V rail can deliver a maximum of 20A two wires might be enough to meet the power limits of the PSU - and by the way, small electronic projects for beginners rarely take so much current. The same rationale could be applied to the other rails. Usually the -12V and -5V (if you have it) gives a fraction of amp, so you will never see more than a single wire from the board for each of them.
An overall classic for a beginners project. It teaches an enormous amount of stuff about electronics.
What a load of crap, you can never have to large wire gauge, and piss off with powergrid calculations.
And this teaches absolute nothing about electronics.
So, can i just use 1 wire? Or use 2 wire?(sorry bad English)
Video con spiegazione fatte bene. Potrebbe postare uno schema con l'aggiunta di un voltometro/amperometro. grazie
I have a 850w thermaltake and need to know whether I still need a dummy load and which one to get. I get the whole led and resister part but still don't understand which dummy load to get as my psu is a newer style and some people say I don't need one.
Output Specification
AC INPUTInput Voltage: 100V-240V
Input Current: 12A
Frequency: 47Hz-63HzDC OUTPUT+3.3V+5V+12V-12V+5VSBMax
Output Current 25A 25A 70A 0.8A 3.0A Max Output
Power
130W 840W 9.6W 15W
Continuous Power850W
wow great recipe I will try it but probably went too heavy on the coconut shavings lol
It work for a device of 24v 5 amp..good job
If you guys look closely at 7:20 , he connected the wires the opposite on the switch lol, When he presses the O side, its supposed to be OFF not ON..
joshua199628 O side is Off. That is right.
This is not the only trouble here. Watch on capacitors!
Muy buen video, estoy haciendo el proyecto, una pregunta, la resistencia de 10w que función cumple?
Muy buena idea y bien llevada a la practica.
Anyone else notice he wired the on/off switch backwards?
The black wire you cut right before step 5. What and how did you do with the other cut end that went to the supply unit?
You already know that the "-12V" connection delivers only a few milliamperes?
The -12V connector was needed by older sound cards to produce a balanced output signal.
In today's power supplies you will hardly find -12V or not at all, because it is unnecessary.
I dont mean to be off topic but does anyone know of a tool to get back into an Instagram account..?
I stupidly lost the login password. I would appreciate any help you can offer me.
@Malcolm Winston instablaster =)
@Maximilian Santiago Thanks so much for your reply. I got to the site on google and Im in the hacking process now.
Seems to take a while so I will reply here later with my results.
@Maximilian Santiago it worked and I finally got access to my account again. I'm so happy!
Thanks so much you saved my account :D
@Malcolm Winston No problem =)
THANKS VERY GOOD EDUCATIONAL
Its an idea to remove all the extra wires, they arent needed, and just get in the way. Also use a different coloured post for each voltage, to help removed accidental wrong connection
Excellent and didactic video. I made the same ATX converting power supply following your diagram and adding an step-up booster to increment the 12v to 18v which support 15 A, in order to connect an drill. It works but the problem its the dummy load resistor overheats (it is a 5 wats but 9 ohms; the only i found in my store). Is that the cause of the overheating? Thanks for your aid.
Yes, replace it with a higher ohmn resistor
@@everythingfeline7367 Thanks a lot. I'll try
Why that 5 ohms dummy load is necessary? I think is 1A running there, could be 50 ohms or even 100 ohms?
wow very nice idea thank you
Well done 🥇how many the resistor? Thanks
great presentation thanks and God Bless : )
What about 12v 10 amp black/yellow ??
Thanx for video
-12V is only 0.3A connecting with 12V (15A) will be 24V total, but how many Amps can be used (only 0.3A or 15A)?
Hi, thank you for this vidéo. But why do you connect the 3.3v with the 3.3v sense? and is there a great importance in the ciment resistance value of 5homs?
The 5 ohm resistor on the 5v rail is used as a dummy load, as some power supplies will shut down if no load is detected.
Joseph Svensson , I know that but the value of 5 ohms is it important ? can i use 10 ohms for example? thx
Thierry ON Well 5 ohms is used to ensure a steady 1 amp load on the 5v rail but if you have two 10 ohm resistors you can put them in parallel to get 5 ohms and make sure it still has a 1 amp load. The dummy load requirement varies by power supply and some might not require it at all.
Good Odel, can we step up to 64volts in this same setup? pls make some videos. thanks
Girdhharm santosh kumar
very cool! what is the BLUE -12V used for?
SOME PROJECTS MAY REQUIRE A -12 & A +12 WITH A GROUND WHERE THEY MEET. DEPENDS ON COMPONENTS AND CIRCUIT CONFIGURATION.
Op amps use a minus supply.
I know very little about this, can you tell me why you need all the cables and not just one of them? assuming you will use less than 100 W of power. what is the requirement to power security cameras on a distance of 50 meters? do I need thicker cables? do I need a more powerful power supply? what happen if I draw 400 W off a 500 W rated cheap power supply, is it safe or it will damage the power supply fast? Sorry for my English
you solder each wire of the same color to get all current (amper) available in the PSU?
Nop, all wires come from the same place, thats needed when going to connect something big
すみません、緑と黒を繋いでも電源が入らなのですがどう繋げば出力出来ますか
3 of your blue electrolytic capacitors situated next to your wires that you are working with, the tops look bloated and are in need of replacing.
I don't know why :D
, but they I saw at start, one caps is bloated.
Видеото е много добро и поучително. Само не разбирам целта на 5омовия резистор?
Ты бухой это писал ?
@@konstantinskobelev2091 ты далёкий
@@konstantinskobelev2091 Он болгарин. И пишет на болгарском.
За музон который бьет по ушам палец в низ.
Nice simple, useful conversion, thanks. But your soldering techniques leave a lot to be desired. They will result in cold solder joints, increasing the resistance of the connection, reduced current. voltage drop, and the potential for a broken connection. Sorry.
Why? Care to explain. I'm noob so i don't know.
Verry Nice ! Sehr Schön !!!
Je vous suit merci très intéressant le réssiclage
Saludos, excelente aporte.....
Don't use a lighter to shrink your tubing! If you can't afford a proper heat gun, just use your soldering iron!
A heat gun is good, also a propane small torch.
use whatever you want, if you have the specific tool that's good.
if you are enthusiast in DIY no matters the tool, you can upgrade tools when practice more get an advanced level :D
Hello i have a doubt...why you add one dummy resistor in between on 5v (10w 5ohm ) and the ground.....
this resister act like mother board is connected
Hi, thank you very much. Could you please advise the part number of the red and black screw terminals...maybe a weblink to purchase. Also for the on / off switch. I would really like to make this.
They are called binding post get them on amazon
You can even get them at Lowe's.
Terima kasih banyak....
SIR, ANOTHER QUESTION IF U WOULD MIND, WHAT IS THE VOLTAGE OF THE LED? TNX AGAIN, KEEPSAFE
There is no voltage rating for LEDS, although the internal voltage drop varies a little, depending on the color. The only concern is current (should be less than 20 ma.) so any resistor between 220 and 470 ohms will work fine. If you want an indicator on the 12V lines, use 470 - 1,000 ohms. Be aware that LEDS are polarized, and will not turn on if connected in the wrong direction. The flat edge (cathode) should face the ground (or negative) connection.
Most power supplies wont need the 10W resistor on the 5V rail and the green and black power wire should be a 10K resistor instead since most supplies have a mains power switch that should be used in this case.
-
Reference: playtool
Hi Mywindow, I didn't see a mains switch on his PSU. I've got a Dell PS-5201-7D ATX PSU that I'm planning to use for a similar supply, and it doesn't have a mains switch either. I think I'm going to mount the PSU box to a board, add a master (mains) power switch, and maybe add a front panel on which to mount the binding posts and LEDs (maybe a Chinese digital volt / current panel-mount meter, too), just to stay well away from the big transformer that sits just behind that grill where he mounted his components. No sense tempting Mr. Murphy!
very good idea master ❤️❤️👍
Does no-one else see the bulging capacitors on the side of the main board where all the voltage wires are connected? I'm not sure if it would support extended use. Though that's not likely the intended use for this project, bulging caps just make my spidey sense tingle in general
Ya, i saw them. He neeed to change them
Merci beaucoup pour les informations
Inanzi tutto complimenti x il video poi vorrei sapere perché il mio alimentatore si è fermato e non parte più? La ventola da un scatto ma non parte ? Da premettere che non ho fatto nessuna modifica ho solo raggruppato tutti i fili dello stesso colore e poi lo usato per far funzionare un pirografo con i filo rosso da 5v
really your good jobs
Interesting video. I would like to ask a question. What is the function of the power resistor?
Dummy load to trick the ATX ps that is connected to a mother board that way it will not go in to stand by mode.
@@jomhdz Thanks
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الاخ حسن دبوه هل يوجد في بور الحاسب فاصل الشحن وشكرا
En que pata de la led se solda la resistencia ??
Why heat the 10 watt resistor
Do you have a component listing / name and using a 110v instead of the 220v shown?
If you have a 110 supply and 110 mains voltage the only thing you would need to change might be the switch used to break the mains connection, but if it can handle 10A at 110v you should be fine.
Power switch is reversed - 0 (zero) means off, 1 is on.
It looks like there are bad capacitors on that psu?
Saludos amigo. excelente aporte
Wooow. Good job
why if i cut the wires for shorter lenght at beginning the power suply no longer work even i connect green to black ?? help please
So what can I do with the -12v? I dont have a use for this by itself, but I have heard people say I could combine it with one of the +12 lines to make 24v...is this accurate?
From other videos I've watched, the -12v can be used with the existing voltages to make new ones. Don't know how that works though.
12V + and 12V - connected opposite poles gives 24V across.
@@TheJagjr4450 Awesome! Thank you for the knowledge.
Does that apply to the amperage as well when using the 12V + & - rails together?
Cheers
-12V is only 0.3A connecting with 12V (15A) will be 24V total, but how many Amps can be used (only 0.3A or 15A)?
I imagine all these cables will affect your cooling.
Not too terribly. I did the same thing with my old PSM. I would just advise maybe adding a secondary cooling fan on the outside of the box to help the main fan keep up with the added air flow restriction. It works a treat. Mine now has no problem keeping up with any amount of high power draw. A simple fix.
un sub mas. buen video
Can anyone help? I am using a 12v 1200ma plug in adaptor to power a 1s lipo Boldclash PO1 batt charger. It accepts input from 6-15 volts. For curiosity I metered the output of this wall charger and it reads 16.4 volts! Why so much higher than what it is labeled? I metered several others I found and they also read several volts more than labeled. No loads on any of them. Is it okay to use it? It appears hefty enough. Weighs a lot more than others and has larger guage plug wire.
You have fallen into a common trap. Unregulated power supplies can be several volts higher than what's on the label. When you put the power supply under load, the voltage will say to be roughly then rating on the label.
nice stone Bro
mantap batu cincin nya.
очень много вспухших конденсаторов в цепях питания 12 вольт и 5 вольт
As a general rule, how many Amps can someone expect to get through (or out of) the 12v terminal using a 550 watt power supply, assuming that ALL 12v wires are soldered together? In other words, how many amps will most 550 watt power supplies provide.
Old ones can supply no more than 30-35 amps, however new psus have the main power in the 12v rail so there are power supplies that can provide up to 50 amps, i assume yours is about 20-32 amps
You can work it out
WATTS = Volts x Amps
you know the Watts
you know the Volts
Divide it into it and solve for Amps
or.. you can just pop on a multimeter in Series and measure the Amps
Hi, please help.. The green light is on, the red goes on for less than 1sec and then off. No power output at the outputs... Load resistance 10watt 5.6 Ωhm
Good job brother
I have one serrious question for those who want to help me
I have atx akyga ak-b1-400 +3,3V 23A, +5V 25A, +12V 18A , -12V 0,5A +5V Sb 2,5A total power 400W. Which buck Amperage should i use and what value should be the fuse inside?
Two questions: why do u need a load resistor? And what is the negative wire used for?
Dummy load to trick the ATX ps that is connected to a mother board that way it will not go in to stand by mode.
@@efdawahfan oh, thank you! I got different explanations before. One of them said it's to smooth out when connecting devices but isn't it whar a capacitor does?
@@VanDerLaars A capacitor does something similar, but this is a different situation. The resistor puts a load on the power supply, to stabilize it under abrupt load changes. Similar: If you are trying to push a car, it helps a lot if the car is already rolling a little bit. If you just slam into a stationary car, you'll only hurt yourself, and the car will go nowhere. :-)
@@dalexplym4882 much better explanation with the car! Thank you!
can we modify the psu to get center tapped? I need +12v ct -12v to powered an ocl power amplifier
use the blue wire for -12v (be aware the blue has considerably less amps though)
yellow wire for +12v, then the obvious black for 0/ground
nice work bro
Re-cap, if you use at this time ;)
what kind of resistance did you use?
Its on the schematic at the beginning of the video.
thank
SIR, IF I CONNECT THE GREEN AND BLACK, ANY BLACK WILL THE FAN WILL RUN OR I SHOULD PUT THE LED STANDBY CONNECTION,? TNX FOR REPLY.
SIR, WHAT IS UR ANSWER? IF U DONT MIND. TNX
Just connect the green to any black. The standby is just for information, and is not necessary at all.
Why do not you change the defective capacitors of the stabilization circuit?
This also was my first question :-) The PS in this video will not work very long: 3 def. cap., maybe more.
I have replaced many PS in the last years repairing computers.
Resitor for 5v for what use.?
Thanx
I have a psu that worked, connected green to black and it turned on the fan. After cutting the wires, when I connect green to black, it spins the fan for half on sec and then it stops. And idea? The purple 5v has power for an led, but the other wires stop after half second
Same problem here.
I gave it also 5v and 12v small loads, won't start...
Have you managed ?
@@MilanTheMan69 yes. Connect the brown wire (follow the path to 3.3sense) to one of the orange wires(3.3v)
@@pythoneatssquirrel It works.
Thank you friend. 🙏
This was faster then I thought.
Did you put a resistor on a 5V lead-some ATX's must have it to start up.
hi, what is the use or purpose of a resistor paralleled between +5 and ground? thanks!!
Hi, the resistor provides minimum current consumption, some ATX PS needs this for working itself
Mas cara mendapatkan 12volt dengan Watt yg besar bagian kabel mna aja yg d kombinasikan?
@@father_made92 kabel kuning dan hitam jadi plus beban ke kabel kuning dan ground beban ke kabel item
I like the design, but that "music" was very annoying.
припаять клеммы к проводам и блок сразу стал лабораторным?)))
someone can tell me , why is a ceramic resistor (10w 5ohm) in the 5volts channel?, i also made my own bench but i never put that resistor.
thanks before hand
On some power supplies, a dummy load is necessary otherwise the unit won't power on, or the voltage may fluctuate.
SirFrag32 thanks😉😉
the ceramic resistor makes the roll of a "device" conected, so the power supply always delivers power.
I understand the function of this load resistor, but why such a low value? This puts a load of 1 Amp on the power supply that is totally wasted as heat. Would a smaller (less ohms) resistor not function as well, and waste less power? This was an interesting build, thanx for sharing.
It seems to me that you are right. A smaller charge it is a reduce of wasting power. I'm working in my power supply and I won't use the resistors, instead I will place some leds to illuminate my desk. Greetings.
My Powersupply starts to hum when I have only 5V or 3.3V hooked up to something.
I do not have a Resistor, and dont need one since I never start it without some kind of load hooked up to it. When I connect a 12V Motor to 12V though it runs fine. When I connect that Motor to 5V it still runs fine but the powersupply generates a noticably internal huming sound.
Any idea what that might be?
Excessive current flows through motor and motors internal current causing the hum, try using a capacitor about 2200uf and 20volt and needs a parallel resistor whose resistance must be similar or lesser about -5% and wattage must be some high kw. Or use some flyback circuit.
@@aperson9375 Its not the motor, its the power supply that hums.
Question is if it is doing any damage. If not, then I really dont care.
@@peteraugust5295 Yes the hum can come from the power supply because of the inrush current that needs by the motor and also the ac current generated by the motor winding itself. Whenever you connect a motor with some pwm based power supply, there's a need to remove those current, otherwise can burn the ic that controls the psu voltage and phases, this is why computer dc fan were designed where coils were stable but magnets moves and direct connection are not done rather MOSFET based connection are done within the circuit.
You have to check how much current your motor draws using a clamp meter then needs a capacitor to filter out current properly and also needs some Zener diode and load resistor to remove the back fire current comes from the motor. Circuit are available on google you can find them.
@@aperson9375 thanks.
May I know that :
1. why add 5ome/10 w resistor?
2. what's the purpose add a switch between Black and Green?
Can I bypass these 2 components?
1. If you do not add a resistor the psu will just not work properly because a computer always draws current
2. If you connect the green and black wire the whole psu will turn on except the purple wire which is always on if the power is connected.
can we use 24V (+12v and -12v) to?
yup
Why the 10W 5 ohm resistor? What is that for?
Dummy load
@@relaymatik5984 can i make this dummy load with 10 Watt 22 Ohm between 12V and GND ?
@@metinplayer1999 no use only 5v
Why this 5 ohms dummy load is necessary? I think is 1A running there, could be 50 ohms or even 100 ohms?