How to Hack a Computer Power Supply (PSU) To Use as a 12V DC Power Source

Thanks for the video! Exactly what I was looking for! Is there a way to tell how much amperage can be drawn from each wire? Or reversely, if I needed around 3A of 12V power on each of my 3 devices, how many wires each should I assign and connect?

can i power a desktop pc with a 12v battery

i need to now wayer who is the 12v power saply thank you please

I had hp slim desktop and micro psu (2 x 4 pins & 7 pins). The color of cable are 3 only( green ,black &yellow).Is it right for taking all yellow cables to make 12v supply ?I can't test because i hadn't multimeter. Thanks!

Hello, any risk of fires? do you need a fuse?

what if you don't connect all of the yellow and black wires. If you use just 1 black and 1 yellow wire, can you still get 12 volts? Essentially if you had 10 yellow and 10 black, could you not power 10 separate 12volt things?

and what happen i i just use the 12v cables from the 24 pin connectors ? can be good anyway to erogate at least 120W with the 12v on a 500W PSU ?

Please do you have a follow up video for one that can charge batteries i loved this one❤

Just so you know...your video is still being used 8 years later! THANK YOU!

I know this video is very old, but when I try to connect something to my psu the amp im using flashes protect and shuts itself off and the psu turns on but then turns itself off after the amp refuses power

I have a power supply but it not contains the Green Cable. Which Color Cable i have to connect with ground to awake power supply? Please guide

Thank you. I have a 12 volt PSU. There are several power wires with different max amps. I know from the label on the PSU that one power wire can deliver +12 volts at 16 amps. The problem is I don’t know which wire colour is the +12 volts 16 amp wire. I can not find any colour codes or specs online. I am wondering if there is a way to find out using a resistor or a rheostat?

Which wires do you connect for 20 plus amps?

I can't understand where u got power from ? Ac outlet ?

Really helpful. This saved me. I thought my PSU was broken. But I connected the green wire and yes, it turned on. One thing I would like to mention. If I touch the green wire to ground, the PSU turns on. I do not need to keep it connected with the ground wire. Can you please explain this. Maybe it only needs a brief signal from the green wire. Also can you please bore us with the details of the black ground reference wires. And all the different colours and what they do. This is very interesting. Also can you please show us how to find the 5 volt wires and is it possible to find out the max amps of each wire.

WOuld each individual black and yellow wire produce 12v DC? I am wondering if I can you this idea to make a Raspberry Pi cluster ?

I have a question I have not seen asked in a hundred or so comments. Is it really necessary to connect all yellow wires together? Couldn't 12V be achieved with one black and one yellow wires and the rest left connected to the ends and just tied back? Less mess and easier to work with

thank you budd, very nice

How many amps can you pull from that thing?

At last a one to stop dumb people being dead.

How much amper it's produce sir?

I gave this a try and worked a treat. Thank you for great instruction.

I want every detail, what does every color of cord do?

Why use the word "hack" instead of "modify"

No...thank you! Quick question for you. I've ran across a power supply with the reds, blacks and yellows, but the harness also use 4 wires going to an on and off switch on top of having very thin black and green wires being on a 2 pin connector.

I hav 4 yellow wires that have black strip on them? Any idea why?

Simple to the point and babble free. You sir have a new subscriber. Great job.

That's awesome. I was trying to figure out how not to spend the $50 to buy a power supply for my diesel heater and I have a bunch of cpu power sources in the scrap pile I can use. Thank you for this and I'm also interested in a lot of other stuff I see in your videos so I rang the bell. Cheers!

have you created a follow up video showing how to use orange, red and blue wires? besides the 12v that draws 13.5 amps pump I want to use the hacked computer power supply on I also have a pumps that draws only 3-6 volts? is there an easy way to determine the amps being put out by the power supply? if I exceed (produce) the volts or amps demanded by the pump will it hurt anything or should I step it down some how? can I step it down by putting an additional load on it like a fan, light or motor? ty for any guidance you can provide. 🙂

Thank you! I needed to add a load on the red +5V line in order to bring the yellow to 12V. Otherwise, yellow shows only 11.5v

God bless you

Thank you for this simple and clear video. But what about if I would like to turn it to a battery charger?

can you kindly show all the steps like when cutting the wires

i cannot find the next video in your video list on profile

thanks for this video. i got a bunch of PSU, old and new. i'm planning to convert it into multi power supply like for mobile phone, led lighting, cooling fan, speaker, power bank, keyboard and mouse RGB gamming, etc. i hope you notice my comment and give an advice. thanks.

Could I ask wat happens if your power supply has 2 cable ports

I made a peltier cooler and a dslr/telescope and the power supply got very hot. I found an old power supply and will give this a whirl. Thanks!

I'm no electrition but even though it's only using 12v doesn't it still draws a lot of power?

I swear I watched this video as a younger me and I'm back 6 years later because it's still the best way to get a decent 12v psu for such little money!
Thanks man!

can it run car 300 watt amplifier?

My supply keeps shutting down after it started even after adding a load. I used different resistors values, power resistors of 10 ohm even a small computer. It only worked when i used a small adjustable buckconverter with LCD. but it had no load and only used 0.17A on 12V and the power for the LCD was 0,026A with 3,3V

Bang kalau mau jadiin 24 vol gimana bang caranya

Do you Think a 750w powersupply would be able to charge a battery?

does the orginal switch on the PSU still work as usual ? Sir Pls ?

When i connect yellow and black wire into a dc 775 motor , PSU become auto off, why?

I probably won't get an answer but when I do that I get under 12v its usually only 11v and I cant go any higher

Question..... Was this a 20 pin or 24 pin atx power supply that you used? From my understanding if it was a 20 pin atx you have to put a resistor in line some where?

I have a DC pump that I use for pumping oil. do you think I could use a computer power supply to run it? I figured since it hooks up to my 12v battery that it might work with the 12v power supply. it uses 13.5 amp. ty for your assistance. 🙂

Which is positive and negative