Questions tagged [atx]

ATX is the standard for PC power supplies. It has +3.3 V, +5 V, and +12 V. They share a common ground. It has a PS_ON# signal which needs to be grounded to turn it on. Don't open power supplies that run on line voltage (AC). They have dangerous voltages and currents inside

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Dangers of Old ATX Power Supplies?

I was tearing open an old ATX power supply from one of my old computers today, because it was making a funny high-pitched wining noise. I noted that several of the components within were starting ...
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363 views

Powering a DC to DC power supply that came without an adaptor

I bought a mini ATX DC to DC power supply on eBay to use with a motherboard. Unfortunately I did not notice it came without any kind of adaptor. So what I have is basically two wires, red and black, ...
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Is the flatness of DC output of a typical ATX power supply unit worse than a power adapter?

I converted an ATX power supply unit (Seasonic, 330W) into a standalone power adopter (by adding load, etc.), to which I connect multiple things. When I plugin a computer and a monitor each to a 12VDC ...
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1answer
830 views

building a variable bench supply using microAtx 24pin atx then using attiny44 as voltmeter

Ideally I should have a bench supply so I don't have to keep buying 9v batteries. I've taken a micro atx psu out of a pc I have. It has a 24 pin ATX connector. I'm not going to take apart the psu ...
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3answers
417 views

Use PSU as replace for broken source +12Vdc 3.33A?

I need 12Vdc 3.33A source power for Silicon Graphics 1600sw display, I have two ATX computer power supply. Is it possible to use these PSU as replace for broken 12Vdc 3.33A adapter ? UPDATE: I ...
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How to make my own atx power switch?

I'm assembling a new computer from components. It's something I've done quite a few times, but now I would like to skip the case. Except for some structural integrity and LEDs, the only technical ...
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How can I use an ATX power supply for my own experiments?

I've been trying to turn on an ATX power supply I had lying around, and I plan to use it for some electronic experiments. Note: I don't want to have to open up the PSU for any reason. I've tried ...
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24V 3A from ATX power supply?

I am looking for a cheap way to get +24V DC max 3A from computer power supply. I prefer easy soldering solution like DIP, and standard components that do not need to be purchased over internet. Any ...
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What's all this “rails” nonsense on a computer power supply?

This is in danger of becoming a computer question, but I've always wondered why do computer power supplies have so many 12V "rails". I have a 800W dead supply with four 12V 16A "rails", but internally,...
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Fixing an ATX PSU

I have an 800W ATX power supply given to me by a friend because it doesn't work any more. It's quite a beast and would set me back a considerable amount new, so I'd like to see if I can fix it. Well, ...

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