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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Atx psu yellow wire [closed]
I have an old 500 watt psu, the yellow cables on the psu box say 12 volts, but with the voltmeter I am testing, it is 6.80 volts!! Is the psu broken? Is there any solution for it? I also tested all ...
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How do I get correct a correct pwr_ok signal to use a non-ATX power supply in a PC?
I have an old Power Mac G5 power supply from 2003. It's an excellent quality high-power unit which I'd hate to have to throw out. The problem is that it's 100% proprietary.
All voltages are the same ...
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ATX power supply's "Power Good" measurement using oscilloscope
I want to measure the power good time of ATX PSU using an oscilloscope.
As far as I know, normal time for power good is between 100ms to 500ms. and it is measured according to the picture below, ...
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Latch circuit to cycle power in an ATX PSU
I'm designing a system powered by an ATX PSU. I'd like it to be able to be switched on and off by a momentary switch but also to be able to be turned off by another input.
The latch circuit is powered ...
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ATX PSU standby section starting problem
I am having a problem in a ATX supply.
The problem is when I plug PSU to 230 V AC the PSU won't start thus I opened and tested 5vSB not present on wire and also not on diode (IN5822).
Thus started ...
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ATX Computer Power Supply Spark in Non-computer Application [closed]
I would like to ask for your assistance with using a Silverstone DA1650 Gold computer power supply (you can find more about it here: Silverstone DA1650 Gold) for a non-computer application. In this ...
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How to find minimum load for 5V rail of the power supply? [closed]
I have 450 ATX 12V V 2.2 power supply. I am going to use this power supply as my power bench supply. But I couldn't find the minimum load that takes on 5V rail. Beacuse its pretty old PSU and no ...
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Maximum Power Draw Through ATX 24-Pin Connector
I'm currently designing a PCB to adapt a proprietary Dell redundant power supply to have ATX pinouts. It's a redundant PSU from a PowerEdge Tower, and while it has an ATX 24-pin connector to the ...
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Using a PCIe 6/8-pin connector on a modular PSU to power on a car head unit temporarily
I would like to temporarily wire up a standard 650W ATX to power on a car head unit to check if it is working for about 30 mins. Based the pinout below, do I hook up pins 1 and 4 (or 1 and 5) only?
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Is it possible to use capacitors or diodes to safely connect two ATX PSUs in parallel for more power? [duplicate]
My school is throwing away some old PCs which are all nearly identical. They happily allowed me to get my hands on a couple of parts including the ATX power supply below. As I see from the spec ...
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Is there a safe way to get 12 V power from an ATX power supply when the computer is turned off?
I have some LED stripes to illuminate my workspace. Since I have nothing else at hand, I connected it to the 12V rail of my PSU in my computer. This works very well when the computer is turned on, but ...
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Speaker amplifier on ATX PSU is noisy when PC's 3.5mm jack is plugged in
I'm running a small class D speaker amplifier directly on my PC's ATX 12v rail (like this), so that it switches on when my PC turns on. This works great when I play music on it from my phone, but when ...
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Can an INA3221 current sense module be used to read the current in a ATX 12/5/3.3 V computer power supply accurately?
Can an INA3221 module (Triple-Channel, High-Side Measurement, Shunt and Bus Voltage Monitor with I2C- and SMBUS-Compatible Interface) be used to read the current in a ATX 12/5/3.3 V computer power ...
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Converting ATX into lab supply trouble
I have been trying to convert an ATX power supply into a lab power supply and ran into some problems.
The first one was that the banana plugs I bought had metal nuts and screws, so I used electrical ...
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Will a 10 Ω resistor create 2.5 W of dummy load on 5 V line (using an old ATX PSU)?
I am trying to understand something about dummy load resistors.
I have an old ATX PSU. It has a 5 V line; maximum is 34 A, but it says it needs a minimum of 0.5 A. That means it needs a minimum load ...
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