All Questions
Tagged with atx power-supply
119
questions
-2
votes
1
answer
60
views
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 ...
0
votes
1
answer
79
views
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 ...
1
vote
2
answers
298
views
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, ...
- 135
1
vote
1
answer
389
views
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 ...
0
votes
2
answers
101
views
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 ...
- 55
1
vote
1
answer
274
views
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 ...
0
votes
0
answers
691
views
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 ...
3
votes
2
answers
339
views
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?
- 31
0
votes
0
answers
56
views
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 ...
- 51
0
votes
1
answer
78
views
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 ...
1
vote
0
answers
183
views
Detect if PC power is on/off then turn a TV on/off using an Arduino
I'm building an arcade cabinet using an old PC and an old(ish) Bush LCD TV as the monitor. The TV is connected to the PC graphics card via HDMI and all is good. However, the problem is that I want the ...
- 73
0
votes
0
answers
281
views
ATX PSU load sharing and failover design
I'm trying to arrive at a solution for lower cost ATX power supply which will supply about 250W, has two separate inputs each capable of supplying the full load in case of failure/disconnection but ...
- 273
-1
votes
1
answer
690
views
Is it safe to keep PS_ON grounded?
I want to disable the 'soft power off' feature of an ATX power supply. So I think of connecting PS_ON and GND with a tweezer and keep it. But when the motherboard wants to shut down and sends high ...
- 101
1
vote
2
answers
999
views
Connecting PSUs in parallel
It's certainly have been asked here but answers seems mixed. So for my project I need to power an ATX motherboard with extra 3.3V rail (there's a separate connector on MB for this). I will be using ...
- 275
0
votes
0
answers
35
views
Power switch for 8Pin ATX Connectors
What would be the best way to make a power switch for the 8-pin ATX Power Connectors? Can I just join all the yellow (12V) wires together and then use a high current switch to toggle them ON/OFF? Also ...
