All Questions
Tagged with power-supply voltage
58
questions
7
votes
1
answer
29k
views
USB-C Chargers: Is it safe to charge a phone with a laptop's power supply?
I have an HP Chromebook and a Nexus 6P smartphone, and both of them use USB-C connections for charging. When I plug the Chromebook into the Nexus's charging cable, it works fine and I just get a ...
- 417
0
votes
0
answers
280
views
Console powers off and powers on in quick succession. Insufficient current? Voltage drop?
I have a question about a specific setup I have.
I have a Nintendo Classic Mini console, this console:
requires 5V/1A through its USB 2.0 micro-B female connector to power the console
outputs ...
0
votes
3
answers
1k
views
Safe to use a 19V 2.15A DC adapter (a laptop charger) for an accessory that uses a 25V 0.75A DC adapter?
I picked up a USB steering wheel at a thrift store and it requires a power supply to 'nudge' the wheel back into place (if you let go of it, for example). It requires 25 Volts, 0.75A, yet the closest ...
- 103
0
votes
1
answer
331
views
checking desktop power supply voltage range.
I have a few computers. I know some of the power supply is 110-220 and some are only 220. I need to figure out which ones are which. How do I do that? I can't seem to find it in the control panel. Is ...
- 31
0
votes
1
answer
3k
views
3.3v rail randomly going low after a period of use
I am having a recent problem with my PC.
After a "random" amount of 100% stable running time (anything between 1 - 12 hours), the 3.3v rail will suddenly start dropping step-by-step from 3.36v to ...
- 111
2
votes
1
answer
4k
views
Motherboard is showing 24v instead of 12v
I have put together a new PC build and when I turn on the machine it's showing me the following error/warning:
"Asus anti-surge was triggered to protect system from unstable power supply"
Besides ...
- 123
1
vote
1
answer
386
views
Laptop Power Supply Modification
I have an old laptop which I no longer have the charger for. I ordered a new charger for the same laptop series, but the plug is too large, and it is unlikely that I will find the same adapter (Acer ...
- 1,613
0
votes
1
answer
4k
views
Need some explanation about PC and AVR (Automatic Voltage Regulator) [closed]
I have an AVR and my PC plugged into. I Live in Europe and the voltage in the mains is +-240V.
The AVR has a LCD display showing the current input (mains) is 237 and the output voltage 210-217V. My ...
- 3
9
votes
2
answers
5k
views
Under what conditions will a group-regulated PSU damage a modern computer?
These days, group-regulated power supply design is considered obsolete and is ideally avoided—primarily due to the poor regulation under crossload. For example, Shilka pulls no punches here, and while ...
- 3,024
0
votes
0
answers
1k
views
Power adaptor seems to be outputting too high a voltage
I'm in a country with an unreliable national electricity supply, where staff in the compound in which I live run a generator at certain hours if there's no national power.
Recently, the generator ...
- 5,396
7
votes
4
answers
10k
views
Can computer power supplies use North American 240V (hot-hot-ground)?
Simple question: Most computer power supplies are auto-sensing between 110V/120V and 220V/240V. This begs the question, can they use 240V in North America i.e. connected to both hots (red and black)?
- 198
1
vote
0
answers
2k
views
5v rails is getting 5.7v even with new PSU
I need help. I'm on my mobile typing this so i'll be word efficient. (English is not my native language and I only have a basic understanding of pc's)
What's the problem?
After the weekend I tried ...
- 11
-2
votes
1
answer
708
views
Will an external battery power bank power an mini-ITX board (~200W)?
I was planning to build a laptop from scratch, and I've found some good DC-DC converters that allow you to use an external power source to power a standard desktop board (in this case a mini-ITX). The ...
- 1
1
vote
2
answers
7k
views
Does a PCIe 8pin power cable use just one 12V rail.
Looking at a diagram below of a PCIe power supply connector it shows it has 3 12V pins. When it's plugged into the PSU how many 12V rails does it use?
I assume it is just one, but how does that work? ...
- 870
2
votes
1
answer
632
views
wireless router power adapter replacement 0.5a vs 0.6a
i have a wireless router with no power adapter, it needs a 9 volts 0.6 amperes adapter but i only have 9 volts 0.5 amperes power adapter.
Will 9 volts 0.5 amperes power adapter damage my wireless ...
- 23