Voltage is the measure of electrical current. This tag should only be used when asking questions related to powering computers and peripheral equipment. It is not for asking about voltage issues related to the commercial supply of power to your home or office.

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19 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 ...
0
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1answer
41 views

One laptop charger for laptop and monitor?

I have a monitor and a laptop and their chargers together are 91W. Both of them are 19V. So I was wondering whether I could just use a 90W charger and a cheap one male to two female 5.5x2.1mm splitter ...
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1answer
68 views

Do i need voltage stabilisers for Computers and other electronic devices without motor?

Searching on internet i've found this article https://www.bijlibachao.com/appliances/voltage-stabilizer-for-television-refrigerator-air-conditioner.html Where i've read that electronic devices and ...
2
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0answers
123 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 ...
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0answers
36 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 ...
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0answers
22 views

New 52Wh battery on Samsung NP540U3C

My battery on my 2.5 year old Samsung NP540U3C laptop is dying and I need a new one. I have been searching through the web trying to find an original one. And in order to find the excact one, I have ...
1
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0answers
31 views

TV connected to PC goes black for a second on its own or when turning a light switch on/off [closed]

I already read a few questions around here about this issue and while some of them provide a good clues, I think mine is specific enough to deserve its own question. The problem: TV image goes black ...
3
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1answer
64 views

Are all DDR3L (1.35V) DIMMS safe to use in a computer system that uses DDR3 (1.5V) DIMMs?

The sales support of (the consumer/prosumer sales subsidiary of) a DRAM manufacturer answered a pre-sales question I made with (translated from an email in French): 1.35V Memory DIMMs are dual ...
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1answer
21 views

Laptop quit charging, needs new charger but which one?

I have an HP Pavilion g6-2211nr I got it about 2 years ago. This last couple of months i havent been able to use it because It stopped charging. For a while It would if i held the cable a certain way ...
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4answers
330 views

Got shocked by a native dell laptop charger outputting 19.5 V 6.5 A DC. It was REALLY uncomfortable, but was that dangerous?

Okay. My laptop was running out of battery. I grabbed my charger (outputting 19.5 V 6.5 A DC) which was plugged into the wall, and as I touched the end of the charger I got some electric shock going ...
2
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1answer
85 views

Using RAM stick with different voltage?

I would like to upgrade the RAM of my laptop. its a Toshiba Satellite L850 - 13D, Windows 10 , 64 bits, it has 2 slots for RAM, the one I have is 4gb, I don't know if I can add another one, but ...
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3answers
52 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)?
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1answer
46 views

Are CPU voltage and RAM voltage related? What are the mutual constraints?

I was wondering if the maximum value of my CPU voltage range is a constraint on my RAM voltage. An example: My VID Voltage Range is 0.60V-1.35V and my memory modules are to operate at 1.5V. Am I in ...
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2answers
55 views

Charge a laptop with lower voltage

I want to charge my laptop using a 19V connector from a turtlebot. It has a special "Laptop charging connector" that delivers 2 Amps at 19 Volt (I measured 18 Volts though). I have a Lenovo that ...
1
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0answers
75 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 ...
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1answer
94 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
vote
1answer
64 views

Does Laptop power supply matter? [duplicate]

I have a power supply which is 19.5V and 6.15A. My friends power supply or laptop probably broke and his power supply has a 19V and 6.32A. His charger comes with an adapter which fits my plug ...
1
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0answers
34 views

Can I reduce the consumption of a Peltier cell by lowing down its voltage? [closed]

I have recently bought a Peltier cell: a small board that cools any device, like a CPU or a GPU. I have tested it and it works fine, but its power consumption is too high, due to its intake of 12 ...
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2answers
212 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? ...
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2answers
176 views

PC monitor adapter amperage/voltage

I am new here. I just got a PC monitor with an adapter that doesn't belong to it. The monitor requires a 19V 2.6A power source but the one I was given is 15V and 5A. It works just fine, but I would ...
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0answers
58 views

my usb dissconect for 1 sec from laptop duting a voltage fluctuation

i live in india where there are 1 voltage fluctuation per minute. when my laptop is connected to ac and then a fluctuation occur my usb device disconnect , it works fine when my laptop is on battery ...
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1answer
61 views

Is 208V 3phase enough to supply a 220-240V UPS?

Our input voltage is 208V 3-phase but we are not certain if it's capable of powering a 220-240V APC UPS. Can this power supply be used with this input voltage?
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1answer
45 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 ...
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2answers
641 views

Mouse rating 1.5V | Can I use a 1.2V rechargeable battery safely?

My mouse rating is 1.5V, I've been using it with alkaline AAA batteries which provide 1.5V. My question is, if I have a 1.2V rechargeable battery, is it going to work anyways without issues? I'm just ...
2
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1answer
871 views

Can low voltage damage laptop or it's battery?

Sometimes I get very low voltage in my house. I am worried if I connect my laptop charger to the socket, will it damage the charger, battery or the laptop itself?
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1answer
41 views

Power Adaptor Compatibility [duplicate]

my Sony Vaio Power Adaptor broke today and i wondering if i could replace the broken one with the Adaptor from my older Vaio, here are the specs : Broken Adaptor : VGP-AC19V54 Old Adaptor : ...
0
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2answers
41 views

Using RCA to read voltage [closed]

I've connected an RCA cable to a device to read an analog voltage signal that's +/- 2.5V from what I can tell. The problem is that I need to somehow connect the other male RCA end with the computer in ...
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0answers
62 views

Computer slow after plugged into wrong voltage

So I set up a desktop computer running ubuntu in a classroom that was running through an AVR at 220 volts. I got a report that it wasn't working, so I came to look at it, and sure enough, fans and ...
-1
votes
1answer
89 views

How do I evaluate which RAM to buy as an upgrade?

Hello i have 2x4GB ddr3 rams operating at 1.35v here you can see http://gyazo.com/b7ce756c365d94e871aa7753f2c89319 im getting 2x4gb dd3 new ones ...
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2answers
372 views

In trying to fix my laptop power adapter, current is going through the wire but the laptop will not charge?

My laptop power adapter has recently stopped working (will no longer charge my laptop), and I would prefer to fix it if possible, instead of putting a couple hundred bucks into a new one. I used a ...
0
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1answer
601 views

connecting two 3.7v battery's to tablet, in parallel for extend the working capa

my tablet have 2500mah battery. it works for four hour. but I want to extend the source power. so I want to connect another same voltage battery to tablet. battery was 1500mah. can i make connection ...
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3answers
1k views

What happens if I put an 1.5V ram stick in a 1.65V rated Motherboardslot?

I'm going to bulid my new gaming rig pretty soon. I allready got my DDR3 Ram sticks(KVR16N11K2/16 by Kingston). Is it possible to put those in a Motherboard which has 1.65V Rated RAM-Slots(the ...
0
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1answer
575 views

Can I put two kingston value ram of different nominal voltages?

My MacBook Pro Mid 2010 has two ddr3 so-dimm ram slots capable of hosting totally 8gb. I already have one kingston value ram module 1066 Hz 4gb and I want to buy another 4gb module. There is the ...
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1answer
979 views

I have a 3.3 Volt PCI ethernet card working on a 5 Volt PCI slot. How is it possible?

This is the design for PCI slots: As you can see, there are 32/64 bits and 3.3/5 Volts. For what I know: 32 bits PCI cards can work in 64 bits slots of the same voltage. 64 bits PCI cards ...
3
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1answer
198 views

Ever have bad voltage on an ethernet jack on a router/switch?

So I've got a bit of an odd problem I'm trying to solve. I have an ASUS RT-N66U router which has a desktop, xbox, and my brand new NAS directly wired into it. Whenever I hook the brand new NAS up ...
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0answers
138 views

Should you worry about high voltage and wattage on a non-overclocked computer?

I've been wondering if I should be worried at all about high wattage or voltage on a non-overclocked computer. I say non-overclocked because when I Google search this question or something similar it ...
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3answers
676 views

What do OUTPUT charts of PC Power Supplies mean?

I'm looking at various power supplies and they all come with different output cables. They also have different OUTPUT charts, for example: What I'm wondering: What are these output columns are ...
2
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1answer
1k views

Different RAM voltage

on my PC I have 2 kingston RAMs. The only difference is that one runs at 1,35V, the other at 1,5. As you can see frequency, latency and others doesn't change. My motherboard is an Asus ...
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2answers
1k views

Can Current Backflow from Powered Hub's Adapter & cause PC Damage?

Getting this short: Can current flow from a powered USB hub's power adapter (lying 10 Meter away) back to computer via usb port and cause damage to Computer components like mobo, etc? What should be ...
0
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1answer
319 views

How can a power supply rated 7A be strong enough for two devices rated 5A? [closed]

I am not understanding something fundamental to amperage: Consider this adapter which outputs 12V 7A. It claims that several (eight, in this case) devices running at 12V 5A can draw enough power from ...
0
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1answer
602 views

How to overclock CPU using only FSB?

According to my BIOS the CPU temperature and the system temperature are 16°C and 18°C respectively for Idle on stock air cooling. (It used to be 40°C and 48°C when I kept my computer inside a case. ...
1
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1answer
245 views

CPU voltage settings set in BIOS always stay the default

Default voltage is 1.5v.It can be set to the highest setting (1.55) or even to 0.8v but the voltage always is 1.5v. How to make it 1.55v? Can I somehow make it higher than listed there (like 1.6v) ...
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1answer
82 views

Are Samsung Series 9 ultrabooks (purchased in the US) compatible with 240V/50Hz power input?

I'm traveling and I'm curious if I can use an adapter. I have a replacement power chord and it states that it can take in 100V-240V, 50-60Hz, but I want to make sure that the ultrabook itself accepts ...
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0answers
412 views

Observing Output Current/Voltage from USB Port

I am working on a project where i am required to observe the current draw from a circuit. In a lab, I have access to power supply/multimeter and can easily check how much current is being drawn from ...
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0answers
109 views

probe processor voltage in linux

I am in a redhat server I've tried to use lm-sensors to detect my processor's voltage, just like CPU-Z in windows environment. But after I using the command "sensor-detect", only processor's ...
2
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2answers
240 views

Turning on lamp pauses sound in my headset

I have my headset connected to my PC with USB. When I turn on my lamp on my table (fluorescent) the music from my headset pauses for about a second while the lamp powers up. Then it's back to normal. ...
0
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1answer
126 views

No display Asus x44h

My laptop is an Asus model x44h. Last night due to high voltages, my charger and laptop were damaged. Now my laptop display shows nothing but I can still hear the login sound. Can anybody help me ...
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0answers
1k views

Acer aspire battey pin diagram

I have an Acer Aspire laptop and it has a 6 cell Ar4920LR laptop battery, I need to figure out what two pins are used for charging the laptop battery. Can anyone take the battery out of anyone and ...
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2answers
632 views

PSU blue wire reads strange voltage

I was testing my PSU with paperclip method and checking the voltage of every wire just to be sure it is 100% functioning. What surprised me was that every wire was working just fine but one, the blue ...
0
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1answer
79 views

Hi I would like to know if modules (2gb each) of G Skill F3-12800CL7 are compatible with Intel® NUC Kit D34010WYK

I would like to know if modules (2gb each) of G Skill F3-12800CL7 are compatible with Intel NUC Kit D34010WYK. That because of the voltage: the NUC does not support 1,5 V but only 1,35 V. I would ...