Questions tagged [voltage]

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.

Filter by
Sorted by
Tagged with
0
votes
2answers
32 views

can i power a device with more output amperage than the device needs? [closed]

I just brought a speaker that runs on 12v power supply. So i want use it on my car. Can i power a speaker with a car battery 12v directly? Speaker input: 12V, 1.25A Car battery output: 12V
0
votes
0answers
16 views

Ideal Voltages for overlock

I let the 5-way optimization overclock my CPU and fan curve in AI Suite III and i know its usually frowned upon to use a program to overclock but after the program is done. I just wonder if someone ...
0
votes
1answer
60 views

How to detect what wattage that my Windows laptop is receiving via USB-PD?

I don't know too much about USB-PD. I understood that USB-PD requires negotiation between the charger and the receiver. So probably my Windows laptop (Dell XPS 9570) should be able to know the current ...
0
votes
0answers
24 views

Is it safe to use non-genuine laptop's battery

I own an Hp pro-book 430 G2 Laptop, While I found batteries compatible with this model they weren't exactly the same. My battery is RA04XL while What I found has RA04 written on it. Both batteries Li-...
0
votes
0answers
26 views

Is it safe to use a different battery

my new battery just arrived, it’s an 44 Wh battery, 2850 mAh while my old one is 40 Wh, 2550 mAh. Is it safe to use it? (Both are 14.8 v) Also, when I installed it I smelled a burn inside my laptop ...
2
votes
2answers
59 views

Why does RDIMM-type memory require less voltage from the CPU?

I have read the following: https://www.anandtech.com/show/6068/lrdimms-rdimms-supermicros-latest-twin/2 https://en.wikipedia.org/wiki/Registered_memory https://www.pcmag.com/encyclopedia/term/62658/...
0
votes
1answer
88 views

Inverter Voltage Output Measurement

I have an old notebook which the backlight is not working. In order to know the reason why, it would be interesting to measure the output voltage 'Vout' from the inverter. Unfortunately, there are ...
0
votes
1answer
93 views

Using slightly different voltage battery for my laptop

I’ve an acer laptop (Acer aspire e15) and it’s battery was blown up and doesn’t work anymore. So I ordered a new battery off amazon with correct voltage which was 11.1V as it was written on the ...
0
votes
2answers
51 views

Can I use different laptop charger- similar Voltage, higher Ampere? [duplicate]

My original laptop charger was output 20V 3.25A. Now I have a charger with output 20V 6.75A. Can I use it? (The real data: Can I charge Lenovo Yoga 11s with Lenovo IdeaPad 15?)
0
votes
0answers
73 views

Using a step-up converter with PC's PSU to power monitor

Is it a bad idea to use a Pololu U3V70A to step up one of my spare 12v cpu/pci-e connectors on my PC's PSU? The monitor I want to power requires up to 19v/5.79a.
3
votes
0answers
68 views

PSU voltage and microfreezes

A week ago, my PC started exhibiting a problem. When scrolling in a web browser or trying to game, microfreezes happen randomly. The PSU is five years old, and some of the voltages look out-of-spec, ...
2
votes
1answer
84 views

Does Silicon Lottery apply to individual CPU cores/threads compared to the others?

Can individual CPU cores or threads clock faster than the others due to Silicon Lottery? Is it then reasonable that the rest of the cores are held back by the slower one as they need to match it's ...
0
votes
1answer
49 views

Dell xps 9350 battery voltage issue

I have Dell XPS 9350 model which has battery issue. So I brought another new battery which is not original yet good one. Now my question is My original battery has 7.6v but the other battery which I ...
0
votes
1answer
60 views

Using two different chargers for the same laptop

I have laptop HP 650 G1 It came with charger with specs: INPUT 240V - 1.6A 50-60 HZ OUTPUT 19.5 V-3.33 A So I want to know is it safe to charge laptop with another charger (same connector, also from ...
17
votes
3answers
7k views

I am in a EU country where it says on the socket 16 A / 250 volt. Can I charge my laptop which takes 100-240 volt / ~1 A?

My laptop started turning off randomly and I thought maybe it's because of this socket.
0
votes
1answer
253 views

Can i use a universal laptop charger for +10.8v 4400mah, 47wh [duplicate]

I have a universal laptop adapter with listed voltage that i can set 12v/15v/16/18/19/20/24v.. i want to try it on my asus laptop with battery rating of +10.8v 4400mah, 27wh.. it's an li-ion battery. ...
0
votes
0answers
33 views

Abnormal voltage range and frequency activity on Intel 8550U

I have recently purchased a secondhand/refurbished HP laptop with i7-8550U CPU and MX 150 GPU. The first thing I noticed is that it runs unreasonably slow on games, much slower than my other i7-8550U +...
0
votes
1answer
391 views

Using 3.5“ internal HDD connector for a internal 2.5” HDD

I had a 3.5 inch internal HDD, and to connect it externally, I bought a 3.5 inch connector (as 3.5" HDD requires 12V power), which had a chip and external power adaptor - as 3.5 inch HDD can't run in ...
0
votes
1answer
62 views

Powering a Acer netbook using a Lipo battery

Is it possible to power a 10.9v rated Acer Aspire notebook using a 10.9v/3300mah Lipo battery pack via charger port? Charger seems to be 19v. Does Notebook really need 19v to work? I want to use the ...
0
votes
0answers
99 views

Thermistor to Celsius/Fahrenheit/Kelvin in MATLAB

Thermistor to a Temperature Unit in MATLAB I am using an Analog Read Pin on an Arduino Uno to read the temperature as given by a thermistor. The resistor being used on the thermistor is 220𝝮. What I ...
0
votes
1answer
340 views

Choosing the right stabilizer / Voltage Regulator for Laptop Charge carts (40 capacity)

A client has a laptop charge cart rated input @ 125VAC & output also @ 125VAC. Total 1875 Watts. specs: http://www.v7world.com/us/products/charge-carts/charge-cart-30-devices.html#horizontalTab5 ...
0
votes
0answers
36 views

What do I need (powerwise) to plug my French gamer PC in Canada

I read on metastack that superuser is the place to ask hardware related stuff, hope it fits. I recently move from France to Canada and I'm going to get my gamer PC shipped soon. What will I need to ...
-2
votes
2answers
261 views

RAM upgrading tips

I am going to increase RAM size by add another DIMM in the 2nd slot of my motherboard. My concern is how to buy RAM online with exact voltage, speed, single or dual channel. Will my mother board ...
0
votes
1answer
23 views

USB type C power

I use a USB cable (normal type A male on one end) and type C on the other. I connect the C end to my Samsung tablet and the other end into my DJI Mavic drone remote controller. The connection works, ...
0
votes
2answers
2k views

Okay to supply more amps? Use a 14V 4A 56W power adapter on a 14V 3.21A (45W) monitor?

I have a Samsung 4K monitor, LU28E510DS/ZA (Costco exclusive variant), with a back panel describing DC14V 3.21A. I cannot find an exact replacement power supply. I found one that is close at 14V 3A ...
1
vote
1answer
6k views

Lenovo Trim Yellow rectangular power adapter

Need Lenovo Yellow Power adapter connector information, its a MYSTERY to me!! Options ‎ Hello all, I recently just purchased my first Lenovo products with the new Yellow rectangular power adapter. ...
0
votes
0answers
374 views

MOV absent, surge protector necessary?

Everyone is welcome, hardware experts are preferred in this regard: MOV (Metal oxide varistor) is not present in PSU (Corsair CS850m), is there a need for surge protector? It says over-voltage, over-...
1
vote
0answers
244 views

Laptop charger voltage

I bought a laptop from the US. Now the part that connects from the power brick to the wall socket says 7A 125V. Unfortunately, the end that goes into the wall socket does not fit. So I replaced the ...
0
votes
0answers
59 views

Laptop Adapter Voltage Measures Lower than Listing

A standard laptop PSU has a listed voltage of 18.5 Vdc. During a heat rate testing of the PSU, the output voltage was measured at only 15.1 Vdc, however, the laptop itself had a known system fault; ...
6
votes
1answer
15k 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 ...
2
votes
1answer
379 views

Increase voltage on PCI serial port

I have many serial based cash drawers. An issue that I continually face with them is firing the latch strongly enough to open the drawer. I believe there is a capacitor that must be charged and if the ...
1
vote
2answers
4k views

What are the dangers of high CPU voltage?

I have a i7 6700k Skylake and I have her overclocked at 4.7GHz with 1.7V. I've seen people saying that you should be wary of putting the voltage over 1.5V, but they all seem to be related to core ...
0
votes
2answers
12k views

How do I check the mAh or Voltage for my laptop battery?

I was wondering if there's an easy way I could find out the mAh for my laptop battery, It's a Lenovo Yoga 12 and it states on the manufacturers website that the battery is a Li-Polymer 8-cell 47Wh but ...
0
votes
2answers
3k views

Why do you have to use a voltage divider with HC-05 bluetooth module? (Arduino) [closed]

I am trying to connect my bluetooth module to my Arduino but it takes 3.3 volts (the bluetooth module HC-05, The Arduino mega takes 5v) and the tutorials online say to connect the RX pin to the Ground ...
0
votes
0answers
275 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
3answers
275 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 ...
-1
votes
1answer
418 views

Laptop Battery: Can High Voltage Damage?

I am looking to buy a new battery for my Toshiba Satellite L10 But I have a problem. On the website, it says only compatible with 14.4 /14.8 volts, but my computer is 19 volt. Does this matter? Will ...
0
votes
1answer
1k views

How to increase laptop/notebook USB voltage?

USB ports typically provide anywhere between 5-6V. If a laptop/notebook USB port is only producing between 4-5V; What can be done to fix (i.e. boost/increase) the output voltage?
0
votes
3answers
406 views

Are Kingston DDR3 1333mhz and Crucial DDR3 1600mhz 2GB RAM sticks compatible?

I have 2 crucial sticks in my ASUS P8Z68-V LX atm. I'd like to go to 8GB and wanted to know if the lower voltage Kingston sticks would be compatible? Also I feel I should point out the Kingston RAM ...
0
votes
0answers
24 views

lenovo laptop battery compatability

i have a "LenovoZ510" laptop with battery of "15 v" and "15.0 V" , "3200mAh" , "48Wh" ,but its not working properly, so i have purchased a battery from seller,while purchasing he told me that it ...
0
votes
0answers
724 views

Asus M32 desktop motherboard will not power on. Unknown purpose of its “VRM_BOOT” pins

My Asus M32 desktop will not power on after a power outage. The CPU fan does not spin and there is no video output when the power button is pressed. I've used 4 different power supplies to try to get ...
0
votes
1answer
53 views

Right Voltage, still not charging

My charger died a bit ago and even after ordering a new one with the exact same Voltage (19.5v) and Amps (4.62a), the laptop does not charge. Is there something that needs troubleshooting, or has ...
0
votes
1answer
154 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 ...
0
votes
1answer
2k views

Is it bad to put 3.7V on 3V mice?

I have mouse that take two AAA batteris, so it take 3V. Is it OK put one 10440 of 3.7V and one spacer instead?
0
votes
1answer
1k 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 ...
2
votes
1answer
1k 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 ...
1
vote
1answer
170 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 ...
0
votes
1answer
369 views

Voltage Nominal range vs Maximal range

I have a printer , that has this specification about operating voltage : Nominal Voltage Range : 100-250 VAC Maximal Voltage Range : 90-264 VAC. I need to know the difference between Nominal and ...
1
vote
1answer
819 views

GPU Voltage lowers after a few seconds of load?

I have a 650Ti, and I'm looking to overclock it. I'm using MSI Afterburner, and while I'm stress-testing etc. I have the logging graphs open. Under max load, with no overvolting, the default voltage ...
0
votes
1answer
3k 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 ...