The electricity tag has no wiki summary.
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1answer
25 views
how to automate pc shutdown & power off?
How could I automate the nightly shutdown and power off of my computer at the mains. That is aiming to use zero electricity during the night.
Requirements
Can configure time you want shutdown ...
0
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0answers
12 views
What size UPS do I need? [duplicate]
Trying to figure out what size Uninterrupted Power Supply (UPS) I need to keep my machine on in the event of a power outage (or on long enough to save what I'm doing before shutting down).
Needs to ...
0
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0answers
29 views
How to calcuate amount of electricity required for cooling x watts of equipment in DC?
I have a rack which totals 8000 watts, now based upon this number I want to calculate the amount of electricity that goes into cooling the heat dissipated from this rack?
Is there any calculation, I ...
0
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1answer
53 views
How to calculate total / max electricity consumpton for a server / or hardware equipment.?
Consider I have in the cisco 2911-sec/k9 data sheet with following power values
Maximum Power with AC Power Supply (Watts) 210
With this given value how can one calculate total electricity ...
1
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2answers
53 views
600W vs 1200W PSU in terms of noise? [closed]
I've been wondering, if my system draws about 400W at peak, which PSU would be quieter? assuming both are from the same manufacturer using the same type of fan and cooling mechanism? My theory was the ...
-2
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1answer
58 views
Grounding and why charge leakage occurs [closed]
A tiny nugget of info is missing in my end-to-end picture of how grounding works and why it's important. When a voltage is applied in a circuit the electric current starts flowing (or the field ...
-2
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1answer
30 views
Maximum number of sockets in an extension lead [closed]
In a UK extension lead, what are the maximum number of sockets that you can get?
2
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1answer
72 views
Static electricity or PSU
I have a Desktop tower, 2 Monitors, a printer, a router and a set of speakers hooked up to a power strip.
The powerstrip is connected to a wall outlet (3 pin).
Everyday I switch off the powerstrip in ...
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0answers
15 views
How to protect my laptop from power surges while travelling abroad? [duplicate]
Possible Duplicate:
How do I protect my laptop from power surges?
Most of the outlets in south east Asia are non-grounded. Additionally the electrical wiring and power grid standards here ...
2
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4answers
127 views
Are there any computers that could fit inside a standard North American power outlet box?
I would like to be able to put a computer in the wall. With decent-performing boards as small as the Raspberry Pi, has anyone ever attempted to put one inside of a power box? If so, which ones and how ...
0
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1answer
162 views
Does the retina MacBook Pro Australian charger duckhead have 3 prongs on it or 2?
I notice that with my Retina MacBook Pro (bought in UK), its charger uses all three prongs to power the laptop (like this, rather than this). Not surprised, it's a powerful machine.
I'm going to ...
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0answers
87 views
How do Sine Waves affect PC Hardware?
I wanted to buy a UPS for my PC. I was going over some and I came across a variety of sine waves that different UPSes generate.
Stepped Sine Wave
Modified Sine Wave
Simulated Sine Wave
I know ...
0
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1answer
63 views
Ups Unknown Back-Up Issues
I have a Powercom UPS IND606A. I am staying in india having voltage range of 230.
The detail explanation of problem :* When there is a powercut UPS gives back-up but it restarts the computer. ...
1
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1answer
109 views
Using Power Supply with less ampere for Laptop [duplicate]
Possible Duplicate:
Laptop power supplies, does current matter?
My laptop Charger is 19.0v and 6.5A, it was broke yesterday , i tried to find a replacement but couldn't so i got another one ...
1
vote
1answer
175 views
What are the costs and benefits of using 12V-only motherboards? [closed]
According to my research, it sounds as though power efficiency concerns in recent years have driven some hardware manufacturers to create different power supplies and motherboards which are ...
1
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0answers
73 views
I unplugged the monitor power cord and monitor SVGA cable [closed]
I unplugged the monitor power cord and monitor SVGA cable to connect to another PC. After I went back to connect the power cord on my previous computer with SVGA cable again. But the PC is loading ...
1
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0answers
276 views
Possible to bypass laptop inverter power source - HP dv5000 inverter 7 input pins?
I've got an HP dv5000 laptop with a backlight that won't light up, (but is known to be good). I've also got an inverter board which is good, but isn't getting power from the mobo. So, my question ...
3
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1answer
158 views
Weird things happen to my PC when light switch is turned off
I have been experiencing some strange behaviour on my computer. It happens at times when the kitchen light switch is turned off although my computer is in the study room. If I am surfing the web, the ...
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2answers
334 views
Does a chassis fan DC12V 0.18a have higher RPM than one with DC12V 0.16a?
I am going to purchase a few chassis fans (12cm) for my computer and the salesperson told me that a fan with DC12V 0.18a has higher RPM than one with DC12v 0.16a.
I don't know anything about ...
0
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1answer
297 views
I want to use one charger for two devices: Which one should I choose?
I have one Acer tablet with the following specs written on the charger:
Output: 19V 2.15A
Then, I have an Acer netbook (Aspire One) with the following specs on the charger:
Output: 19V 1.58A ...
0
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3answers
813 views
Can a usb cable carry 12v?
Here's what i'm wanting to do.
I have a Acer Iconia A500 tablet.
I want to plug it in, in the car, but it has a barrel plug and I don't want to buy an inverter. The car adapters are expensive for ...
0
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1answer
880 views
Does intensively running a gaming-laptop increase electrical costs significantly? [closed]
Our electric bill has been high lately, and I was wondering if it is related to my new gaming laptop I bought. I have an MSI GT780DX. It has a huge power brick AC charging adapter, and I leave it ...
1
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3answers
756 views
Will turning off cores in an i7 save any energy?
I've got a Core i7 @ 950. Which eats a bit too much, and I would like to get the lowest consumption possible. If I turn off some of the cores. Will that save me some energy (in idle)?
0
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1answer
239 views
Charter internet weird experience with intermittent signal
We've had Charter communications for about 6 years. The last 2 we've used a D-link dir-655 router with their modem and my wireless router served access to a 23 room house without issue for those 2 ...
0
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2answers
929 views
What's the polarity of an ACER Aspire Notebook charger?
I can't find any information regarding the polarity of an ACER Aspire Notebook charger. I lost it, I have all kind of chargers but I need to know the polarity of the original charger.
I am familiar ...
0
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1answer
694 views
Maximum power draw for dell switches and servers?
I'm getting ready to move some equipment to a data center and they are asking for a maximum power draw that my equipment would have so that they can install the appropriate circuit breakers for my ...
28
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6answers
3k views
Can touching any hardware inside a running PC be dangerous for you?
I'm curious, if all the hardware gets power from the PSU's DC power lines, which provide a max. voltage of 12V, can you get electrocuted by touching some of the hardware?
6
votes
3answers
1k views
Does a laptop recharger waste electricity when the laptop is not connected?
I have a laptop with a recharger (also known as an AC adapter), this is how it looks like:
When I disconnect my laptop from the charger, does it (the charger) still consume (waste) electricity?
...
1
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0answers
189 views
How To Measure Static Electricity Buildup In Body? [closed]
Is there a device that can measure static electricity buildup in my body? With this device i could know the risk of working with electronics beforehand and if i should discharge before starting to ...
4
votes
1answer
481 views
Electric shock with plugged in VGA cable [duplicate]
Possible Duplicate:
Why would I get an electric shock from a VGA cable connected to an LCD monitor?
Similar to this question I got shocked today with a new computer I just bought. How is ...
5
votes
2answers
339 views
Is it okay to use a UPS without a ground?
I have a UPS unit that I would like to use for a workstation installation that does not have a valid ground (in the Philippines, a true ground is a luxury).
I am not an Electrical Engineer, but I ...
2
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4answers
83 views
AC protection for laptop
I think there is something wrong at my apartment. Two weeks ago my girlfriend's AC adapter died... and yesterday mine.
Can I buy something to protect the AC adapters from ... whatever bad coming from ...
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4answers
1k views
Does my 1000 watt 80gold+ (90% efficient) PSU pull 1111 watts, 1000 watts, or 900 watts from my wall receptacle at 100% load?
Does my 1000 watt 80gold+ (90% efficient) PSU pull 1111 watts, 1000 watts, or 900 watts from my wall receptacle at 100% load?
When I plug my 200 watt video card into one of the PCIe power ...
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3answers
2k views
Is it OK to use 17“ Macbook Pro AC adapter on a 13” Macbook Pro?
17" Magsafe Adapter:
Input: 100-240V - 1.5A 50-60Hz
Output: 16.5-18.5V - - - 4.6A Max
13" Magsafe Adapter
Input: 100-240V - 1.5A 50-60Hz
Output: 16.5V - - - 3.65A
The Answer:
I am looking ...
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2answers
426 views
Do C13 male/female cables exist? Or do I even need them?
I am hoping to plug a few computers into this HP PDU soon.
I have aftermarket power supplies, all of which take c13 female connections apparently.
The PDU (from what I gather in the pdf) has 8 * c13 ...
4
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1answer
313 views
Do Any PDUs/Power Strips That Plug Into A 14-30 Receptacle Even Exist?
I am hoping to turn my laundry room into a mini data-center.
My dryer takes a 4 pronged, 120/240v NEMA 14-30 receptacle.
Most all PDUs seem to have NEMA L6-30 plugs (3 prongs, twist lock).
...
1
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2answers
188 views
What Sized Cables Are Most Commonly Used To Connect To PSUs?
Most all wall plugs in North America are type A or type B.
What type of cable end usually plugs into an aftermarket PSU?
I am pretty sure it is the C13 cable, but not many PSUs make this ...
3
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1answer
364 views
Can Electric Surge Go Through Modem And Fry Laptop?
I have cable internet connection and cable connects to modem. From modem there is a LAN cable connecting to my laptop. Can electric surge reach my laptop?
1
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0answers
616 views
Why touchpad glitches when Ethernet cable is connected?
I have two laptops (black and white) both connected to the same mains.
when I then with Ethernet cable and connect black laptop to AC adaptor, white laptops's touchpad starts glitching: can't ...
3
votes
1answer
411 views
Static electricity on my PC, and crash on USB key touch
My PC is a bit weird: Sometimes, I can switch it on just by touching the front side near the power button. Very fun in fact, I love it!
But sometimes, when I connect a USB key, the PC just crashes. ...
2
votes
1answer
333 views
brand new computer powers off after a few seconds
I bought a new computer and I'm almost ready to send it back to the shop. Here are the specs:
Motherboard: Asus Crossfair IV Formula
Processor: AMD Phenom II X6 1100T Black Edition
RAM: 4 x 4GB CL9 ...
1
vote
2answers
612 views
Which part of laptop is better to use for discharging static?
I don't like when static zaps me from keyboard or mouse or some random metallic part of casing, so I often touch some grounding before resuming working with the computer.
However, it often disrupts ...
2
votes
4answers
398 views
Is it dangerous for a note/netbook computer to be plugged directly to current?
I have an acer aspire one d255.
Would it be dangerous to use when plugged directly to current, without a voltage regulator. Also, is there a benefit in using the battery when plugged?
Let's consider ...
4
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4answers
1k views
Do I need an antistatic bag when mailing a CPU?
I am about to send a used CPU I sold on eBay to the buyer.
I do not have an anti-static bag handy, and they seem to be difficult to come by in shops, at least in my neighbourhood. I could place a ...
18
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6answers
17k views
How to discharge static electricity before opening a computer?
Before opening a computer, I often hear advice to touch something that is "grounded" - a computer case for example, or a heating element - to avoid damaging the sensitive electronic equipment through ...
4
votes
2answers
253 views
How much electricity is used?
In each of the following cases, please label the electricity used as (A) very little (less
than 1 dollar a month), (B) moderate (between 1 and 5 dollars a month), (C) high (between 5 and
10 dollars ...
3
votes
1answer
200 views
Does a power supply draw its rated watts all the time?
I'm really confused when it comes to power supplies. I'm looking at a 650 Watt, bronze rated power supply.
Does this mean that it is constantly drawing 650 Watts? Or is that how many it pulls in an ...
0
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2answers
311 views
Can the Internet use electric wires to transfer bits?
I think it would be easier if the information can be sent from a power socket. So the computer will have 2 cables connected to a socket: the energy supply and the internet.
1-----2-----3
AC socket
...
1
vote
1answer
87 views
Did high winds and a storm turn the power strips off in my house? [closed]
After a day of high winds and storms I found all the power strips in the house in the "off" position. The lights had flickered and power went on and off very breifly a few times during the storm. ...
10
votes
6answers
13k views
Does laptop charger wastes electric current when not connected to the laptop?
Wonder if when I leave it connected to the outlet but not connected to the laptop, it still consumes electricity.
