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PSU Stability Guide – Here’s How You Check Things Out

September 3rd, 2010 · How To Diagnose, Power Supply

Power supplies provide power to your entire computer. They do this by converting high voltage alternating AC current from the wall to a lower voltage direct current that your computer can use. See our guide to Understanding Power Supplies for more on this subject. To determine how much power you really need, it is best to use a calculator to find a ballpark estimate. As I have previously mentioned regarding power supply efficiency, it is best to have an adequate, but not overabundant supply of power. Once you have your computer rig all set up, you should check the stability of the computer by stressing the computer with a few handy programs. By running such a stress test, the computer will run various calculations and draw the most power.

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Points to Know about Your Computer Power Supply Unit

September 2nd, 2010 · Power Supply

Computer power supplies are the main source of energy for any desktop computer. Their operating scheme, the meaning of colored wires inside, and the relationship between voltage and current to output power is outlined in this article. How to measure power supply voltages is also demonstrated.

Power Supply Unit Basics

Ever wonder what is happening inside your computer supply? Computers cannot run without a source of energy. They require a proper power unit in order to be fed. Since the first computers, power supplies have been used for feeding every electronic device or circuit inside a computer. But how do these electric generators work and provide electricity to the computers? There’s no magic inside. A power supply simply draws AC (alternating current) voltage from an electrical source and converts it to DC (direct current) voltage.

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Top 10 Ways to Maximize Battery Life Without Installing Anything

September 1st, 2010 · Batteries

You can buy a bigger battery. You can install special utilities and software. You can even go into Control Panel and configure all kinds of power settings. But, these 10 Power Saving Tips will give you a lot more time on that same amount of battery juice.

Powerful Tips to Use Less Power

If you use your laptop without plugging in, you know how frustrating it can be to run out of power. The sad fact is that batteries grow weaker over time. Every laptop manufacturer will tell you that batteries are “consumables” meaning that just like toner or ink, they are going to run out of functionality sooner or later. Yet, even fresh new batteries often don’t seem to last as long as they should. Chances are, these 10 tweaks will give you a lot more time on battery power.

Top 10 Power Saving Tips

1. Reduce your screen brightness. Sure, when you are plugged in, you can jack up the brightness all you want, but when you are running off of battery, a brighter screen is a battery drainer. There is more strategy to this than just turning down the brightness. You still have to see your screen, so location selection is important. Choose a spot away from bright windows. In fact, the dimly lit corner will allow you to use the darkest screen setting.

2. Stop Using the CD-ROM. Whether you are running a game or playing movie, keeping that CD spinning at several thousand RPMs takes a lot of juice and sucks the life from your battery. Install everything you will need to use when unplugged to the hard drive, and save your CD based things for when you are plugged in.

3. Bring Along Your iPod. Yes, your laptop has your music collection installed, and yes, Media Monkey is awesome, but playing music burns the juice. Run your music collection off your MP3 player instead and save your battery.

4. Use The Table. Every notice how warm your laptop gets on your lap? That’s because your body is a great insulator, and chances are your body is blocking one or more of the vents needed to cool your laptop. This means that your laptop has to run the fan to stay cool. Put it up on the table, and you’ll get the airflow your laptop was designed for which will minimize the use of the fan and save power.

5. Disconnect Your Accessories. All of those devices connected to your PC are sucking battery life like leaches on an open wound. USB devices are setup to draw power via the USB connection. Unfortunately, they all consider your laptop the equivelent of a wall socket, so they just take all the juice they want without regard to your battery life. The PDA you plugged in an hour ago has been charging the battery, lighting its screen at maximum brightness, and syncing every 15 minutes. Drain, drain, drain.

6. Pick a Cool Spot. Not only does sunlight wash out your screen making you use a brighter setting, it also warms up your laptop faster requiring more running of the fan. A cool spot will let you use a darker monitor setting, and keep that fan off.

7. Turn Off Your Utilities. Ok, you need your resident virus scanner because you never know what might be out there, but you do not need to be running a full hard drive scan when you are unplugged. I don’t care if it is Thursday at 3:00 PM (or whatever your automatic drive scanning is set to.) Likewise, no defragging, no file syncing. If you aren’t running it manually, close it down.

8. Set Your Wireless Power. If you ever have trouble connecting to a wireless network, chances are you jacked up the transmission power of your wireless adapter. That is a good move. But, if you are in the middle of Starbucks and the wireless router you are connecting to is right overhead, you don’t need the higher setting. Lower your transmit power to the lowest setting you can while still maintaining a connection.

9. Save Your High Power Applications. You know what I’m talking about. Those programs that when you run them light up your little hard drive light like a stuck green light at a busy intersection. Digital photography programs are a big culprit, as is anything that renders, compiles, or otherwise nails your system resources to the wall. Keep the use of those programs to a minimum.

10. Plan Ahead. Kirk wouldn’t always need more power from Scotty if he wasn’t always getting stuck in a jam. Make sure your laptop has a full charge before you head out. If you are going to be somewhere for a while, look for a power outlet when choosing your seat and plug in right away so someone doesn’t string their cord across the room to “your” outlet.

source: http://www.brighthub.com/computing/windows-platform/articles/10334.aspx

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Laptop Battery Truth, Lies and Propaganda

August 31st, 2010 · Batteries, Tips & Techniques

Computers are wonderful devices, but they are rather prone to frustrate even the most knowledgeable of users—especially when it comes to battery lifetime. This article outlines some basic care to lengthen charge and lifetime, as well as discussing why your battery isn’t performing as advertised.

How Batteries Live Their Lives

Even the best of batteries has a lifetime, over which it will naturally degrade—at least with current technologies. Most current laptops are made with lithium ion batteries, usually abbreviated Li-Ion. They can typically last between 300-500 charges, and have about 4 to 5 years of shelf life. This is a limitation simply built into the chemistry of the battery: there is no changing this, at least until better technologies develop. A reasonable expectation for your battery is that it will last somewhere between 2 and 4 years.

Of course, this will vary considerably by use—and abuse. You can considerably lengthen the lifespan of your battery by following some basic battery care steps.

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Extend the Life of Your PC – Care for the Power Supply!

August 30th, 2010 · How To Maintain, Power Supply

One key way to keep your PC in tip top condition is to make regular checks on the power supply unit (PSU). Usually situated in the top of your PC tower and distributing power to all of your PC hardware, the PSU is one vital component you cannot do without.

Ways to Maintain Your PC Power Supply

Getting the most out of your PC means taking care of each component – and the power supply unit (also known as the PSU) is one vital piece of hardware that needs to be kept in full working order so that you can get the best out of your computer.

The PSU is the part of your computer that you connect to the mains electricity supply via the “kettle lead” style cable. It is absolutely vital that the power supply is correctly setup, securely fitted and adequately cooled in order to guarantee the best performance from it, and by extension, your PC.

Maintaining your PSU is relatively easy – it’s mainly a case of keeping the device clean and dust free.

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When a Computer Power Supply Fails

August 29th, 2010 · How To Troubleshoot

Like everything else, computer power supply units (PSUs) eventually fail. Identifying the PSU as the problem in a broken computer is not always that easy. We explain how to diagnose and correct power supply problems.

Identifying the Problem

I’m assuming you have some technical knowledge and are competent working on computer electronics, otherwise take your computer to a repair shop. Take note of the Terms and Conditions of this website and the disclaimer on the following page.

The most obvious sign of PSU failiure is that the computer will not switch on. Try a different power lead (the cable connecting the computer to a power outlet), and a different wall socket (directly into the wall, not via an extension or multi socket as these may be defective). If you can’t hear the fan going round at the back of the computer, it’s almost certainly the PSU. If there is a switch on your PSU, make sure it is on. If that isn’t the problem, switch the PSU off, disconnect the power cable, open the case up and unplug and replug the motherboard power connectors. Sometimes they can get dirty or oxidised, and this should renew the connection and gives you a chance for a visual inspection.

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Differences in International Voltage Explained

August 28th, 2010 · Introductions

Differences in voltage and current standards between North America and Europe the focus of this explaination which reveals the circumstances behind the development of Nikola Tesla’s Alternating Current as an alternative to Thomas Edison’s Direct Current.

Thomas Edison and Direct Current

While you might be familiar with your own electrical devices and their requirements, you not might be aware that electrical goods bought in other countries are designed to run on a different voltage.

Electric travel shavers often have a switch to change between 110V and 240V (in conjunction with a mains adaptor), and this difference in voltage harks back to the very early days of mass production and distribution of electricity.

Thomas Edison – inventor of the modern lightbulb – developed the DC (direct current) standard for distributing electricity which produced 110V. Edison’s General Electric company became one of the main suppliers of electricity across the United States, but it soon became clear that the DC system was unsuitable for sending electricity across large power grids.

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How to Test the Power Supply in Your Computer

August 27th, 2010 · How To Troubleshoot

Intermittent or otherwise bizarre computer problems, or perhaps a computer that won’t turn on at all, may cause you to suspect the power supply. Before you run out and buy a new one, there is a cheap tool that you can use to test the power supply to rule it in or out.

Overview

If you were to think about your computer as a human body, which component do you think would be the heart? Just like our heart supplies blood to the body, the power supply in a computer supplies and controls power to the other components in the computer. If there is a problem with it, the entire system could be effected. Blue Screens, random reboots, dead machines, failed boots, and other intermittent problems can all be linked back to a faltering power supply.
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