Choosing the right DC Power Supply for your Application by Bob Preville
The DC Power Supply is a rather fundamental electronic device, however there are hundreds of DC Power Supply products on the market from dozen of manufacturers. Narrowing down the best product for your application and budget can be a daunting task. This article addresses DC Power Supply... Choosing the right DC power supply for your application requires definition of some basic design specifications: voltage range, current range, number of outputs, power cleanliness (known as “ripple”) and programmability.

The Importance of Your Computer Power Supply by Alan LeStourgeon
Inside your computer is a component that is the lifeblood of your hardware system. It is responsible for your motherboard, your hard drives, your CD and DVD drives, and a half-dozen other possible components. For many people, the only part they see of this important component - the power supply... Finding out how many watts a power supply can generate is the first way to determine if your computer system is risking being underpowered. ... A power supply is measured primarily in terms of watts. ... But don't buy a power supply that far exceeds your realistic expectations; you'll just be...

Repair LCD Power Supply The Easy Way by Jestine Yong
Troubleshooting LCD monitor power supply pack is easier than the crt monitor power supply. It is small and compact and usually has only one output which is 12 volt and range from 2 ampere to over 4 ampere. Some designed have 18 and 24 volts also. Nowadays most LCD power supplies are build into... If you are unsure of how to troubleshoot power supply, I urge you to read all my power supply articles at the power supply page. ... If you do not have the external dc power supply, you can always use this method to isolate the problem especially the symptoms are no power, low power and power blink.

Laptop and Notebook Computer AC Power Adapters by Stella Blue
An AC Power Adapter is an electronic device which produces a specific direct current from the mains with an Alternating Current (AC) . Although actually a power supply it is popularly known as an AC Power Adapter or AC Adapter. Laptops along with most other portable devices use Direct Current... Universal Laptop Power Adapters Complying with most mains power supplies worldwide, a universal power adapter or power supply is able to accept an input voltage ranging from 100 - 240 V with a frequency range of 50 - 60Hz.

Computer Power Supply: How Much is Enough? by Michael Quarles
You may be wanting to build a new PC, or upgrade the unit you have now. Since computers require more wattage than ever before, concerns about your power supply are sure to surface. The question "How much is enough?" has to be answered. Fortunately, simple math, and the numbers I'll supply with... On the other hand, you can design a power miser, like I did in my book "Building a PC for Beginners" . ... If, for instance, you planned on salvaging an older case with a 250 watt power supply, and wanted to base your unit on a Pentium 4, you better think again.

Computer Memory Problems by Michael Russell
In this article we're going to concentrate on why and how memory goes bad and what causes memory problems. If you've ever worked on a PC and all of a sudden in the middle of blasting the heck out of some space invader your PC goes black and then suddenly reboots look no further than some kind of... If you have a defective power supply, or one that is just plain cheap, what happens is your power supply may fail to filter out the noise that can mess up your computer system. ... So while it may appear that the chip itself is bad the real problem is with the power supply.

The Basic UPS Guide by Jonathan Kremer
It could happen to you at any time, and in a blink of an eye. All it takes is a small spike, surge, brownout, or any other fluctuation in the voltage , and your equipment can be permanently damaged, your data destroyed, and your operating system files corrupted. ... A UPS (Uninterrupted Power Supply) is a power supply that includes a battery to maintain power in the event of a power outage. ... Unlike the other types of UPS, this one uses the battery as its main source of power and the line power is the secondary source of power.

5 Simple Steps to a Quiter PC by Rudradatta Rath
No one wants their computer to be loud, but in order to keep components running at safe temperatures, cooling fans can wind up making the system sound like a blow dryer. A computer sitting in the living room for use with a home theater system has to be quiet so that it does not interfere with... These fan less power supplies don’t follow the guidelines of typical design and there are other ways to quiet a power supply without removing the fans all together. ... Power supplies: The typical computer power supply features two 80mmfans to keep it cool, which will obviously also generate some...

Laptop DC Jack Repair by John Vizaniaris
By far, the most common piece of hardware to fail on any laptop is the DC Jack (the plug that accepts power on the laptop). There are several reasons for the high failure rate but the two most common are poor handling and poor design. I would say over 90% of these DC jacks are soldered right on... If the light is working then it is not the power supply. ... If your power supply does not have the indicator light get a voltmeter, plug the laptop cord into the wall and using a voltmeter check the end that goes to the laptop.

Power and Your PC by Jason Kohrs
The power coming into a computer is the most critical component, and it may be one of the most overlooked. It is just taken for granted that it will always be there and working properly. A top of the line processor and ultra powerful video card do nothing if a system does not receive the ample,... In addition to checking out the total wattage of a power supply, looking for strong amperage ratings on the 3.3V, 5V, and 12V lines is also recommended, as power supplies with identical total power ratings may distribute the power to the various lines in different quantities.