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Power Supplies

DEFINITION:

Also see current, voltage, resistance,and Ohm's Law.

Electrical power is the rate at which electricalenergy is converted to another form, such as motion, heat, or an electromagnetic field. Thecommon symbol  … 
Definition continues below.



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eBook: Energy-efficient Server Technologies
sponsored by Dell, Inc.
WHITE PAPER: This paper explains how to achieve greater efficiency in data centers.
Posted: 03 Sep 2008 | Published: 29 Aug 2008
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Improving Data Center Energy Efficiency: A Holistic Approach
sponsored by Burton Group
WHITE PAPER: The need for more computer power and network storage shows no sign of stopping anytime soon, and data centers are already low on power. While energy-efficient technologies exist, they are not a panacea. Technology must be combined with...
Posted: 18 Jul 2008 | Published: 18 Sep 2007
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Comparing Data Center Batteries, Flywheels, and Ultracapacitors
sponsored by APC
WHITE PAPER: This paper compares several popular classes of batteries, compares batteries to both flywheels and ultracapacitors, and briefly discusses fuel cells.
Posted: 10 Jul 2008 | Published: 01 Jul 2008
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Tips to Improve Capacity Planning through Power Management
sponsored by Raritan Computer, Inc.
WHITE PAPER: In this paper, analyst Joe Clabby will describe what capacity planning is all about, data center capacity problems that IT managers are facing today, how these problems are being addressed.
Posted: 10 Jul 2008 | Published: 01 Jul 2008
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AC Vs. DC Power Distribution for Data Centers
sponsored by APC
WHITE PAPER: In this paper, the characteristics, features, and limitation of AC and DC distribution are explained.
Posted: 10 Jul 2008 | Published: 01 Jan 2007
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Deploying High-Density Zones in a Low-Density Data Center
sponsored by APC
WHITE PAPER: New breakthroughs in power and cooling technology allow for a simple and rapid deployment of self-contained high-density zones with an existing or new low-density center. This white paper details how...
Posted: 10 Jul 2008 | Published: 01 Jan 2008
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Power Basics for IT Professionals
sponsored by Hewlett-Packard Company
WHITE PAPER: In the next decade, power, with its attendant heating, cooling, cost, reliability and dependability issues, will be the greatest challenge for the vast majority of data center operations. IT professionals attempting to deal with...
Posted: 11 Jun 2008 | Published: 10 Jun 2008
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Optimizing Facility Operation in High Density Data Center Environments
sponsored by Hewlett-Packard Company
WHITE PAPER: This paper describes issues of high processor and server density within existing data center infrastructures. It identifies methods to optimize the effectiveness of power and cooling resources in facilities that are deploying high-density equipment...
Posted: 11 Jun 2008 | Published: 01 Aug 2007
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Green Benefits Put Thin-Client Computing Back on the Desktop Hardware Agenda
sponsored by Hewlett-Packard Company
WHITE PAPER: This white paper reviews how the growth of green benefits has resurrected the thin-client computing debate.
Posted: 10 Jun 2008 | Published: 10 Jun 2008
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A Breakthrough Approach for Efficient IT Service Delivery
sponsored by IBM
WHITE PAPER: Organizations in every industry are exploiting advanced technologies to gain a competitive advantage. In this whitepaper learn about IBM's vision for the new enterprise data center which offers an evolutionary new model for efficient IT delivery.
Posted: 29 May 2008 | Published: 01 Feb 2008
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Five Major Power Distribution Considerations for Data Center Racks
sponsored by Avocent
WHITE PAPER: Power densities and power consumption costs in data centers are rising. Learn what to consider when choosing the appropriate power distribution products at the rack level.
Posted: 11 Feb 2008 | Published: 01 Feb 2008
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A Quantitative Comparison of High Efficiency AC Vs. DC Power Distribution for Data Centers
sponsored by APC
WHITE PAPER: This paper presents a detailed quantitative efficiency comparison between the most efficient DC and AC power distribution methods, including an analysis of the effects of power distribution efficiency.
Posted: 06 Feb 2008 | Published: 01 Jan 2007
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Disaster Recovery with Sunbelt Exchange Archiver
sponsored by Sunbelt Software
WHITE PAPER: Sunbelt's Exchange Archiver simplifies disaster recovery by using its revolutionary designed Hierarchical Storage Management (HSM). The HSM store is integrated into the SEA server and redirects archived email into various storage media.
Posted: 24 Jan 2008 | Published: 06 Aug 2008
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Cooling Strategies for IT Wiring Closets and Small Rooms
sponsored by APC
WHITE PAPER: Data centers and large computer rooms always include a cooling system. This paper teaches the principles of cooling small, distributed IT environments and provides guidance for the effective specification and design of supporting cooling systems.
Posted: 21 Jun 2007 | Published: 01 Jun 2007
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Strategies for Deploying Blade Servers in Existing Data Centers
sponsored by APC
WHITE PAPER: Installing blade servers in an existing data center creates a bewildering set of challenges and options. This paper explains how to evaluate the options and select the best power and cooling approach for a successful and predictable blade deployment.
Posted: 04 Jun 2007 | Published: 01 Jan 2005
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Implementing Energy Efficient Data Centers
sponsored by APC
WHITE PAPER: Electricity usage costs have become an increasing fraction of the total cost of running a data centers. This paper explains how achieve electricity savings and provides examples of methods that can greatly reduce electrical power consumption.
Posted: 04 Jun 2007 | Published: 01 Dec 2006
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POWER SUPPLIES DEFINITION (continued): …  for power is the uppercase letter P. The standard unit is the watt,symbolized byW. In utility circuits, the kilowatt (kW) is often specified instead;1 kW = 1000 W.

One watt is the power resulting from an energy dissipation,conversion, or storage process equivalent to one joule per second. When expressed in watts, power is sometimes called wattage. The wattage in a direct current (DC) circuit is equal to the product of the voltage … 
Power Supplies definition sponsored by SearchCIO-Midmarket.com, powered by WhatIs.com an online computer dictionary



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