Power Supply Desktop
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 450W ATX 12V Computer Power Supply Desktop PC PSU PS 450 Watt  US $19.75
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What is Switch Mode Power Supply?
Every electrical or electronic device needs power for work and the computer is not exception to it. Computers, too, have a particularly designed power supply component known as Switch Mode Power Supply (SMPS). SMPS converts raw input power to controlled voltage and current for the operation of various components of the computer. SMPS uses switches for high efficiency. The primary function of SMPS is to convert the alternating current (AC) power available in homes into direct current (DC) required for a computer system. In desktop computers, a metal box found in the corner of the CPU case supplies
power to various components in the CPU box. The power supply converts 115-230 volt AC into DC that is required for computer components to work.
The terms such as voltage, AC, DC, etc., are closely associated with the power supply or SMPS. Voltage is an electric potential difference between two points and is measured in volts. AC stands for alternating current. It is an electric
current whose magnitude and direction vary cyclically. DC stands for direct current. It is considered as the constant flow of electrons in a single direction from low to high potential. Computers use DC power. Because of the advantage of alternating current over direct current in transforming and transmission, electric power distribution today is nearly everywhere alternating current.
The SMPS or power supply of a computer comes in different form factor styles. The form factor refers to the physical dimensions of a component. The form factor of the power supply must match with the form factor of the computer case into which the SMPS is inserted. There are various industry standard form factors available. Some of the commonly used form factors with their characteristics are given below:
1. LPX
2. ATX
3. SFX
The LPX form factor style power supply has exactly the same motherboard and disk drive connectors as the previous standard power supply form factors. LPX form factor power supply differs in its reduced size that allows building much smaller and consumer oriented PCs. Due to their small size, they can be put into almost every type of computer cases.
The ATX form factor is developed by Intel in 1995. ATX is similar to LPX in physical dimensions. The difference between the two is that the power pass through-outlet for the monitor has been removed from ATX. Another difference is that in ATX, the cooling fan is mounted along the inner side of the power supply. With this kind of arrangement, the fan draws air in from the
back of the chassis and blows it inside across the motherboard.
The SFX form factor style power supply is 100 mm wide, 125 mm deep, and 63.5 mm in height. It includes a 60 mm power supply fan for cooling. The main SFX motherboard connector is in the same shape and size as the ATX connector. The one difference here is that the SFX power supply specification does not support the -5V compatibility voltage and, therefore, should not be used with motherboards that have ISA slots.
About the Author
Shweta Live is the Author of the article What is Switch Mode Power Supply? And provides information FCBC(Float Cum Boast Charger), SMPS Power Supply, DC-AC Converter/Inverters, GSM/GPRS Ethernet Router.
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HP 450937-001 Power Supply Desktop Power Supply 475 Wat $34.21 HP 450937-001 Power Supply Desktop Power Supply 475 Wat |
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Dell HP-D0501A0 Power Supply Desktop Power Supply 50 Watt $54.46 Dell HP-D0501A0 Power Supply Desktop Power Supply 50 Watt |
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305W Dell OptiPlex Desktop Power Supply P192M $57.02 305W Dell OptiPlex Desktop Power Supply P192M |
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4PORT USB HUB WITH POWER SUPPLY DESKTOP $43.99 4PORT USB HUB WITH POWER SUPPLY DESKTOP |
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255W Dell OptiPlex 760 Desktop Power Supply N249M $26.8 255W Dell OptiPlex 760 Desktop Power Supply N249M |
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210W Dell Desktop Power Supply For Dell GX280 W5184 $19.44 210W Dell Desktop Power Supply For Dell GX280 W5184 |
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In-Win BQ656.AD80TBL 80W Power Supply Desktop Case (Black) BQ656AD80TBL $75.7 In-Win BQ656.AD80TBL 80W Power Supply Desktop Case (Black) BQ656AD80TBL |
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MAXON ACC402 Desktop Charger with Power Supply For Gmrs21X $33.08 Desktop Charger with Power Supply. Slow Dual Slot Charger. For use with Maxon GMRS21X. Manufactured to the Highest Quality Available. Design is stylish and innovative. Satisfaction Ensured. |
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Hp 221270001 Desktop Power Supply 120 Watt $40.5 Product Description: Compaq Power Supply 120W with Power Factor Correction (PFC). Input: 100127/200240V 5.0/2.5A 5060Hz. Wattage: 120 Watts. Connectors: 3 Standard Molex Connectors. 1 20pin Power Connector. 1 Floppy Connector. Compatible Models: Compaq Deskpro EX Desktop and Minitower. |
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Corsair ATX Power Supply $143.99 Power your desktop computer with this power supply that features a 90V - 264V input voltage range to allow for smooth operation and provides over current, voltage, power, under voltage and short circuit protection. |
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Samlex SEC1235 SEC1235 Desktop Switching Power Supply $203.76 This high efficiency UL609501 approved ACDC power converter provides a highly regulated output DC voltage of 13.8 Volts at 30 Amps with an AC input of 120 Volts 60 Hz (230 Volts 50 Hz possible models also available). These advanced switchmode DC power supplies were designed specifically for land mobile radio applications. The power supplies produce clean reliable power and are highly filtered to suppress RFI. The unit comes with a detachable power supply cord with NEMA 515P plug. Features include overcurrent shortcircuit and overtemperature protection. The ACDC power supply conforms to FCC Part 15(B) class B digital device. |
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Samlex SEC1212 SEC1212 Desktop Switching Power Supply $133.2 This high efficiency UL609501 approved ACDC power converter provides a highly regulated output DC voltage of 13.8 Volts at 10 Amps with an AC input of 120 Volts 60 Hz (230 Volts 50 Hz model also available). These advanced switchmode DC power supplies were designed specifically for use with land mobile radio. The power supplies produce clean reliable power and are highly filtered to suppress RFI. The unit comes with a detachable power supply cord with NEMA 515P plug. Features include overcurrent shortcircuit and overvoltage protection. The ACDC power supply conforms to FCC Part 15(B) class B digital device. |
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Dell N305E00 Power Supply Desktop Power Supply 305W $56.7 Power provided: 305 W. Category: Power Supply. Warning: Computers and computer circuit boards as well as other electronic equipment contain lead which is a chemical known to the State of California to cause cancer or cause birth defects and other reproductive harm. Please wash hands after handling circuit boards and other internal components of computers and electronic equipment and avoid inhalation of fumes if heating the solder on the internal components or circuit boards. |
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Seiko Power Supply for DPU-414 $21.99 100 V AC to 120 V AC 110 V AC 4.09" Width 6.35 oz 7 V DC @ 2 A Compatibility: Seiko DPU414 Desktop Thermal Serial Printer PW-4007-JU1-E Power Supply for DPU-414 Proprietary Power Supply Seiko Seiko Instruments USA, Inc www.seikoinstruments.com |
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76000694 - Portserver Ii Desktop Power Supply - Ac 120/240 V $97.95 [322721] UPC: 663072927387 UNSPC: 39121006 10L x 6.5W x 4.5H 1.45 LB 0.12 Cubes |
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240W HP Power Supply Input Voltage 100 To 240VAC For Desktop DC7800 Small Form Factor 437798-001 $42.89 240W HP Power Supply Input Voltage 100 To 240VAC For Desktop DC7800 Small Form Factor 437798-001 |
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Hp 09503657 Desktop Power Supply 120 Watt $35.75 Hp 120W Power Supply. Warning: Computers and computer circuit boards as well as other electronic equipment contain lead which is a chemical known to the State of California to cause cancer or cause birth defects and other reproductive harm. Please wash hands after handling circuit boards and other internal components of computers and electronic equipment and avoid inhalation of fumes if heating the solder on the internal components or circuit boards. |
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Medfusion Power Supply $142.6 Medfusion Power Supply |
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Elo Power Supply Brick $57.99 100 V AC to 240 V AC 110 V AC 12 V DC @ 2.50 A 220 V AC Compatibility:Elo TouchSystems 1515L 15" LCD Desktop Touchmonitor (1000 Series)Elo TouchSystems 1537L 15" LCD Rear-Mount Touchmonitor (1000 Series) E360741 Elo Power Supply Brick Proprietary Power Supply RoHS Tyco Electronics Yes www.tycoelectronics.com |
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Hp 51871100 Desktop Power Supply 250 Watt $35.75 This ATX12V power supply is a 250W PS2 Form Factor five output unit with remote on/off UL CSA CE TUV approvals. Original HP part number 51871098 used in many Pavilion and Presario computers. Airflow drawn out of case into surroundings by 80mm internal fan. Builtin power status LED above AC inlet. Product also suitable for HP part numbers 09502700 09503971 51836914 and 51882622. Bestec model ATX25012Z Rev. D. Category: Power Supply. Type: OEM ATX12V. Dimensions: 140L x 150W x 86H mm (Dimensions US: 5.5 x 5.9 x 3.4 ). Safety: UL CSA TUV CE. Efficiency: 68 minimum at full load. Reliability: > 50K hours at 25C ambient conditions. AC Input: 115/230VAC selectable 6/3A 4763HZ. DC Outputs (Amps Max/Min): +3.3V (18/0.3A) +5V (25/0.5A) +12V (14/0.0A) 12V (0.8/0.0A) +5VSB (2.0/0.0A). DC Notes: (1) +3.3V and +5V total output not to exceed 165W (2) +5V and +12V total output not to exceed 218W. Warning: Computers and computer circuit boards as well as other electronic equipment contain lead which is a chemical known to the State of California to cause cancer or cause birth defects and other reproductive harm. Please wash hands after handling circuit boards and other internal components of computers and electronic equipment and avoid inhalation of fumes if heating the solder on the internal components or circuit boards. |
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300W ATX PC Computer Power Supply Penti $56.67 A reliable upgrade or replacement power supply for desktop PCs. This power supply offers an upgrade or replacement to a variety of Intel or AMDbased ATX desktop computer systems. Compliant with the industry standard ATX specification and using the standard ATX formfactor this power supply (PSU) can be used as a replacement in a variety of popular OEM desktop systems. Conforming to ATX revision 2.03 this power supply features a 20pin ATX power connector and 6pin AUX power connector for support for older legacy computer systems as well as some newer low powered systems with it s ATX12V connector. High quality components and a built in 80mm cooling fan lend to a durable and reliable power supply. |
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Atx2Pw430Pro - Startech.Com Professional 430 Watt Atx12V 2.3 80 Plus Computer Power Supply Active Pfc - 430W Internal $60.89 upgrade to an Energy Efficient, Reliable, And High Performance PC Computer System This 430 Watt Power Supply is 80 Plus Certified, Providing Stable Power While Balancing Maximum Energy Efficiency. Compliant With Atx12v 2.3 Standards, This Eps12v 2.91 Power Supply Offers Four 12v Power Rails, Two 6-pin Pci Express Connectors And an 8-pin Eps Connector. a Versatile Power Solution, The Psu is Suitable as an Energy Efficient Replacement/upgrade Power Supply For Desktop Pcs, And Features Active Power Factor Correction And 20/24 Pin Motherboard Support to Deliver The Flexibility Needed to Support Amd or Intel Cpu-based Entry-level Servers, Gaming Pcs And High End Work Stations. To Encourage Re-using Your Existing PC Power Cord as a New Environmental Initiative, a PC Power Cord is Not Included; However if You Require One They Are Available as an Optional Accessory. designed to Provide Dependable, Long-lasting Power, This 80 Plus 430 Watt Atx12v 2.3 Eps Computer Power Supply Meets or Exceeds 80 Plus, Providing 80.5% or Greater Efficiency at 20%, 50% And 100% Loads And is Backed by Startech.com''s 3-year Warranty. [44894V] UPC: 065030839846 UNSPC: 39121004 9.4L x 8.5W x 4H 4.4 LB 1 Cubes |
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StarTech.com Computer Power Supply (Internal) $35.99 1 110 V AC 115 V AC 2 Year Limited 2.88 lb 220 V AC 230 V AC 250 W 3.30" Height x 5.90" Width x 5.90" Depth 40000 Hour 50 Hz ~ 60 Hz Computer Power Supply (Internal) 1 x power cord Manual Warranty Registration Form High quality connectors provide minimal resistance and enhanced electric conductivity High-Flow fan provides efficient cooling for the system and power supply Superior EMI/RFI power filtration system provide low noise/ripple for super clean and stable power to all system components Built-in quad protection: Over Voltage Protection, Short Circuit Protection, Over Temperature Protection and Over Power Protection ATX version 2.03 and ATX12V compliant Rear power cut-off switch Intel Pentium II, III, 4, AMD K6 & Athlon processors TUV UL CSA CE FCC CB A reliable upgrade or replacement power supply for desktop PCs. This StarTech.com power supply offers an upgrade or replacement to a variety of Intel or AMD-based ATX desktop computer systems. Compliant with the industry standard ATX specification and using the standard ATX form-factor, this power supply (PSU) can be used as a replacement in a variety of popular OEM desktop systems. Conforming to ATX revision 2.03, this power supply features a 20-pin ATX power connector and 6-pin AUX power connector, for support for older, legacy computer systems, as well as some newer, low powered systems with it''s ATX12V connector. High quality components and a built in 80mm cooling fan lend to a durable and reliable power supply, while being backed by StarTech.com''s 2 year warranty and free lifetime technical support. ATX Power Supply ATXPOWER250 Computer Power Supply (Internal) StarTech.com www.startech.com |
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Atx2Pw630Pro - Startech.Com Professional 630 Watt Atx12V 2.3 80 Plus Computer Modular Power Supply - 630W Internal $95.52 reduce Internal Cable Clutter And Upgrade to High Efficiency 80 Plus Performance. this 630 Watt Modular Power Supply is 80 Plus Certified, Making it Suitable as an Energy Efficient Replacement/upgrade Power Supply For Desktop Pcs. this Atx12v Psu Features Active Power Factor Correction And 20/24-pin Motherboard Support to Deliver The Flexibility Needed to Support Amd or Intel Cpu-based Entry-level Servers And High-end Workstations, While Providing Stable Power And Maximum Energy Efficiency. compliant With Atx12v 2.3 Standards, This Eps12v 2.91 Power Supply Offers Four 12v Power Rails, an 8-pin Eps Connector, And a Modular Cable Design, Enabling You to Choose The Connectors You Require Based on Your System Configuration. The Power Supply Also Features a 120mm Fan For Quieter, More Efficient Cooling in Demanding Systems. this Higher Level 630 Watt Atx12v 2.3 Eps12v Power Supply Meets or Exceeds 80 Plus Standards, Providing 80% or Greater Efficiency at 20%, 50% And 100%. [44097W] UPC: 065030840224 UNSPC: 39121004 9L x 10W x 4H 6.35 LB 1 Cubes |
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power supply $39.99 Athenatech - Power supply ( internal ) |
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Power supply $108.99 VisionTek - Power supply ( internal ) |
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Atx2Power430 - Startech.Com 430 Watt Atx12V 2.3 80 Plus Computer Power Supply Active Pfc - 430W Internal $62.42 this 430 Watt Power Supply is 80 Plus Certified, Providing Stable Power While Balancing Maximum Energy Efficiency. Compliant With Atx12v 2.3 Standards, This Eps12v 2.91 Power Supply Offers Four 12v Power Rails, Two 6-pin Pci Express Connectors And an 8-pin Eps Connector. A Versatile Power Solution, The Psu is Suitable as an Energy Efficient Replacement/upgrade Power Supply For Desktop Pcs, And Features Active Power Factor Correction And 20/24 Pin Motherboard Support to Deliver The Flexibility Needed to Support Amd or Intel Cpu-based Entry-level Servers, Gaming Pcs And High End Work Stations. Designed to Provide Dependable, Long-lasting Power, This 80 Plus 430 Watt Atx12v 2.3 Eps Computer Power Supply Meets or Exceeds 80 Plus, Providing 80.5% or Greater Efficiency at 20%, 50% And 100% Loads And is Backed by Startech.com's 3-year Warranty. [47469V] UPC: 065030839303 UNSPC: 39121004 9.4L x 3.9W x 8.5H 5.05 LB 1 Cubes |
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Atx2Power530 - Startech.Com 530 Watt Atx12V 2.3 80 Plus Computer Power Supply Active Pfc - 530W Internal $65.67 this 530 Watt Power Supply is 80 Plus Bronze Certified, Providing Stable Power While Balancing Maximum Energy Efficiency. Compliant With Atx12v 2.3 Standards, This Eps12v 2.91 Power Supply Offers Four 12v Power Rails, Two 6-pin Pci Express Connectors And an 8-pin Eps Connector. A Versatile Power Solution, The Psu is Suitable as an Energy Efficient Replacement/upgrade Power Supply For Desktop Pcs, And Features Active Power Factor Correction And 20/24 Pin Motherboard Support to Deliver The Flexibility Needed to Support Amd or Intel Cpu-based Entry-level Servers And High End Work Stations. Designed to Provide Dependable, Long-lasting Power, This Higher Level 80 Plus 530 Watt Atx12v 2.3 Eps12v Computer Power Supply Meets or Exceeds 80 Plus Bronze Standards, Providing 82% or Greater Efficiency at 20%, 50% And 100% Loads And is Backed by Startech.com's 3-year Warranty. [47466V] UPC: 065030839310 UNSPC: 39121004 9.5L x 4W x 8.8H 5.15 LB 1 Cubes |
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StarTech.com 300W ATX Power Supply $299.99 -12 V DC -5 V DC 1 x 20-pin ATX Motherboard 115 V AC 12 V DC 2 Year 2 x 4-pin SP4 Floppy Drive 230 V AC 3.3 V DC 3.35" Height x 5.90" Width x 5.87" Depth 300 W 300W ATX Power Supply 40000 Hour 5 V DC 50 Hz or 60 Hz 6 x 4-pin LP4 Hard Drive 8 A @110 V AC/4 A @220 V AC Pentium II, III and IV Processors AMD K6, Athlon and Duron processors Provides extra power capacity for PC servers with several hard drives Provides the extra current required by 1 GHz and faster CPUs Provides extra power required by leading edge 3D video accelerator cards Provides extra current and power capacity for overclocking CPUs High quality connectors provide minimal resistance and enhanced electric conductivity Premium EMI/RFI power filtration system provides low noise/ripple for super clean and stable power to all system components 10 Piece Bulk Pack A reliable upgrade or replacement power supply for desktop PCs. This StarTech.com power supply offers an upgrade or replacement to a variety of Intel or AMD-based ATX desktop computer systems. Compliant with the industry standard ATX specification and using the standard ATX form-factor, this power supply (PSU) can be used as a replacement in a variety of popular OEM desktop systems. Conforming to ATX revision 2.03, this power supply features a 20-pin ATX power connector and 6-pin AUX power connector, for support for older, legacy computer systems, as well as some newer, low powered systems with it''s ATX12V connector. High quality components and a built in 80mm cooling fan lend to a durable and reliable power supply, while being backed by StarTech.com''s 2 year warranty and free lifetime technical support. ATX Power Supply ATX12V Power Supply ATXPOWER300B StarTech.com www.startech.com |
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Atxpw500Pro2 - Startech.Com Professional 500W Atx Eps12V 2.92 Computer Power Supply W/ Two Pcie - 500W Internal $65.35 upgrade or Replace Your Desktop PC Power Supply With High-performance Eps/atx12v Capabilities the Atxpw500pro2 500 Watt Eps12v/atx12v Power Supply Delivers a Professional-grade PC Power Solution, With Support For Recent Intel And Amd Dual-core Cpu Designs. featuring a Comprehensive Range of Device Connections, Including Sata And Dual Pci Express Connectors For Systems With High-end Video Cards, The Psu is Compliant With Atx12v 2.01 & Eps12v 2.92 Revision Standards And Offers Dual 12v Power Rails And a 20/24 Pin Motherboard Connection to Ensure Broad Compatibility And Simple Installation. to Maintain Stable Power Delivery to The Most Demanding Devices, The Power Supply Features Quad+1 Protection Against Short-circuit, Over-power, Over-voltage And No-load Situations, as Well as an 80mm Dual Ball Bearing Fan to Help Keep The Power Supply Cool For Peak Performance. [93762S] UPC: 065030840460 UNSPC: 39121004 9.4L x 4W x 7.9H 5.05 LB 1 Cubes |
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Atxpw550Pro2 - Startech.Com Professional 550W Atx Eps12V 2.92 Computer Power Supply W/ Two Pcie - 550W Internal $91.69 upgrade or Replace Your Desktop PC Power Supply With High-performance Eps/atx12v Capabilities the Atxpw550pro2 550 Watt Eps12v/atx12v Power Supply Delivers a Professional-grade PC Power Solution, With Support For Recent Intel And Amd Dual-core Cpu Designs. featuring a Comprehensive Range of Device Connections, Including Sata And Dual Pci Express Connectors For Systems With High-end Video Cards, The Psu is Compliant With Atx12v 2.01 & Eps12v 2.92 Revision Standards And Offers Dual 12v Power Rails And a 20/24 Pin Motherboard Connection to Ensure Broad Compatibility And Simple Installation. to Maintain Stable Power Delivery to The Most Demanding Devices, The Power Supply Features Quad+1 Protection Against Short-circuit, Over-power, Over-voltage And No-load Situations, as Well as a 120mm Dual Ball Bearing Fan to Help Keep The Power Supply Cool For Peak Performance. [2787705] UPC: 065030840477 UNSPC: 39121004 9.4L x 8W x 4H 5.2 LB 1 Cubes |
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Respironics Universal Power Supply $191.7 Universal Power Supply for use with Avant 9600 Pulse Oximeter. |
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Respironics Replacement Power Supply $69.13 Replacement Power Supply for Smart Monitor 2 Apnea Monitor. |
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Atx2Pw530Pro - Startech.Com Professional 530 Watt Atx12V 2.3 80 Plus Computer Power Supply Active Pfc - 530W Internal $70.45 upgrade to an Energy Efficient, Reliable, And High Performance PC Computer Systemthis 530 Watt Power Supply is 80 Plus Bronze Certified, Providing Stable Power While Balancing Maximum Energy Efficiency. compliant With Atx12v 2.3 Standards, This Eps12v 2.91 Power Supply Offers Four 12v Power Rails, Two 6-pin Pci Express Connectors And an 8-pin Eps Connector. a Versatile Power Solution, The Psu is Suitable as an Energy Efficient Replacement/upgrade Power Supply For Desktop Pcs, And Features Active Power Factor Correction And 20/24 Pin Motherboard Support to Deliver The Flexibility Needed to Support Amd or Intel Cpu-based Entry-level Servers And High End Work Stations. To Encourage Re-using Your Existing PC Power Cord as a New Environmental Initiative, a PC Power Cord is Not Included; However if You Require One They Are Available as an Optional Accessory. designed to Provide Dependable, Long-lasting Power, This Higher Level 80 Plus 530 Watt Atx12v 2.3 Eps12v Computer Power Supply Meets or Exceeds 80 Plus Bronze Standards, Providing 82% or Greater Efficiency at 20%, 50% And 100% Loads And is Backed by Startech.com''s 3-year Warranty. [44895V] UPC: 065030839853 UNSPC: 39121004 9.4L x 8.6W x 4H 4.4 LB 1 Cubes |
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Va-100P-5 - 10-Outlet Power Supply $396 This AC Power Supply is an Efficient Ten-outlet Universal Switching Power Supply That Can Supply 5V DC at up to 8a. It is Designed to Operate Kramer Products That Use an External 5V DC Power Transformer. [2965576] Truck Delivery UNSPC: 39121004 13.78L x 8.86W x 3.15H 5 LB 1 Cubes |
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250W ATX PC Computer Power Supply AMD r $52.55 A reliable upgrade or replacement power supply for desktop PCs. This power supply offers an upgrade or replacement to a variety of Intel or AMDbased ATX desktop computer systems. Compliant with the industry standard ATX specification and using the standard ATX formfactor this power supply (PSU) can be used as a replacement in a variety of popular OEM desktop systems. Conforming to ATX revision 2.03 this power supply features a 20pin ATX power connector and 6pin AUX power connector for support for older legacy computer systems as well as some newer low powered systems with it s ATX12V connector. High quality components and a built in 80mm cooling fan lend to a durable and reliable power supply. |