Power Supply
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19V Power Supply Laptop AC Adapter for Acer 1412LC $15.83 |
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DC 12V 1A Regulated Switching Power Supply for LED Strip Light $11.55 |
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CISCO PWR-3825-AC-IP power supply $150.00 |
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Dell Laptop A/C Adapter Charger Power Supply PA-6 Family Model AA20031 $9.99 |
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3M C1060/XT1 3-Slot Battery Charger With Power Supply. FREE SHIPPING! $229.95 |
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Low-cost AC to DC Output Switch Power Supply 12V 12.5A $34.93 |
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HP 6525A High Voltage DC Power Supply PN 06525-90003 Op & Service Manual C-1D2 $29.99 |
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Standard ATX P4 330W Power Supply OEM switching 110-220 Volts $0.97 |
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GENUINE HP 0957-2146 AC PRINTER ADAPTER POWER SUPPLY DC 32V / 16V TESTED! $10.00 |
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ADC KENTROX DATASMART T1 DSU/CSU [78561] with Power Supply $26.00 |
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(4) 1/3″ Sony CCD 700TVL 3.6mm 36 IR LED Indoor Security Camera Power Supply Kit $365.00 |
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Trygon DC Power Supply HR40-2.5 40V 2.5A $46.89 |
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Multi-Tech Systems CC1600-Series PS1600 Power Supply $125.00 |
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TDK LAMBDA RTW24-13RH Power Supply 24V Switch Mode, Used, WARRANTY $95.00 |
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NEW Laptop Power Supply&Cord Charger for Acer Iconia Tab W500 W500-BZ467 W500P $0.99 |
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Kenwood PS-30 Power Supply $75.00 |
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HP Proliant DL140 Server 330w DL 140 DELTA DPS-350QB-1A Power Supply $26.99 |
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NEW Power Supply+Cord for Dell Inspiron 1420 1501 1520 1521 6000 700M N311Z $0.99 |
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BD DYN4200 Dynamite 15VDC 250W Power Supply $99.99 |
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Elpac Power Systems Power Supply OLV30-24 N/OVP #21429 $159.99 |
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AC 110V/220V Input to DC 5V 40A Switching Power Supply Converter $44.21 |
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Power Supply+Cord for Acer Aspire 3680 5050 5100 5315 5517 5520 5532 5720 3750Z $0.99 |
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Power Supply&Cord for Toshiba PA-1750-04 PA3715U-1ACA Satellite L505D-SP6928A $0.99 |
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SOLA 81-24-180-1 POWER SUPPLY 8812FP NEW IN BOX $18.50 |
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INTER-TEL AXXESS MITEL 48 VOLT POWER SUPPLY for IP PHONES 8660, 8662, 8622 $25.00 |
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MAXENT P420142X3 POWER SUPPLY BOARD 3501Q00201A Rev A $85.00 |
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VIZIO VW37L HDTV10A POWER SUPPLY DPS-247AP B $55.96 |
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VIZIO VF550M POWER SUPPLY DPS-433BP-2 REV:00 $49.94 |
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NEW Power Supply&Cord for IBM ThinkPad R60 R61 T60 T61 T61p X60 X61 Z60 Z61 $0.99 |
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Polycom Model# SPS-12-015-240 P/N 1465-42340-001 Power Supply $14.99 |
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Standard ATX 250W Power Supply for desktop OEM switching 110-220 Volts Used $19.67 |
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Laptop AC Power Supply Adapter Charger for Dell Studio 15 1535 1536 1537 1555 17 $0.95 |
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BOSE POWER SUPPLY SoundDock & SoundLink 95PS-030-CD-2 $59.99 |
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PWR-2811-AC-IP Cisco 2811 AC Inline Power Supply w/ 1 Year Wtny $269.00 |
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Cisco PWR-2811-AC-IP 2811 AC Inline Power Supply 1 Year Wtny $225.00 |
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DC 5V 10A Constant Voltage Switching Power Supply Box $21.55 |
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SONY HANDYCAM AC MAINS ADAPTER ADAPTOR BATTERY CHARGER POWER SUPPLY DCR-TRV7000 $18.15 |
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Vizio GV46L HDTV TV Parts DPS-319AP Power Supply Board (F15) $32.95 |
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Uniden AD-0005 AC Adapter Power Supply 9V 210mA #260 $9.77 |
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BOSE POWER SUPPLY SoundDock & SoundLink PSM40R-200 No Prongs Included $9.99 |
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5131:APC-American Power Conversion:SU5000RMT5U:Misc:Power Supply $1,200.00 |
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DC 5V 3A Single Output Switching Power Supply Adapter $18.90 |
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BOSE POWER SUPPLY SoundDock & SoundLink PSM40R-200 No Prongs Included $9.99 |
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LOT OF 2 – LEITCH 6801 POWER SUPPLY $49.95 |
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Kodak EASYSHARE 5300 All-In-One Inkjet Printer (No power supply) Free Shipping!! $50.00 |
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1 Female to 8 Male DC Power Supply Splitter Cable Line $5.76 |
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Grey Power Supply Adapter Cord For NINTENDO WII $1.39 |
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~ Integrated Power Designs CE-300-4004-10 Power Supply $24.99 |
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Coolermaster eXtreme Power Plus 700W RS-700-PCAA-E3 Power Supply 80% efficiency $81.60 |
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Hercules Black micro ATX 500W Silent Cool Power Supply PSU w/20-24pin SATA NEW $24.90 |
All you need to know about desktop power supplies
The power supply unit is the most vital component in the operation of a desktop computer. A desktop power supply unit supplies power to the other components in a computer, and converts alternating current (AC) from an electrical outlet to direct current (DC) which is needed by the computer. Power supplies can be inbuilt or external. External power supplies are crucial to the operation of virtually all small electronic devices. They convert high voltage AC to low voltage DC used to power electronic products, like MP3 players, PDAs, camcorders, digital cameras, mobile phones, IT equipment and laptops.
Power supplies are sold based on their wattage, which is their total power output. External desktop power supplies range from as low as 15W to as high as 220W. You need to find one that will power all the components connected to the system. It is important that the power supply can support the various voltage levels and the current supplied. For more advanced computers, with extra features and gadgets, you will need a more robust power supply unit. The power supply should be able to switch voltages and distribute it to all components required. Power supplies these days can provide various output voltage levels, from 3.3V, 5V, 12V, 18V, 24V and even 48V.
Desktop power supplies are available in various models such as switched-mode, linear, regulated and unregulated models. These can supply output voltage in single, dual or triple output models. A switched-mode power supply is a unit that incorporates a switching regulator in order to provide the required output voltage. Linear power supplies are much less efficient than switched-mode power supplies, and adjust the voltage to maintain a constant output voltage. A regulated power supply is a stable power supply that controls the output voltage to a specific value. An unregulated power supply is not subject to the control or authority of a voltage regulator, and the DC output voltage is dependent upon an internal voltage reduction transformer.
Power supplies can be designed to be lightweight and low profile for consumers as well as for industrial use. Good power supplies use surface mount technology and through-hole components, providing maximum efficiency and high reliability. A highly efficient power supply should have universal AC input, be self contained and hermetically sealed (airtight), have product safety certification (UL, CUL, TUV, CB and CE listings), and have a temperature range of -20oC to +85oC. Power supplies should also come with over voltage, over current, over load, short circuit and open circuit protection and thermal fuse protection. Features such as auto-recovery start up and LED indicators are also included in certain power supplies.
About the Author
Find all types of power supplies here http://www.sunpower-uk.com
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How to install a Power Supply