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Power Supply

A power supply is a hardware component that supplies power to an electrical device. It receives power from an electrical outlet and converts the current from AC (alternating current) to DC (direct current), which is what the computer requires. It also regulates the voltage to an adequate amount, which allows the computer to run smoothly without overheating. The power supply an integral part of any computer and must function correctly for the rest of the components to work.

You can locate the power supply on a system unit by simply finding the input where the power cord is plugged in. Without opening your computer, this is typically the only part of the power supply you will see. If you were to remove the power supply, it would look like a metal box with a fan inside and some cables attached to it. Of course, you should never have to remove the power supply, so it's best to leave it in the case.

While most computers have internal power supplies, many electronic devices use external ones. For example, some external hard drives have power supplies that reside outside the main unit. These power supplies are connected directly to the cable that plugs into the wall. They often include another cable that connects the device to the power supply. Some power supplies, often called "AC adaptors," are connected directly to the plug (which can make them difficult to plug in where space is limited). Both of these designs allow the main device to be smaller or sleeker by moving the power supply outside the unit.

Since the power supply is the first place an electronic device receives electricity, it is also the most vulnerable to power surges and spikes. Therefore, power supplies are designed to handle fluctuations in electrical current and still provide a regulated or consistent power output. Some include fuses that will blow if the surge is too great, protecting the rest of the equipment. After all, it is much cheaper to replace a power supply than an entire computer. Still, it is wise to connect all electronics to a surge protector or  keep them from being damaged by electrical surges.

  • Adjustable Regulated Power supply

    Xforce Amps is the FIRST TO OFFER AN ADJUSTABLE UNIT !! ,They are available in 75a, 100a, 150a, 200a, 250a, 300a, 350a, 400a, 450a, 500a, 550a, 600a, 650a, 700a, 750a, And Bigger. As STANDARD, AND AT NO EXTRA CHARGE, THEY ALL HAVE A Sweet Blue Lighted...

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  • This 60A power supply is designed to power 12VDC devices such as cell phones, CB radios, scanners, HAM radios, atc.

    Power Supply AC/DC 60 amp,PSL642X

    Built-in Cooling FanCurrent Voltage MetersInput: 115V AC, 60HzOutput: 13.8V DC60 AMP Constant/ 65 AMP SurgePowers 12V DC Devices such as Cellular Phones, CB Radios, Scanners, HAM Radios, Autosound Systems,etc.4 Roller CastersDual Pair Screw-On Terminal...

    $260.95
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  • PowerBass ,100-amp AC to DC power supply

    PowerBass ,100-amp AC to DC power supply

    RUN your big box on it Like ALL YOUR 4pill AMPTEXAS STAR,XFORCE AMPS ANY 4pill ampsupplies 12-volt power from a standard 120-volt AC outletincludes remote-mount LED voltage meterrun your high-powered car audio system in your garage or shoplink four units...

    $245.00
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  • Pyramid PS12 12 Amp Power Supply

    Perfect for Home, Shop and HobbyistInput: 115V AC, 60Hz, 250 WattsOutput: 13.8V DC10 AMP Constant/12 AMP SurgePowers Cellular Phones,12V DC CB Radios, Scanners, HAM Radios, Autosound SystemsScrew Terminal ConnectorsElectronic Overload Protection w/ Auto...

    $83.99
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  • Pyramid PS14 14 Amp Power Supply

    Perfect for Home, Shop and HobbyistInput: 115V AC, 60Hz, 270 WattsOutput: 13.8V DC12 AMP Constant/14 AMP SurgePowers Cellular Phones,12V DC CB Radios, Scanners, HAM Radios, Autosound SystemsScrew Terminal ConnectorsElectronic Overload Protection w/...

    $83.99
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  • Pyramid PS21 20 Amp Power Supply

    Perfect for Home, Shop and HobbyistInput: 115V AC, 60Hz, 450 WattsOutput: 13.8V DC18 AMP Constant/20 AMP SurgePowers Cellular Phones,12V DC CB Radios, Scanners, HAM Radios, Autosound Systems, etc.Screw Terminal ConnectorsCrowbar Over-Voltage...

    $139.00
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  • Pyramid PS26 25 Amp Power Supply

    Perfect for Home, Shop and HobbyistBuilt-in Cooling FanInput: 115V AC, 60Hz, 500 WattsOutput: 6~15V DC(Adjustable)22 AMP Constant/25 AMP SurgePowers 6~15V DC Devices such as Cellular Phones, CB Radios, Scanners, HAM Radios, Autosound Systems, etc.Screw...

    $165.00
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  • Pyramid PS3 3 Amp Power Supply

    Features:Perfect for Home, Shop and HobbyistInput: 115V AC, 60Hz, 50 WattsOutput: 13.8V DC2.5 AMP Constant/3 AMP SurgePowers Cell Phones, 12V DC CB Radios,Scanners,etc.Screw Terminal ConnectorsElectronic Overload Protection w/ Auto ResetShort Circuit...

    $39.00
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  • Pyramid PS36 35 Amp

    Perfect for Home, Shop and HobbyistBuilt-in Cooling FanInput: 115V AC, 60Hz, 600 WattsOutput: 12~15V DC(Adjustable)32 AMP Constant/35 AMP SurgePowers 12V DC Devices such as Cellular Phones, CB Radios, Scanners, HAM Radios, Autosound Systems,etc.Screw...

    $185.99
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