3 days to save on inspiring gift experiences.How PC Power Supplies Work If there is any one component that is absolutely vital to the operation of a computer, it is the power supply. Without it, a computer is just an inert box full of plastic and metal. The power supply converts the alternating current (AC) line from your home to the direct current (DC) needed by the personal computer. In this article, we'll learn how PC power supplies work and what the wattage ratings mean. In a personal computer (PC), the power supply is the metal box usually found in a corner of the case. The power supply is visible from the back of many systems because it contains the power-cord receptacle and the cooling fan. What is computing power? Does powering down your computer wear it down? How does a computers uninterruptible power supply work? Power supplies, often referred to as "switching power supplies", use switcher technology to convert the AC input to lower DC voltages.

The typical voltages supplied are: The 3.3- and 5-volts are typically used by digital circuits, while the 12-volt is used to run motors in disk drives and fans. The main specification of a power supply is in watts. ac unit running but not cooling houseA watt is the product of the voltage in volts and the current in amperes or amps. ac problems outside unit not runningIf you have been around PCs for many years, you probably remember that the original PCs had large red toggle switches that had a good bit of heft to them. commercial ac unit for saleWhen you turned the PC on or off, you knew you were doing it. These switches actually controlled the flow of 120 volt power to the power supply. ­­Today you turn on the power with a little push button, and you turn off the machine with a menu option.

These capabilities were added to standard power supplies several years ago. The operating system can send a signal to the power supply to tell it to turn off. The push button sends a 5-volt signal to the power supply to tell it when to turn on. The power supply also has a circuit that supplies 5 volts, called VSB for "standby voltage" even when it is officially "off", so that the button will work. See the next page to learn more about switcher technology.We have 4 ways to help you: DIY Support Tools ConnectXpress™ Connector Guides Drivers & Manuals Training Live Chat Need help? It is a quick and convenient way to chat with one of our technical experts without having to stop what you are working on to place a phone call. To help us more effectively help you, please be ready with product number, make and model of any equipment you are connecting, operating system (if applicable), etc. The more info you can provide, the faster we can help! Email Us Please select the question below that best describes your situation to get started:       Other Ways to Get In Touch You can also contact us directly Monday through Friday 8:30am—6:30pm ET 800.331.2841 Text "C2G" plus your Q. to 57682 — details

Checking the power source Power supply fan is noisy or having interference Power supply light does not turn on or power supply fan does not spin Testing the power supply separately from the system Power supply light is on and flashes Ordering a replacement power supply This document pertains to HP and Compaq desktop computers. Figure : Power supply light If the small light on the power supply does not turn on and the fan in the power supply does not spin, and it looks like there is no power, see Power supply light does not turn on. If the small light on the power supply turns on, see Power supply light on or flashes. Computer Does Not Start (Windows 10, 8) Windows 7 Does Not Start Computer Does Not Start (Windows Vista) Resolving Startup Problems (Windows XP, Me, and 98) Checking the power source Figure : Power supply vent If you have tried all of the previous steps and the power supply light remains off, use the steps in the next section, Power supply light comes on or flashes, to reseat the cables and check the power switch connector.

If the power supply fan spins when the computer is turned on but the light does not turn on, see Power supply light comes on or flashes. Figure : Commercial PSUs Figure : Consumer PSUs Figure : Example of common power connections If the LED is on solid If the LED is still flashing If the LED light is now off Figure : Find the Spare Number or Part Number If the part number is not listed on the power supply or is unreadable, follow these steps to use the HP PartSurfer website to find a list of power supplies that are compatible with your computer. If you use a power supply that is not listed on HP PartSurfer for that computer as a replacement, you risk voiding the computer’s warranty or damaging the computer. Open the HP Parts Ordering website (in English). If necessary, select your country/region and language in the upper right corner of the page. Figure : Example of a power supply part listed on the HP Parts Ordering website 2-Year Drops & Spills Protection

3-Year Drops & Spills Warranty 2-Year PC Peripheral Protection Plan 3-Year PC Peripheral Protection Plan 6 used & new from & FREE Shipping on orders over $49. Sold by Sentey and Fulfilled by Amazon. Fulfillment by Amazon (FBA) is a service we offer sellers that lets them store their products in Amazon's fulfillment centers, and we directly pack, ship, and provide customer service for these products. Something we hope you'll especially enjoy: FBA items qualify for FREE Shipping and . If you're a seller, Fulfillment by Amazon can help you increase your sales. We invite you to learn more about Fulfillment by Amazon Sentey XPP725-HS Xplus Power Supply 725w Pc Computer ATX Desktop Power Supply, 140mm Sleeve Bearing Fan, Quiet Fan, Sleeved Cables, 115/230 AC Power, SLI Ready FREE Shipping on orders over $49. DetailsWD Blue 1TB SATA 6 Gb/s 7200 RPM 64MB Cache 3.5 Inch Desktop Hard Drive (WD10EZEX) FREE Shipping. DetailsCooler Master Hyper 212 EVO - CPU Cooler with 120mm PWM Fan (RR-212E-20PK-R2) FREE Shipping on orders over $49.

5.9 x 6.3 x 3.4 inches 4 pounds (View shipping rates and policies) 4.4 out of 5 stars #6 in Computers & Accessories > Computer Components > Power Supplies Product Warranty: For warranty information about this product, please click here Would you like to update product info or give feedback on images? Would you like to tell us about a lower price? See questions and answers 5 star75%4 star12%3 star3%2 star1%1 star9%See all 729 customer reviewsTop Customer ReviewsWorks great.The power supply that is good for what it is.. /channel/UCn_iuy4-WVrPZGeVVSvdCRQThe reason of giving this power supply this rating is because overall this is a decent unit. It works as it claims; it has the connectors that are needed. I like it because it has the big 140mm fan that keeps my system quiet as that is what is really important. I feel that if there is something else needed, then a different power supply should be purchased as there are many to choose from.With this one, I do wish that it was plug and play cording system, but if I wanted that, then I can choose a power supply that has that.

But for this one, having the wires sleeved in mesh and it's rated at 725w, I have no complaints for this power supply.As of now, it works and if that changes soon, I will update my review on this.Pros:-Rated at 725w-Big 140mm cooling fan-2 PCIe power connectors for 2 video cards-On/Off switch to cut power without unplugging power cordCons:-Wish it was plug and play cording system-----------------------------------------------------------This product was received for my honest review.Fantastic PSU for the price. Extremely happy with it. Great cheap power supply Sentey® Power Supply 725w Xpp725-hs / Computer Power Supply Review My old power supply was having a huge ball bearing failure, and I needed a replacement FAST! I got the Sentey® Power Supply 725w Xpp725-hs sent to me and did a video review of the product and process. It was an easy, simple and straightforward process, and I feel so comfortable doing more upgrades to my computer.I've installed ram before, but nothing like a power supply with so many connections, LOL.