Nokia popport, data cable, USB, SmartPhones, Cell Phones PW. Panasonic, Samsung. Serial ATA SATA, abbreviated from Serial AT Attachment is a computer bus interface that connects host bus adapters to mass storage devices such as hard disk drives. Comp. TIA A Cert Guide Power Supplies and System Cooling Foundation Topics. This chapter delves into how power is conveyed to the computer, which power supply to select depending on your configuration and needs, how to install and troubleshoot power supplies, and how to cool the system. It covers Comp. TIA A 2. Comp. TIA A 2. 20 8. This chapter is from the book This chapter covers the following subjects Power SuppliesThis section describes the device that transforms AC power from the wall outlet into DC power that your computer can use. It also describes the various form factors and voltage levels, and how to protect your power supply. Troubleshooting Power ProblemsThis section demonstrates how to troubleshoot complete failure and intermittent power supply problems that you might encounter. Pin Serial Ata Slimline Power Connector' title='6-Pin Serial Ata Slimline Power Connector' />Complete pinout for an SATA 15 pin power connector. This is one of two current standard power connectors designed for peripheral devices. BUILDING THE WORLDS MOST POWERFUL VMEVPX RESOURCE. BEHLMAN ELECTRONICS Orbit Power Group broke through the VPX power ceiling with the Behlman 1000. Avoiding Power Supply HazardsThis section has guidelines for avoiding shock and fire hazards when working with power supplies. Power Protection TypesIn this section you learn about devices that can protect your computer from over and under voltage issues. These include surge protectors, uninterruptible power supplies, and line conditioners. System CoolingThis last section describes the various ways to cool your system, including fans and liquid cooling, and demonstrates how to monitor the system temperature. Clean, well planned power is imperative, from the AC outlet to the electrical protection equipment to the power supply. Many of the issues that you see concerning power are due to lack of protection or improper planning, and as such you will see several questions on the A exams regarding this subject. In this chapter we delve into how power is conveyed to the computer, which power supply to select depending on your configuration and needs, how to install and troubleshoot power supplies, and how to cool the system. Power Supplies. Power issues are largely ignored by most computer users, but a properly working power supply is the foundation to correct operation of the system. When the power supply stops working, the computer stops working, and when a power supply stops functioning properlyeven slightlyall sorts of computer problems can take place. From unexpected system reboots to data corruption, from unrecognized bus powered USB devices to system overheating, a bad power supply is bad news. The power supply is vital to the health of the computer. So, if your computer is acting sick, you should test the power supply to see if its the cause. To keep the power supply working properly, use surge suppression and battery backup UPS units. The power supply is really misnamed It is actually a power converter that changes high voltage alternating current AC to low voltage direct current DC. There are lots of wire coils, capacitors, and other components inside the power supply that do the work, and during the conversion process, a great deal of heat is produced. Most power supplies include one or two fans to dissipate the heat created by the operation of the power supply however, a few power supplies designed for silent operation use passive heat sink technology instead of fans. On power supplies that include fans, fans also help to cool the rest of the computer. Figure 4 1 shows a typical desktop computers power supply. Power Supply Ratings. Power supply capacity is rated in watts, and the more watts a power supply provides, the more devices it can safely power. You can use the label attached to the power supply, shown in Figure 4 2, to determine its wattage rating and see important safety reminders. Typically, power supplies in recent tower case upright case machines use 4. Power supplies used in slimline desktop computers have typical ratings of around 2. The power supply rating is found on the top or side of the power supply, along with safety rating information and amperage levels produced by the power supplys different DC outputs. How can you tell whether a power supply meets minimum safety standardsLook for the appropriate safety certification mark for your country or locale. For example, in the U. S. and Canada, the backward UR logo is used to indicate the power supply has the UL and UL Canada safety certifications as a component the familiar circled UL logo is used for finished products only. Use the following methods to determine the wattage rating needed for a replacement power supply Whip out your calculator and add up the wattage ratings for everything connected to your computer that uses the power supply, including the motherboard, processor, memory, cards, drives, and bus powered USB devices. If the total wattage used exceeds 7. Check the vendor spec sheets for wattage ratings. If you have amperage ratings instead of wattage ratings, multiply the amperage by the volts to determine wattage and then start adding. If a device uses two or three different voltage levels, be sure to carry out this calculation for each voltage level, and add up the figures to determine the wattage requirement for the device. Use an interactive power supply sizing tool such as the calculators provided by e. Xtreme Outervision www. PC Power and Cooling www. Table 4 1 provides calculations for typical compact desktop and performance desktop systems. Table 4 1. Calculating Power Supply Requirements. Micro. ATX System with Integrated Video. Full Size ATX System with SLI Dual Graphics CardsComponents. Wattage. Components. Wattage. AMD A8 3. L2 cache6. 5Intel Core i. X Extreme Edition 6 cores with L3 cache1. ATX motherboard. 60. ATX motherboard. 10. GB RAM6. 08. GB RAM1. Rewritable DVD drive. Rewritable Blu ray drive. SATA hard disk. 20. SATA hard disk. 20. Two case fans. 6Three case fans. CPU fan. 3CPU fan. Integrated graphics in CPUHigh end SLI video cards 22. Estimated wattage. Estimated wattage. Minimum power supply size recommended 8. Minimum power supply size recommended 8. Multivoltage Power Supplies. Most power supplies are designed to handle two different voltage ranges 1. V6. 0Hz. 22. 02. V5. Hz. Standard North American power is now 1. V6. 0Hz cycle AC the previous standard was 1. V. The power used in European and Asian countries is typically 2. Sindrome Hiperosmolar No Cetosico Pdf on this page. V5. 0Hz AC previously 2. V. Power supplies typically have a slider switch with two markings 1. North American 1. V6. 0Hz. AC and 2. X3 Editor 2. European and Asian 2. V5. 0Hz AC. Figure 4 3 shows a slider switch set for correct North American voltage. Scan Multipage Pdf Irfanview. If a power supply is set to the wrong input voltage, the system will not work. Setting a power supply for 2. V with 1. 101. 20. V current is harmless however, feeding 2. V into a power supply set for 1. V will destroy the power supply, and possibly other onboard hardware. Figure 4 3. A typical power supplys sliding voltage switch set for correct North American voltage 1. V. Slide it to 2. V for use in Europe and Asia. The onoff switch shown in Figure 4 3 controls the flow of current into the power supply. It is not the system power switch, which is located on the front of most recent systems and is connected to the motherboard. When you press the system power switch, the motherboard signals the power supply to provide power. Power Supply Form Factors and Connectors. When you shop for a power supply, you also need to make sure it can connect to your motherboard. There are two major types of power connectors on motherboards 2. ATX family. 24 pin, used by recent ATXBTX motherboards requiring the ATX1. V 2. 2 power supply standard. Some high wattage power supplies with 2.