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ATX电源(国外英文资料).doc

发布:2017-06-08约2.01万字共21页下载文档
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ATX电源(国外英文资料) Knowledge of ATX power supply and troubleshooting The power supply is a small percentage of the price of a PC, but it is about the quality and longevity of the machine. In order to ensure the quality of the products, the machines attach great importance to the configuration of the power supply. So how do you select a PC, how do you choose the power source, and how do you exclude the various problems that arise in the use of the PC? The quality of the ATX power supply There is a big difference in performance for ATX power producers. Bad power is a PC disaster, and DIYer has to keep his eyes open when choosing. 1. The power The actual power of a typical multimedia mainframe computer is less than 100W. But usually need to keep the whole machine for a certain allowance, the aim is to meet the future need to add new equipment, because the computer is started need power are larger than usual. Therefore, the actual power supply of 200W will meet the requirements. In general, the power of the model and the real power of the manufacturer itself is very clear, but dont take it for granted when consumers are buying power to model behind the Numbers. For example, some people think that the power of the yh-2503c power supply is 250W, but it is actually 200W instead of 250W. Should also pay attention to the differences in power index name, there are average power, maximum power, a variety of power rating, see the specific is which one. Output voltage stability ATX power supply is another important parameter is the output voltage error range, usually to + 5 V and + 3.3 V and + 12 V voltage error rate for less than 5%, to the margin of error - 5 V and 12 V voltage requirements for less than 10%. The output voltage is unstable, or the ripple coefficient is large, which is the main cause of system failure and hardware damage. The main power source of the ATX power source is based on the pulse width modulation (PWM) principle, which is called switching power supply. The
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