教你认识计算机硬件及相关参数的识别(10--电源篇)（Teach you how to recognize computer hardware and related parameters (10-- power section)）.docVIP

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教你认识计算机硬件及相关参数的识别(10--电源篇)（Teach you how to recognize computer hardware and related parameters (10-- power section)）.doc

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教你认识计算机硬件及相关参数的识别(10--电源篇)（Teach you how to recognize computer hardware and related parameters (10-- power section)）

教你认识计算机硬件及相关参数的识别(10--电源篇)（Teach you how to recognize computer hardware and related parameters (10-- power section)） First, what is the power supply?. Simply put, the power supply is the equipment responsible for powering the components in the host computer. Two, PC power source originator - AT power specifications AT power supply belongs to the PC power veteran, power is generally 150W - 250W, a total of four output (5V, 12V), the other board to provide a P.G (Power Good) signal. The output line is two 6 core plugs and a few 4 core plugs, and the two 6 core sockets supply power to the main board. The AT power supply is switched off by means of cut off, that is, hard shutdown. Before ATX power does not appear, from 286 to 586 by AT computer power to dominate the political arena. At present, AT power has exited the market, even in the old computer market has also been difficult to see its figure. -------------------------------------------------------------------------------- Three -, AT power specification evolution - ATX power specification The ATX specification is the new motherboard structure standard developed by Intel in 1995. It is the abbreviation of Extend (AT). It can be translated into AT expansion standard, and ATX power supply is designed according to this specification. Compared with the AT power supply, ATX power supply size did not change much, and its AT power most significant difference is that the former is cancelled, traditional electric switches, rely on +5VSB, PS-ON control signal to achieve the combination of power on and off. Class ATX power supply has six outputs, namely +5V, -5V, +12V, -12V, +3.3V and +5Vsb. +5VSB is the power for the host system in ATX standby state, and power supply closed automatic management and remote wake-up communication circuit, and a controlled start in standby state, the output voltage is 5V high, the use of purple line drawn by the ATX 9 pin plug. PS-ON for the host power supply or network computer remote wake-up