atx电源的标准对比（Standard comparison of ATX power supplies）.docVIP

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atx电源的标准对比（Standard comparison of ATX power supplies）.doc

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atx电源的标准对比（Standard comparison of ATX power supplies）

atx电源的标准对比（Standard comparison of ATX power supplies） Standard for computer switching power supply Standard for ATX power supplies ATX power supply is designed and manufactured according to the ATX standard, while the ATX standard is closely related to the standards of the computer and the whole machine. Compared with the early AT structure of the computer, the ATX structure of the computer in many improvements, ATX power changed obviously, such as the abolition of the power switch on the power supply and the necessary AT control over the mainboard power switch, and the power also added a standby circuit provides the voltage to the power supply main circuit and the motherboard to implement power wake-up functions, in addition, ATX power is first introduced into the output voltage of +3.3V, and the motherboard connection interface has also been significantly improved. From the beginning of the original ATX1.0, ATX standard has also been a number of changes and improvement, has launched ATX2.03 and ATX12V two standards, according to the ATX ATX power supply standards also gradually mature, so the understanding of ATX standard can help people know the correct power: The difference between 1. ATX1.1 to ATX2.0 standard: The wind road to the internal ATX power supply has been adjusted, the original fan oriented chassis instead of the aspirated exhaust air to the outside of the chassis. The PS_ON#, PWR_OK, and +5VSB power specifications are supplemented, and the range of the +3.3VDC terminal voltage changes and the soft power control signal are redefined. Add optional fan auxiliary power, fan monitoring, IEEE1394 voltage, 3.3V remote control voltage and other standards. The definition of the internal wiring color is supplemented. The difference between 2. ATX2.00 and 2.01: The definition of the I/O interface of the chassis and mainboard is modified and supplemented. The +5VSB output current is increased from the original 10mA to 720mA, which improves the capability of the