Archived from the original PDF on Original AT cases flat case style have an integrated power switch that protruded from the power supply and sits flush with a hole in the AT chassis. It was used only on high-end Athlon MP motherboards. Views Read Edit View history. A number of manufacturers have added one, two or three additional expansion slots at the standard 0.
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Main changes from AT and LPX designs[ edit ] Power switch[ edit ] Original AT cases flat case style have an integrated power switch that protruded from the power supply and sits flush with a hole in the AT chassis. The general configuration is a double-pole latching mains voltage switch with the four pins connected to wires from a four-core cable. The wires are either soldered to the power button making it difficult to replace the power supply if it failed or blade receptacles were used.
Typical ATX 1. From left to right, the connectors are pin motherboard, 4-pin "P4 connector", fan RPM monitor note the lack of a power wire , SATA power connector black , "Molex connector" and floppy connector. Interior view in an ATX power supply An ATX power supply is typically controlled by an electronic switch connected to the power button on the computer case and allows the computer to be turned off by the operating system. In addition, many ATX power supplies have an equivalent-function manual switch on the back that also ensures no power is being sent to the components.
When the switch on the power supply is turned off, however, the computer cannot be turned on with the front power button. ATX uses one large, keyed connector which can not be connected incorrectly. The new connector also provides a 3. A minimum load on one or more voltages may be required varies by model and vendor ; the standard does not specify operation without a minimum load and a conforming PSU may shut down, output incorrect voltages, or otherwise malfunction, but will not be hazardous or damaged.
It was thought that in this configuration, cooling of the processor would be achievable without the need of an active heatsink. A supplemental 6-pin AUX connector providing additional 3.
ATX12V 1. However, some early model Athlon XP and MP boards including some server boards and later model lower-end motherboards do not have the 4-pin connector as described below. For instance, ATX 2. The power on the 3. This voltage was required by the ISA bus, which is no longer present on almost all modern computers. This standard introduced some changes, mostly minor. Defined minimal required PSU efficiencies for light and normal load.
Defined acoustic levels. Introduction of Serial ATA power connector but defined as optional. ATX12V 2. The power on 3. The ATX motherboard connector was extended to 24 pins. The extra four pins provide one additional 3. The power supply is required to include a Serial ATA power cable. Many other specification changes and additions ATX12V v2.
Other minor changes were introduced. The power was slightly increased on all rails. Efficiency requirements changed. ATX12V v2. It is specified in Revision 1. It was motivated by stricter power efficiency requirements by California Energy Commission going into effect in This greatly simplifies power supplies, but moves DC-to-DC conversion and some connectors to the motherboard instead. Notably, SATA power connectors , which include 3.
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Tukasa For these cards, supplementary power was delivered through a standard 4-pin peripheral or floppy power connector. ATX allowed each motherboard manufacturer to put these ports in a rectangular area on the back of the system with an arrangement they could define themselves, though a number of general patterns depending on what ports the motherboard offers have been followed by most manufacturers. Introduced in April a month after 2. SFX is merely a design for a power afx12v casing, with the power specifications almost identical to ATX.
INTEL ATX12V 2.31 PDF
Модуль APFC блока питания отлично справляется со своей задачей. Уже при потребляемой мощности в Вт коэффициент PFC преодолел отметку 0,9, максимальное же значение 0,97 было зафиксировано при нагрузке в Вт. Система охлаждения и температурный режим Косвенно оценить уровень шума устройства можно по скорости вращения вентилятора при разной величине нагрузки. Интервал времени, после которого производилось измерение скорости вращения и последующее увеличение мощности, составлял около двадцати минут. Результаты измерения отмечены точками на графике.
Стандарт АТХ блока питания
Fausar ATX12V 2. ATX allowed each motherboard manufacturer to put these ports at1x2v a rectangular area on the back of the system with an arrangement they could define themselves, though a number of general patterns depending on what ports the motherboard offers have been followed by most manufacturers. Efficient power supplies also save money by wasting less power; as a result they use less electricity to power the same computer, inte, they emit less waste heat which results significant energy savings on central air conditioning in the summer. Other minor changes were introduced. The gains of using an efficient power supply are more substantial in computers that use a lot of power. The pinout on the motherboard connector is as follows when viewing the motherboard from above:.
Power Supply Selector