ATX (Advanced Technology eXtended) is a motherboard configuration specification developed SFX; TFX; WTX; AMD GES; 5 EPS12V ATX also made the PS/2-style mini-DIN keyboard and mouse connectors Power Supply Design Guide, v ยท EPS12V Power Supply Design Guide v Insignia W ATX12V /EPS12V Power Supply: Designed to power select computers; W continuous power; ATX12V /EPS12V Specifications. We’ll answer PSU spec questions of modular vs. non-modular PSUs, EPS12V vv The EPS (Entry-level Power Supply) standard is.

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Originally, the motherboard was powered by one pin connector. As of ATX 2. This revision became effective in February Numbering of the ATX revisions may be a little confusing: In designs using identical chokes, the pulse width manage the ratio.

The sec power consumption is a sum of the power ratings for all of the components of the computer system that draw on the power supply.

Any other onboard interfaces such as serial and parallel ports had to be connected via flying leads to connectors which were mounted either on spaces provided by the case or brackets placed in unused expansion slot positions. From Wikipedia, the free encyclopedia. Efficient power supplies also save money by wasting less power; as a result they use less electricity to power the same computer, and they emit less waste heat which results significant energy savings on central air conditioning in the summer.

InFoxconn unveiled a Foxconn F1 motherboard prototype, which has spsc same width as a standard ATX motherboard, but an extended By adjusting the switching time of the transistor, the output voltage can be closely controlled without dissipating energy as heat in a linear regulator.

The Reality of the Resistance”. A number of manufacturers have added one, two or three additional expansion slots at the standard 0.

Unlike a fuse or circuit breakerthese limits reset as soon as the overload is removed. The switched-mode supply uses a ferrite-cored high frequency transformer and power transistors that switch thousands of times per second.


In other projects Wikimedia Commons. The most recent ATX motherboard specification is version 2. In this case, loading the 3.

Power supply unit (computer) – Wikipedia

This is a minor revision from August The main issues to consider eps1v2 the following:. The standby power source was a small linear power supply with conventional transformer, which was later changed to a switching power supply, sharing some components of the main unit due to cost- and energy-saving requirements. Several direct-current voltages are required, and they must be regulated with some accuracy to provide stable operation of the computer.

If using an ATX PSU for purposes other than powering an ATX motherboard, power can be fully turned on it is always partly on to operate “wake-up” devices by shorting the “power-on” pin on the ATX connector pin 16, green wire to a black wire ground22 is what the power button on an ATX system does. Introduced in April a month after 2.

The gains of using an efficient power supply are more substantial in computers that use spex lot of power. The EPS standard provides a more powerful and stable environment for critical server-based systems and applications.

The laptop then refuse non-matching adapter. Originally at the time of ATX 2. Computer power supplies may have short circuit protection, overpower overload protection, over-voltage protection, under-voltage protection, over-current protection, and over-temperature protection.

The ATX connector provides multiple wires and power connections for the 3.

Several ATX-derived designs have been specified that use the same power supply, mountings and basic back panel arrangement, but set different standards for the size of the board and number of expansion slots. This article is about the computer form factor. High-performance video card power demands dramatically increased during the s and some high-end graphics cards have power demands eps2v exceed AGP or PCIe slot capabilities.

This protects against system performance degradation, and against power supply overloading. An additional wire referred to as ‘Power Good’ 22 used to prevent digital circuitry operation during the initial milliseconds of power supply turn-on, where output voltages and currents are rising but not yet sufficient or stable for proper device operation.


Power supply unit (computer)

The requirement was later deleted from version 2. Low-quality power supply manufacturers sometimes take advantage of this overspecification by assigning unrealistically high power supply ratings, knowing that very few customers fully understand power supply ratings. A sufficiently large current can cause serious damage in the event of a short circuitor can melt the wire or its insulation in the case of a fault, or potentially start a fire or damage other components.

Archived from the original PDF on Power supplies label their total power output, and label how this is determined by the electrical current limits for each of the voltages supplied.

In ATX-style systems, the front-panel power switch provides only a control signal to the power supply and does not switch the mains AC voltage. Some proprietary brand-name systems require a matching proprietary power supply, but some of them may also support standard and interchangeable power supplies. Using higher quality electrical components at less than their maximum ratings or providing better cooling can contribute to a higher MTBF rating because lower stress and lower operating temperatures decrease component failure rates.

Some power supplies come soec sleeved cables, which besides being more aesthetically pleasing, also make wiring easier and have a less detrimental effect on airflow. Computing portal Electronics portal. 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.