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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Earlier computers requiring 3.

Designed for dual CPUs, and quad double slot video cards. Many power supplies create their 3. This is a minor revision from March This the unofficial name given to the later revisions of the v2. Computer power supplies may have short circuit protection, overpower overload protection, over-voltage protection, under-voltage protection, over-current protection, and over-temperature protection.

Any other onboard interfaces such as serial and parallel ports had to be connected via flying leads to connectors which were mounted either on epa12v provided by the case or brackets placed in unused expansion slot positions.

For instance, ATX 2. All other voltages are generated by voltage regulator 922 on the motherboard.

It was used only on high-end Athlon MP motherboards. The general configuration is a double-pole latching mains voltage switch with the four pins connected to wires from a four-core cable. Once the output power is ready to use, the Power Good signal tells the digital circuitry that it can begin to operate.

The gains of using an efficient power supply are more substantial in computers that use a lot of power. Later regulators managed all the 3.

Power supply unit (computer) – Wikipedia

Climate Savers Computing Initiative promotes energy saving and reduction of greenhouse gas emissions by encouraging development and use of more efficient power supplies. A power supply that is self-certified by its manufacturer may claim output ratings double or more than what is actually provided. 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.


The Reality of the Resistance”. Voltage drop on connectors forced the designers to place such buck converters next to the device. The power on the 3. Other minor changes were introduced. Although a power supply with a larger than needed power rating will have an extra margin of safety against overloading, such a unit is often less efficient and wastes more electricity at lower loads than a more appropriately sized unit.

It is specified in Revision 1. The desktop computer power supply changes alternating current from a wall socket to low-voltage direct current to operate the processor and peripheral devices. Calvert; University of Denver.

The psec then refuse non-matching adapter. These power supplies were generally not capable of power saving modes such as standby or “soft off”, or scheduled turn-on power controls. Introduced in April a month after 2.

Archived from the original PDF on October 21, The curve varies from model to model examples of how this curve looks can be seen on test reports of energy efficient models found on the 80 PLUS website. As transistors become smaller on chips, it becomes preferable to operate them on lower supply voltages, and the lowest supply voltage is often desired by the densest chip, the central processing eps2v.

All articles with unsourced statements Articles with unsourced statements from September Articles containing potentially dated statements from January All articles containing psec dated statements Articles with unsourced statements from December Commons category link is on Wikidata.

Connecting the unit configured for the lower range to a higher-voltage grid usually resulted in an immediate permanent damage. The e;s12v rails involved are labeled on the power supply with a combined current limit.

First-generation microcomputer wpec home computer power supply units used a heavy step-down transformer and a linear power supply, as used, in for example, the Commodore PET introduced in The requirement was later deleted from version 2. Spe new design is dubbed “HPTX” and is 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.

  ASTM D2024 PDF

ATX uses one large, keyed connector which can not be connected incorrectly. If using an ATX PSU for purposes other than powering an ATX motherboard, power can be sped turned on it is always partly on to operate “wake-up” devices by shorting the “power-on” pin on the ATX spex pin 16, green wire to a black wire groundwhich is what the power button on an ATX system does.

Archived from the original on The ATX connector provides multiple wires and power connections for the 3. Spev is a minor revision from June A modular power supply provides a detachable cable system, offering the ability to remove unused connections at the expense of a small amount of extra electrical resistance introduced by the additional connector.

Power supply unit (computer)

Screw holes not completely compatible with some ATX cases. SFX is merely a design for a power supply casing, with the power specifications almost identical to ATX. Opposite the wire bundle is the back face of the power supply, with an air vent and an IEC C14 connector to supply AC power.

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. This pinout on the motherboard connector is as follows when viewing the motherboard from above:.

ATX – Wikipedia

From Wikipedia, the free encyclopedia. The power supply’s 9 to the motherboard was changed from the older AT and LPX standards; AT and LPX had two similar connectors that could be accidentally interchanged by forcing the different keyed connectors into place, usually causing short-circuits and irreversible damage to the motherboard the rule of thumb for safe operation was to connect the side-by-side connectors with the black wires together.

InFoxconn unveiled a Foxconn F1 motherboard prototype, which has the same width as a standard ATX motherboard, but an extended Misquoted and misunderstood” PDF.