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  2. Power supply unit (computer) - Wikipedia

    en.wikipedia.org/wiki/Power_supply_unit_(computer)

    A power supply unit (PSU) converts mains AC to low-voltage regulated DC power for the internal components of a desktop computer. Modern personal computers universally use switched-mode power supplies. Some power supplies have a manual switch for selecting input voltage, while others automatically adapt to the main voltage.

  3. ATX - Wikipedia

    en.wikipedia.org/wiki/ATX

    ATX. An ATX motherboard. Comparison of some common motherboard form factors (pen for scale) ATX (Advanced Technology Extended) is a motherboard and power supply configuration specification, patented by David Dent in 1995 at Intel, [1] to improve on previous de facto standards like the AT design. It was the first major change in desktop computer ...

  4. 80 Plus - Wikipedia

    en.wikipedia.org/wiki/80_Plus

    80 Plus. Logo. 80 Plus (trademarked 80 PLUS) is a voluntary certification program launched in 2004, intended to promote efficient energy use in computer power supply units (PSUs). Certification is acquirable for products that have more than 80% energy efficiency at 20%, 50% and 100% of rated load, and a power factor of 0.9 or greater at 100% load.

  5. Power supply - Wikipedia

    en.wikipedia.org/wiki/Power_supply

    A power supply or Power Supply Unit (PSU), is an electrical device that supplies electric power to an electrical load. The main purpose of a power supply is to convert electric current from a source to the correct voltage, current, and frequency to power the load. As a result, power supplies are sometimes referred to as electric power ...

  6. PC Power and Cooling - Wikipedia

    en.wikipedia.org/wiki/PC_Power_and_Cooling

    FirePower Technology (2014–present) PC Power and Cooling (stylized as PC Power & Cooling), a subsidiary of FirePower Technology, is an American manufacturer of computer power supplies based in Carlsbad, California. The company was established by Doug Dodson in 1985. In 2007, the company was acquired by OCZ Technology.

  7. IBM Personal Computer AT - Wikipedia

    en.wikipedia.org/wiki/IBM_Personal_Computer_AT

    The IBM PC AT came with a 192-watt switching power supply, significantly higher than the 130-watt XT power supply. According to IBM's documentation, in order to function properly, the AT power supply needed a load of at least 7.0 amperes on the +5 V line and a minimum of 2.5 amperes on its +12 V line.