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  2. Power supply unit (computer) - Wikipedia

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

    For example, a 900-watt power supply with the 80 Plus Silver efficiency rating (which means that such a power supply is designed to be at least 85% efficient for loads above 180 W) may only be 73% efficient when the load is lower than 100 W, which is a typical idle power for a desktop computer. Thus, for a 100 W load, losses for this supply ...

  3. Switched-mode power supply - Wikipedia

    en.wikipedia.org/wiki/Switched-mode_power_supply

    In contrast, a linear power supply regulates the output voltage by continually dissipating power in the pass transistor. The switched-mode power supply's higher electrical efficiency is an important advantage. Switched-mode power supplies can also be substantially smaller and lighter than a linear supply because the transformer can be much smaller.

  4. 80 Plus - Wikipedia

    en.wikipedia.org/wiki/80_Plus

    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. ATX - Wikipedia

    en.wikipedia.org/wiki/ATX

    For example, a 900-watt power supply with the 80 Plus Silver efficiency rating (which means that such a power supply is designed to be at least 85 percent efficient for loads above 180 W) may only be 73% efficient when the load is lower than 100 W, which is a typical idle power for a desktop computer. Thus, for a 100 W load, losses for this ...

  6. Processor power dissipation - Wikipedia

    en.wikipedia.org/wiki/Processor_power_dissipation

    Processor power dissipation or processing unit power dissipation is the process in which computer processors consume electrical energy, and dissipate this energy in the form of heat due to the resistance in the electronic circuits.

  7. Astec - Wikipedia

    en.wikipedia.org/wiki/ASTEC

    Astec International plc, better known as Astec Power or just Astec, was an international electronics company originally based in Hong Kong that manufactured power supply units and electric power conversion hardware. It was a major vendor of power supply units for computer systems, and for a time it was the largest global manufacturer of power ...

  8. AOL Mail

    mail.aol.com

    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  9. Standby power - Wikipedia

    en.wikipedia.org/wiki/Standby_power

    In July 2007 California's 2005 appliance standards came into effect, limiting external power supply standby power to 0.5 watts. [16] On 6 January 2010, the European Commission (EC) Regulation No 1275/2008 came into force. The regulations mandate that from 6 January 2010, "off mode" and standby power for electrical and electronic household and ...