power supply unit


Also found in: Acronyms.

power supply unit

(hardware)
(PSU) An electronic module that converts high voltage (110 or 240 VAC) alternating current mains electricity into smoothed direct current at the various differnt voltages required by the motherboard; internal peripheral devices, cheifly storage devices: hard disks, CD or DVD, floppy disks and external connections such as USB. A PSU needs a high enough power output rating to supply all the devices connected to it and should output as little as possible electrical noise, both on the output wires and as electromagnetic radiation.

See also uninterruptable power supply.
References in periodicals archive ?
The rapid revolution of the power tools, and the successive launch of new models of telecommunications equipment such as smartphones, in addition to the rapid growth of the market of electronic cigarettes, have all driven the demand of switching power supply units.
These characteristics are expected to contribute to improvements in the conversion efficiency of power supply units and make them more compact.
HONG KONG, Nov 27, 2015 - (ACN Newswire) - Ten Pao Group Holdings Limited ("Ten Pao" or "the Group") is a leading one-stop manufacturer of switching power supply units in the PRC.
However, greater power supply unit capacity typically results in greater internal loss, making a high-efficiency power supply unit difficult to produce.
The standard unit comes with a 420W power supply unit and space for up to four internal 3.
The Corsair HX1000W power supply unit (CMPSU-1000HX) will be available in late March through Corsair's authorized distributors, resellers and e-tailers worldwide, priced at $279.
TOKYO -- OKI Electric Industry (TOKYO:6703) and OKI Power Tech, an OKI Group company developing and manufacturing power supply units, today announced the establishment of OKI Power Tech Trading (Shenzhen), in Shenzhen, China, to enhance the design and development structure and to expand sales in the Chinese market.
Such sales will be coming from OKI Power Tech's revolutionary product, which is an industry-first amorphous power supply unit using powdered amorphous material for the core of the switching transformer.
Limited Tenders are invited for Procurement Of Power Supply Unit For Abb Make Excitation System
Limited Tenders are invited for Supply of Power Supply Unit,10 O/P Range 24v/10a, 24 Vdc Power Supply Unit, Ink Ribbon Catridge For Lm370a Ferruling, Ink Ribbon For Letatwin Lm380a Ferr Prin
png(Diagram: output of power supply unit for servers with Fujitsu's GaN power device)