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power supply unit

   Also found in: Acronyms, Wikipedia 0.09 sec.
(hardware)power supply unit - (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.
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The Power Supply Unit can operate 24 luminaires and the Lighting Controller manages the lighting effects including primary and pastel colour crossfade regulated up to 240 minute cycles; however, any particular colour, including white, can be maintained.
Specifier's information by The Architectural Review
VIP |R~ Dual-Trak |TM~, the induction power supply unit that runs two furnaces simultaneously, was introduced just two years ago.
Inductotherm Corp by Modern Casting
The Switch 4500G comes with an enhanced warranty that offers free phone support and free software upgrades as well as provides full coverage for the unit, including fans and power supply unit (PSU).
3Com Strengthens Enterprise Switching Portfolio to Simplify Network ... by Business Wire
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