(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.
noun 1. an accessory unit or apparatus attached to an engine-powered machine and powered by the engine. Abbreviation: PTO.
- Power tie
noun a conservative man’s tie intended to convey influence or authority
noun 1. a tool powered by an electric motor or a gasoline engine. noun 1. a tool powered by electricity noun An extremely hardworking student: power tools cramming all night
noun 1. a train of gears and shafting transmitting power from an engine, motor, etc., to a mechanism being driven.