power supply unit

(hardware)(PSU) An electronic module that converts highvoltage (110 or 240 VAC) alternating current mainselectricity into smoothed direct current at the variousdiffernt voltages required by the motherboard; internalperipheral devices, cheifly storage devices: hard disks,CD or DVD, floppy disks and external connections such asUSB. A PSU needs a high enough power output rating tosupply all the devices connected to it and should output aslittle as possible electrical noise, both on the output wiresand as electromagnetic radiation.

See also uninterruptable power supply.

单词	power supply unit
释义	power supply unit power supply unit (hardware)(PSU) An electronic module that converts highvoltage (110 or 240 VAC) alternating current mainselectricity into smoothed direct current at the variousdiffernt voltages required by the motherboard; internalperipheral devices, cheifly storage devices: hard disks,CD or DVD, floppy disks and external connections such asUSB. A PSU needs a high enough power output rating tosupply all the devices connected to it and should output aslittle as possible electrical noise, both on the output wiresand as electromagnetic radiation. See also uninterruptable power supply. AcronymsSeePSU
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