power supply
noun1
Used other than figuratively or idiomatically: see power, supply.
- The utility will invest in power plants and transmission lines to ensure a stable power supply.
- The track-sectioning cabins house not only switchgear for the traction current, but also transformers to provide power supplies to the signalling equipment.1961 December, “Planning the London Midland main-line electrification”, in Trains Illustrated, page 722:
2
A source of power such as the mains or a generator.
3
That part of a piece of electronic apparatus that provides appropriate voltages for the rest of the electronics from the connected AC source.
- Related terms
- charger, low-power mode, power unit
- Hyponyms
- power adaptor, power adapter, power brick, power supply unit, PSU, P.S.U., P. S. U., wall wart