DWDS:
Energieversorgung
die Energieversorgung für die Bevölkerung, IndustrieDuden:
Energieversorgung, die
Versorgung mit Energie (2) oder Energieträgern
M-W:
power supply
: a device providing power to electronic equipment and sometimes designated A, B, or C according to its function of heating vacuum tube cathodes, causing a flow of electron current in plate circuits, or applying a direct voltage in grid circuits
Collins:
power supply
noun
(electricity) a source of power, such as the mains or a generator
Computer, Telephony & Electronics Industry Glossary:
power supply
1. The component that supplies power to a computer or other electrical device. Most personal computers can be plugged into standard electrical outlets. The power supply then pulls the required amount of electricity and converts the AC current to DC current. It also regulates the voltage to eliminate voltage or current spikes and surges common in most electrical systems. Not all power supplies, however, do an adequate voltage-regulation job, so a computer is always susceptible to large voltage fluctuations. Power supplies are rated in terms of the number of watts they generate. The more powerful the computer, the more watts it can provide to components. In general, 200 watts should be sufficient. See UPS.
2. The term given to an electrical generator, used where power is not available always or at all.
FWIW:
http://en.wikipedia.org/wiki/Power_supplyhttp://de.wikipedia.org/wiki/EnergieversorgungSiehe auch: power supplies - die Stromversorgungen (pl.)
