Alternative energy Create Talk0 Category page This page needs content. You can help by adding a sentence or a photo! Add to this page! “Uninterruptible power supply An uninterruptible power supply, or UPS, is a device or system that... Uninterruptible power supply Rectifier Inverter (electrical) Direct current Alternating current “Wind farm Wind farm refers to a group of wind turbines, designed for generating AC power... Wind farm Transformer Pages in category "Alternative energy" The following 7 pages are in this category, out of 7 total. A Alternating currentD Direct currentI Inverter (electrical) R RectifierT TransformerU Uninterruptible power supply W Wind farm Retrieved from "http://engineering.wikia.com/wiki/Category:Alternative_energy"