Direct current Create Talk0 Category page This page needs content. You can help by adding a sentence or a photo! Add to this page! Rectifier Inverter (electrical) Direct current Alternating current Pages in category "Direct current" The following 4 pages are in this category, out of 4 total. A Alternating currentD Direct currentI Inverter (electrical)R Rectifier Retrieved from "http://engineering.wikia.com/wiki/Category:Direct_current"