DCstrømmen
DCstrømmen, or direct current, is an electric current that flows in a single direction with a constant polarity. Unlike alternating current (AC), whose direction and magnitude vary cyclically, DC is characterized by a steady voltage or current over time. It is described by Ohm's law and is fundamental to many electrical and electronic systems.
DC can originate from chemical sources such as batteries and fuel cells, from DC generators, or from
Common applications include portable and handheld electronics, automotive powertrains with DC motors, data centers, and telecom
Transmission using direct current, through high-voltage direct current (HVDC) systems, enables efficient long-distance and submarine power
Historically, DC was central to early electrical distribution and equipment. The development of AC power systems