This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. Find sources:  "Søren Hjorth" –  news · newspapers · books · scholar · JSTOR (October 2011) ( Learn how and when to remove this template message)

Søren Hjorth (13 October 1801, in Vesterbygaard at Kalundborg in the west of Zealand (Denmark) – 28 August 1870, in Copenhagen) was a Danish railway pioneer and inventor. Before Werner von Siemens, he discovered the dynamo-electric principle in 1854 and received the first patent for a self-excited dynamo.

Sources

• Søren Hjorth, inventor of the dynamo-electric principle; by Sigurd Smith. Pub. by "Elektroteknisk forening" at the expense of the Carlsberg foundation. (1912)