Tekniska Museet
100 Innovations - Tekniska museet

An exhibition at the National Museum of Science and Technology in Stockholm, 2012 – 2018

The generator

The generator

Ingress för att beskriva innovationen

The generator

Part of a three-phase generator which was used in 1893 in the first transmission of high-voltage alternating current in Sweden. Photo: Anna Gerdén

The generator

Assembly of a three-phase generator for Glomfjord power plant in Norway. Photo: Archives of the National Museum of Science and Technology.

Kort fakta om innovationen

Kort fakta (2) om innovationen

Rubrik för små genier

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The generator

One day in 1819 the Danish professor, Hans Christian Ørsted, discovered that an electric current made a compass needle move when it was nearby. He realised that electricity and magnetism were related. With this knowledge, we have been able to invent countless machines and appliances. The generator is one of the most important of all. It provides us with electricity. Today nearly all of us receive electricity through generators, whether they are in nuclear or hydroelectric plants.

A generator converts movement into electricity by a magnet spinning inside a coil. When the magnet rotates the magnetic flux through the coil varies. Then electrons are set into motion — and we get electricity.

Rubrik för nördar

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