Ernst Alexanderson

Ernst Frederick Werner Alexanderson (January 25, 1878–May 14, 1975) was a Swedish-American electrical engineer. Chief Engineer at the RCA. Educated at the Royal Institute of Technology in Stockholm and in Germany, he spent his professional life in the US. He emigrated to the U.S. in 1902 and spent much of his life working for the General Electric company. He designed the Alexanderson alternator, a high-frequency generator for longwave transmissions. The only surviving transmitter in a working state is at the Grimeton radio station outside Varberg, Sweden. It is a prime example of pre-electronic radio technology and was added to UNESCO's World heritage list in 2004.

See also

Tuned radio frequency receiver

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