Alexanderson, Ernst F.W.

▪ American electrical engineer
in full  Ernst Frederik Werner Alexanderson  
born Jan. 25, 1878, Uppsala, Sweden
died , May, 1975, Schenectady, N.Y., U.S.

      electrical engineer (electric generator) and television pioneer who developed a high-frequency alternator (a device that converts direct current into alternating current) capable of producing continuous radio waves and thereby revolutionized radio communication.

      In 1901 Alexanderson emigrated to the United States and the following year began working at the General Electric Company in Schenectady, N.Y., under Charles P. Steinmetz.

      In 1906 Alexanderson completed his alternator, which in the ensuing years greatly improved transoceanic communication and firmly established the wireless as an important tool in shipping and warfare. He continued to improve the alternator and in addition made important improvements in radio antennas, electric railroads, ship propulsion, and electric motors. In 1916 he patented a selective-tuning device for radio receivers, which became an integral part of modern radio systems. He also developed the amplidyne, an extremely sophisticated automatic control system first used in factories to automate intricate manufacturing processes and used during World War II in conjunction with antiaircraft guns.

      Alexanderson demonstrated television in his own home as early as 1927 and in 1930 gave the first public exhibition of television with a system that displayed the picture on a 7-foot (2-metre) screen. Alexanderson retired from his full-time position with General Electric in 1948 but continued to act as an engineering consultant. From 1952 he worked at Radio Corporation of America (RCA) as a consultant and was awarded his 321st patent in 1955 for the colour-television receiver that he developed for RCA.

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Universalium. 2010.

Look at other dictionaries:

  • Alexanderson, Ernst Frederik Werner — SUBJECT AREA: Broadcasting, Electricity, Electronics and information technology, Telecommunications [br] b. 25 January 1878 Uppsala, Sweden d. ? May 1975 Schenectady, New York, USA [br] Swedish American electrical engineer and prolific radio and… …   Biographical history of technology

  • Alexanderson,Ernst Frederick Werner — Al·ex·an·der·son (ăl ĭg zănʹdər sən), Ernst Frederick Werner. 1878 1975. Swedish born American electrical engineer and inventor who demonstrated the first practical television system (1930). * * * …   Universalium

  • Alexanderson, Ernst F(rederik) W(erner) — born Jan. 25, 1878, Uppsala, Swed. died May 14, 1975, Schenectady, N.Y., U.S. Swedish born U.S. electrical engineer and television pioneer. He emigrated to the U.S. in 1901 and spent most of the next five decades at General Electric; from 1952 he …   Universalium

  • Alexanderson, Ernst F(rederik) W(erner) — (25 ene. 1878, Uppsala, Suecia–14 may. 1975, Schenectady, N.Y., EE.UU.). Ingeniero eléctrico estadounidense de origen sueco, pionero de la televisión. Emigró a EE.UU. en 1901 y pasó la mayor parte de las cinco décadas siguientes en la empresa… …   Enciclopedia Universal

  • Ernst Alexanderson — Ernst Fredrik Werner Alexanderson (* 25. Januar 1878 in Uppsala; † 14. Mai 1975 in Schenectady, Schenectady County) war ein schwedisch amerikanischer Elektroingenieur. Ausgebildet an der Technischen Hochschule Stockholm und an der Technischen… …   Deutsch Wikipedia

  • Ernst F. W. Alexanderson — Ernst Fredrik Werner Alexanderson (* 25. Januar 1878 in Uppsala; † 14. Mai 1975 in Schenectady, Schenectady County) war ein schwedisch amerikanischer Elektroingenieur. Ausgebildet an der Technischen Hochschule Stockholm und an der Technischen… …   Deutsch Wikipedia

  • Ernst Frederick Werner Alexanderson — Ernst Fredrik Werner Alexanderson (* 25. Januar 1878 in Uppsala; † 14. Mai 1975 in Schenectady, Schenectady County) war ein schwedisch amerikanischer Elektroingenieur. Ausgebildet an der Technischen Hochschule Stockholm und an der Technischen… …   Deutsch Wikipedia

  • Ernst Frederik Werner Alexanderson — Ernst Fredrik Werner Alexanderson (* 25. Januar 1878 in Uppsala; † 14. Mai 1975 in Schenectady, Schenectady County) war ein schwedisch amerikanischer Elektroingenieur. Ausgebildet an der Technischen Hochschule Stockholm und an der Technischen… …   Deutsch Wikipedia

  • Alexanderson — Ernst Fredrik Werner Alexanderson (* 25. Januar 1878 in Uppsala; † 14. Mai 1975 in Schenectady, Schenectady County) war ein schwedisch amerikanischer Elektroingenieur. Ausgebildet an der Technischen Hochschule Stockholm und an der Technischen… …   Deutsch Wikipedia

  • Ernst — Ernst, Max Ernst, Richard Robert * * * (as used in expressions) Ackermann, Konrad Ernst Alexanderson, Ernst F(rederik) W(erner) Arndt, Ernst Moritz Baer, Karl Ernst, caballero de Barlach, Ernst Bergman, (Ernst) Ingmar Herbert Ernst Karl Frahm …   Enciclopedia Universal

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