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Der Lichtbogensender, in seiner ausgereift … Der Lichtbogensender, in seiner ausgereiften Form nach seinem Erfinder Valdemar Poulsen auch Poulsen-Sender genannt, diente zur Nachrichtenübertragung im Langwellenbereich und nutzt den negativen differentiellen Widerstand eines Lichtbogens zur Schwingungserzeugung. Lichtbogensender wurden Anfang des 20. Jahrhunderts bis Ende der 1920er Jahre eingesetzt.erts bis Ende der 1920er Jahre eingesetzt.
, The arc converter, sometimes called the ar … The arc converter, sometimes called the arc transmitter, or Poulsen arc after Danish engineer Valdemar Poulsen who invented it in 1903, was a variety of spark transmitter used in early wireless telegraphy. The arc converter used an electric arc to convert direct current electricity into radio frequency alternating current. It was used as a radio transmitter from 1903 until the 1920s when it was replaced by vacuum tube transmitters. One of the first transmitters that could generate continuous sinusoidal waves, it was one of the first technologies used to transmit sound (amplitude modulation) by radio. It is on the list of IEEE Milestones as a historic achievement in electrical engineering.ric achievement in electrical engineering.
, L'émetteur à arc, aussi appelé convertisse … L'émetteur à arc, aussi appelé convertisseur à arc ou arc de Poulsen, selon le nom de son inventeur Valdemar Poulsen, est utilisé pour convertir du courant continu en énergie radioélectrique. Cet appareil est inscrit à la liste des évènements importants de l'IEEE (Institute of Electronic and Electrical Engineers, Institut du génie électronique et électrique américain).nie électronique et électrique américain).
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| rdfs:comment |
L'émetteur à arc, aussi appelé convertisse … L'émetteur à arc, aussi appelé convertisseur à arc ou arc de Poulsen, selon le nom de son inventeur Valdemar Poulsen, est utilisé pour convertir du courant continu en énergie radioélectrique. Cet appareil est inscrit à la liste des évènements importants de l'IEEE (Institute of Electronic and Electrical Engineers, Institut du génie électronique et électrique américain).nie électronique et électrique américain).
, The arc converter, sometimes called the ar … The arc converter, sometimes called the arc transmitter, or Poulsen arc after Danish engineer Valdemar Poulsen who invented it in 1903, was a variety of spark transmitter used in early wireless telegraphy. The arc converter used an electric arc to convert direct current electricity into radio frequency alternating current. It was used as a radio transmitter from 1903 until the 1920s when it was replaced by vacuum tube transmitters. One of the first transmitters that could generate continuous sinusoidal waves, it was one of the first technologies used to transmit sound (amplitude modulation) by radio. It is on the list of IEEE Milestones as a historic achievement in electrical engineering.ric achievement in electrical engineering.
, Der Lichtbogensender, in seiner ausgereift … Der Lichtbogensender, in seiner ausgereiften Form nach seinem Erfinder Valdemar Poulsen auch Poulsen-Sender genannt, diente zur Nachrichtenübertragung im Langwellenbereich und nutzt den negativen differentiellen Widerstand eines Lichtbogens zur Schwingungserzeugung. Lichtbogensender wurden Anfang des 20. Jahrhunderts bis Ende der 1920er Jahre eingesetzt.erts bis Ende der 1920er Jahre eingesetzt.
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Émetteur à arc
, Arc converter
, Lichtbogensender
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