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A dummy load is a device used to simulate an electrical load, usually for testing purposes. In radio a dummy antenna is connected to the output of a radio transmitter and electrically simulates an antenna, to allow the transmitter to be adjusted and tested without radiating radio waves. In audio systems, a dummy load is connected to the output of an amplifier to electrically simulate a loudspeaker, allowing the amplifier to be tested without producing sound. Load banks are connected to electrical power supplies to simulate the supply's intended electrical load for testing purposes.

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rdf:type
rdfs:label
  • Ersatzlast (de)
  • Carga fantasma (es)
  • Dummy load (en)
  • Dummy load (it)
  • Carga-fantasma (pt)
rdfs:comment
  • Der Ausdruck Ersatzlast (auch Ballast, englisch dummy load) bezeichnet eine künstliche Last in der Elektronik und in der Hochfrequenztechnik, welche ersatzweise für Testzwecke zur Simulation der elektrischen Eigenschaften einer realen Baugruppe, Last oder Antenne an ein zu untersuchendes Gerät (Stromversorgung, Sender) angeschlossen wird. (de)
  • A dummy load is a device used to simulate an electrical load, usually for testing purposes. In radio a dummy antenna is connected to the output of a radio transmitter and electrically simulates an antenna, to allow the transmitter to be adjusted and tested without radiating radio waves. In audio systems, a dummy load is connected to the output of an amplifier to electrically simulate a loudspeaker, allowing the amplifier to be tested without producing sound. Load banks are connected to electrical power supplies to simulate the supply's intended electrical load for testing purposes. (en)
  • Una carga fantasma es un dispositivo que se utiliza para simular una carga eléctrica, generalmente para fines de pruebas y/o medidas. (es)
  • Uma carga-fantasma é um dispositivo para simular uma carga elétrica, geralmente para fins de testes ou medidas. (pt)
  • Un dummy load, letteralmente carico fittizio, è un dispositivo utilizzato per sostituirsi all'utilizzatore di un apparecchio elettronico durante le prove tecniche dell'apparecchio stesso, simulando in maniera più accurata possibile il comportamento dell'utilizzatore vero senza dover sopportarne gli svantaggi. Un altro esempio è quello delle prove motore al banco, nelle quali i costruttori di motori per automobili testano il funzionamento del motore simulando il carico rappresentato dall'automobile con un freno apposito regolabile, senza dover eseguire necessariamente delle prove su strada. (it)
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  • http://commons.wikimedia.org/wiki/Special:FilePath/Cantenna.jpg
  • http://commons.wikimedia.org/wiki/Special:FilePath/Resistor_loads_for_amplifier_test.jpg
  • http://commons.wikimedia.org/wiki/Special:FilePath/Sender_Moosbrunn_-_RF_Dummy_Load_with_sodium_hydroxide_solution.jpg
  • http://commons.wikimedia.org/wiki/Special:FilePath/Waveguide_dummy_load.jpg
  • http://commons.wikimedia.org/wiki/Special:FilePath/ZS_Lasten_01_klein.jpg
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  • right (en)
caption
  • Small RF dummy load with capacity of 1 kW at frequencies up to 450 MHz. It consists of a 50Ω resistor immersed in oil to absorb the heat. (en)
  • Large RF dummy load for shortwave transmitter at the Moosbrunn transmitting station of the Austrian Broadcasting Service, Moosbrunn, Austria. It uses a sodium hydroxide solution to absorb the radio energy, which is circulated through the radiator to cool it. It has a capacity of 100 kW. (en)
direction
  • horizontal (en)
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