Telefunken
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Telefunken was a German radio and television producer, founded in Berlin in 1903 as a joint venture between Siemens & Halske and the Allgemeine Elektrizitäts-Gesellschaft. Prior to World War I, the co
Telefunken REN 904. A vacuum tube from 1930, used in early German radios.
Telefunken Partner 200, radio receiver model produced 1976-1978 in West Germany.
A Telefunken RC 881 cassette, CD player, and radio
Telefunken alarm clock from c. 1995 made by Thomson SA, designed by Philippe Starck
K. Ferdinand Braun
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Karl Ferdinand Braun was a German applied physicist who shared the 1909 Nobel Prize in Physics with Guglielmo Marconi for their contributions to the development of radio. With his two circuit system,
Telefunken
…communication. The one group at AEG, led by Adolf Slaby and Georg Graf von Arco, developed systems for the Kaiserliche Marine; the other one, under Karl Ferdinand Braun, at Siemens, for the German Army. Their main competitor was the British Marconi Company. When a dispute concerning patents arose between the two…
Ferdinand Braun
The house in Fulda, Germany, where Braun was born
An early resonant transformer invented by Braun used in the coherer radio receivers in wireless telegraphy radio systems made by the Telefunken company in 1903
Braun's two circuits to send and receive