Transistor Radio
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Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. A transistor radio is a small transistor-based radio receiver.Bell Laboratories demonstrated the first transistor on December 23, 1947.After obtaining patent protection, the company held a news conference on June 30, 1948, at which a prototype transistor radio was demonstrated. There are many claimants to the title of the first company to produce practical transistor radios, often incorrectly attributed to Sony (originally Tokyo Tsushin Kogyo). Texas Instruments had…mehr

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Produktbeschreibung
Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. A transistor radio is a small transistor-based radio receiver.Bell Laboratories demonstrated the first transistor on December 23, 1947.After obtaining patent protection, the company held a news conference on June 30, 1948, at which a prototype transistor radio was demonstrated. There are many claimants to the title of the first company to produce practical transistor radios, often incorrectly attributed to Sony (originally Tokyo Tsushin Kogyo). Texas Instruments had demonstrated all-transistor AM (amplitude modulation) radios as early as 1952, but their performance was well below that of equivalent vacuum tube models. A workable all-transistor radio was demonstrated in August 1953 at the Düsseldorf Radio Fair by the German firm Intermetall. It was built with four of Intermetall''s hand-made transistors, based upon the 1948 invention of Herbert Mataré andHeinrich Welker However, as with the early Texas units (and others) only prototypes were ever built; it was never put into commercial production.