Armstrong, Edwin H. (Edwin Howard), 1890-1954

Edwin Howard Armstrong is one of America's greatest inventors and scientists. He was born in New York City on December 18, 1890 and died there on January 31, 1954. Armstrong studied electrical engineering at Columbia University. In 1912 he invented a feedback circuit that allowed signals to be produced with greatly increased amplification. This invention is the basis of radio and television and for it he was awarded the Franklin Medal, the highest U.S. scientific honor. In 1933 he invention circuits that produced the varying number of waves per second waves over a wide band, or FM radio transmission. The first public broadcast of FM was made in 1935.

From the description of Edwin H. Armstrong papers, 1890-1972. (Columbia University In the City of New York). WorldCat record id: 428643970

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