Louis Alan Hazeltine

Louis Alan Hazeltine ( born August 7, 1886 in Morristown (New Jersey), † May 24, 1964 in Maplewood ( NJ ) ) was an American electronics engineer.

Life

He studied at Stevens Institute of Technology, where he earned his degree in mechanical engineering in 1906. After one year of employment in a testing department at General Electric in Schenectady, he began to teach at Stevens Electrical Engineering and in 1917 a full professor and head of the Department of Electrical Engineering. Inspired by an early publication of Edwin Howard Armstrong, he began his research on tubes and circuits presented mathematical analyzes on.

He was an active member of the Radio Club of America and the Institute of Radio Engineers, in which he was elected a Fellow in 1921 and 1936 elected president.

Once it was realized the benefits of wireless voice, in the United States Navy during the First World War, in 1918 Hazeltine Radio consultant at the Washington Navy Shipyard, whose technical director, his former student LCF Horle was. For destroyers, he developed the recipient SE 1420. As for marine radio equipment, the Bureau of Steam Engineering at the time was in charge, the equipment carried the prefix SE.

Back at the Stevens Institute, he developed in 1922, to neutralize the grid -to-plate capacitative coupling ( internal capacitive coupling) in amplifiers with large gain the straight receiver Neutrodyne with De - Forrest - triode, which was offered from the following year. The student Harold Alden Wheeler, who had researched in the same direction, was his assistant at the Institute since 1922.

To make the Neutrodyne for consumers available, he patented it and granted licenses to small manufacturers. In 1924 he founded with investors in Hoboken, near the institute, the patenting company Hazeltine Corporation, which he sold the patents and the managed licenses. His first employee was here Wheeler, the accessories such as AGC and IFF developed. RCA, who saw their monopoly broken and wanted abhaben a piece of the pie, filed a lawsuit, but they won in 1927. Until then, around 10 million Neutrodyne were sold. The 1926-1928 established, improved tubes with screen grid made ​​the Neutrodyne obsolete.

From 1925 to 1933 he took leave at the Institute, where he most recently in France, mathematics and art history studied for two years. After that, he worked at the Stevens until 1944 as a professor of mathematical physics. He also advised the government to broadcasting regulations. In the last years of the war he again served as a consultant to the Office of Scientific Research and Development.

The Hazeltine Corporation was acquired in 1986 by the Emerson Electric Company and acquired by BAE Systems Inc. 2007.

Itemized bills

  • Americans
  • Born in 1886
  • Died in 1964
  • Man
  • Electronics
Maplewood (New Jersey)
40787
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