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Edwin Howard Armstrong

 New York 18.December.1890   New York 01.February.1954
 

Biographical notes

 
 
He attended the School of Engineering at Columbia University in 1909. In the winter of 1912-13 discovered that feed back  through the grid of the current Triode obtained the plate, it was reinforced and intensity signals increased a thousand times. He was born on regeneration circuit or receiver reaction whose discovery was kept secret until 31 January 1913. The first practical application came at the outbreak of war when Britain interrupted all communications between Germany and the United States for which the German embassy in Washington, remained isolated, was not just ask to test the equipment Armstrong: communications with the mother country were shooting and remained outstanding until the war in the USA in 1917.