Edwin H. Colpitts
| Edwin H. Colpitts | |
|---|---|
| Born | January 19, 1872 Westmorland County, New Brunswick, Canada |
| Died |
March 6, 1949 (aged 77) Orange, NJ, United States |
| Residence | United States |
| Citizenship | United States-Canadian |
| Fields | Electronic engineer |
| Institutions |
Western Electric Bell Labs US Army Signal Corps |
| Alma mater |
Mount Allison University Harvard University |
| Academic advisors | John Trowbridge |
| Known for | Colpitts oscillator |
| Influences | George A. Campbell |
| Notable awards | Elliott Cresson Medal (1948) |
Edwin Henry Colpitts (January 19, 1872 – March 6, 1949) was a communications pioneer best known for his invention of the Colpitts oscillator. As research branch chief for Western Electric in the early 1900s, he and scientists under his direction achieved significant advances in the development of oscillators and vacuum tube push-pull amplifiers. In 1915, his team successfully demonstrated the first transatlantic radio telephone. Colpitts died at home in 1949 in Orange, NJ, United States and his body was interred in Point de Bute, New Brunswick, Canada. He was survived by his wife Grace Penney Colpitts and his son Donald B. Colpitts.
Born in Point de Bute, New Brunswick, he began his education at Mount Allison University and was later a teacher and school principal in Newfoundland. In 1895 he entered Harvard University where he studied physics and mathematics. He received a BA in 1896 and a Master's degree in 1897 from that institution. He remained at Harvard for two additional years while taking advanced courses and serving as a laboratory assistant to John Trowbridge, director of the Jefferson Physical Laboratory. In 1899, Colpitts accepted a position with American Bell Telephone Company. He moved to Western Electric in 1907. His colleague, Ralph Hartley invented an inductive coupling oscillator which Colpitts improved in 1915. It was first reported a paper he published, with Edward B. Craft, in 1919. He patented it as the "Oscillation Generator" in 1920. Colpitts and Craft wrote that "the possibility of communication by speech between any two individuals in the civilized world is one of the most desirable ends for which engineering can strive."
Colpitts served in the US Army Signal Corps during World War I and spent some time in France as a staff officer involved with military communication.
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