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245:, 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."
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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
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in 1921. They summarized work on bandpass filters and vacuum-tube electronics, which had enabled a four-channel commercial system to be placed in operation between
Baltimore, MD, and Pittsburgh, PA, in 1918.
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development in the United States Navy. The committee report identified critical limitations of
American sonar compared with German developments, which spurred American fundamental sonar research.
229:, 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 Western Electric colleague,
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Electric research laboratories became part of Bell Laboratories in 1925. Colpitts reached the position of vice-president of
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in the early 1900s, he and scientists under his direction achieved significant advances in the development of
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during World War I and spent some time in France as a staff officer involved with military communication.
173:(January 19, 1872 – March 6, 1949) was a communications pioneer best known for his invention of the
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The
Machine in Neptune's Garden: Historical Perspectives on Technology and the Marine Environment
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200:, Canada. He was survived by his wife Grace Penney Colpitts and his son Donald B. Colpitts.
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In 1940, Colpitts was called out of retirement to head a committee reviewing the state of
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published an important paper on carrier multiplex telephony and telegraphy in the
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366:(Report). Washington DC: Department of Defense Research and Development Board.
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in 1915, and
Colpitts invented its electrical dual using capacitors in 1918 (
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Hellions of the deep: the development of
American torpedoes in World War II
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Subsurface warfare: the history of
Division 6, NDRC
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216:and was later a teacher and school principal in
406:People from Westmorland County, New Brunswick
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334:Helen M. Rozwadowski, David K. Van Keuren ,
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340:, Science History Publications/USA, 2004
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391:Canadian people of English descent
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45:Westmorland County, New Brunswick
362:Herrick, John (1 January 1951).
177:. As research branch chief for
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396:Canadian electrical engineers
235:inductive coupling oscillator
254:Point de Bute, New Brunswick
212:, he began his education at
210:Point de Bute, New Brunswick
198:Point de Bute, New Brunswick
256:, where Colpitts is buried.
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317:, Penn State Press, 1996
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273:Transactions of the AIEE
214:Mount Allison University
89:Mount Allison University
401:Scientists at Bell Labs
260:Colpitts served in the
239:the Colpitts oscillator
411:Harvard College alumni
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80:United States–Canadian
295:Elliott Cresson Medal
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220:. In 1895 he entered
113:Elliott Cresson Medal
262:US Army Signal Corps
204:Education and career
190:push–pull amplifiers
171:Edwin Henry Colpitts
149:US Army Signal Corps
293:He was awarded the
283:before retirement.
175:Colpitts oscillator
131:Electronic engineer
103:Colpitts oscillator
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222:Harvard University
194:Orange, New Jersey
93:Harvard University
69:Orange, New Jersey
269:Otto B. Blackwell
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155:Academic advisors
121:Scientific career
31:Edwin H. Colpitts
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386:1949 deaths
381:1872 births
348:pages 77–79
187:vacuum tube
183:oscillators
77:Citizenship
375:Categories
301:References
61:1949-03-07
297:in 1948.
281:Bell Labs
145:Bell Labs
208:Born in
47:, Canada
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127:Fields
115:(1948)
109:Awards
288:sonar
342:ISBN
319:ISBN
185:and
54:Died
37:Born
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