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Sidney Darlington

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Subject: Analogue filter, Equivalent impedance transforms, Darlington transistor, People associated with radar, John K. Hodnette
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Sidney Darlington

Sidney Darlington
Born (1906-07-18)July 18, 1906
Pittsburgh, Pennsylvania
Died October 31, 1997(1997-10-31) (aged 91)
Exeter, New Hampshire
Residence United States
Nationality American
Fields Electrical engineering
Notable awards IEEE Edison Medal (1975)
IEEE Medal of Honor (1981)

Sidney Darlington (July 18, 1906 – October 31, 1997) was an electrical engineer and inventor of a transistor configuration in 1953, the Darlington pair. He advanced the state of network theory, developing the insertion-loss synthesis approach, and invented chirp radar, bombsights, and gun and rocket guidance.

Darlington joined Bell Labs in 1929, where his first supervisor was Hendrik Wade Bode, and he remained there until he retired in 1971.

In 1945, he was awarded the Presidential Medal of Freedom, the United States' highest civilian honor, for his contributions during World War II. He was an elected member of the National Academy of Engineering, which cited his contributions to electrical network theory, radar, and guidance systems. In 1975, he received IEEE's Edison Medal "For basic contributions to network theory and for important inventions in radar systems and electronic circuits" and the IEEE Medal of Honor in 1981 "For fundamental contributions to filtering and signal processing leading to chirp radar".

He died at his home in Exeter, New Hampshire, USA, at the age of 91.


  • — Wave Transmission Network
  • — Semiconductor signal translating devices. (ed., "Darlington Transistor")
  • — Bombsight Computer
  • — Tracking Device
  • — Fire Control Computer
  • — Pulse Transmission (chirp)
  • — Rocket Guidance
  • — Two-Port Network Synthesis
  • — Chirp Pulse Equalizer

External links

  • IEEE Biography
  • Darlington’s Contributions to Transistor Circuit Design
  • National Academy of Sciences Biographical Memoir
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