Bernardus Dominicus Hubertus Tellegen (Winschoten, June 27, 1900 - Eindhoven, August 30, 1990) was a Dutch electrical engineer and inventor of the pentode with Gilles Holst. biography
Tellegen achieved in 1923, his engineering diploma is electrical engineering at Delft University of Applied Sciences (now Delft University of Technology). He joined the Philips Natural Laboratory (NatLab) and became Van der Pol's first employee. Tellegen addressed his research first on triodes, and found the pentode in 1926. The pentode, a radio tube, was used in Philips' first radio receiver and later the pentode was used in almost any radio or amplifier. Tellegen also conducted groundbreaking theoretical work on electrical networks.
He has also contributed a lot of network theory, including the theory of the gyrator. The statement of Tellegen provides a simple connection between wholesalers that comply with Kirchhoff's laws.
He was chairman of the Dutch Electronics and Radio Society (NERG) from 1942 to 1952; He became an honorary member of the society in 1952. He was chairman of the Dutch URSI Committee from 1948 to 1960. He was associated with the Delft University of Technology from 1946 to 1966 as an outstanding professor of network theory. Tellegen received an honorary doctorate in 1970 at this university and was elected in 1960 as a member of the Royal Netherlands Academy of Sciences (KNAW). Tellegen received the IEEE Edison Medal in 1973 as the first non-American: "For a creative career with major earnings for the electrical network theory and the gyrator".
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