Bernard D.H. Tellegen (Netherlands, 24 June 1900 - Eindhoven, 30 August 1990) was an electrical engineer and inventor of the penthode and the gyrator. Country Netherlands Province North Brabant Government  - Mayor Alexander Sakkers (VVD) Area (2006)  - Municipality 88. ... An engineers degree is an academic degree which is intermediate in rank between a masters degree and a doctorate; it is occasionally to be encountered in the United States in technical fields. ... The gyrator is an electric circuit which inverts an impedance. ...

He obtained a masters degree in electrical engineering from Delft University in 1923, and joined the Philips Research Laboratories in Eindhoven. In 1926 he invented the penthode. The gyrator was invented around 1948. Electrical Engineers design power systems… … and complex electronic circuits. ... Founded in 1842, the Delft University of Technology, in Delft, the Netherlands, is one of the oldest, largest, and most comprehensive technical universities in the Netherlands, with over 13,000 students and 2,100 scientists (including 200 professors). ... Philips HQ in Amsterdam Koninklijke Philips Electronics N.V. (Royal Philips Electronics N.V.), usually known as Philips, (Euronext: PHIA, NYSE: PHG) is one of the largest electronics companies in the world, founded and headquartered in the Netherlands. ... Country Netherlands Province North Brabant Government  - Mayor Alexander Sakkers (VVD) Area (2006)  - Municipality 88. ... The gyrator is an electric circuit which inverts an impedance. ...

In the period 1946-1966 Tellegen was an adjunct professor of circuit theory at the University of Delft. From 1942 to 1952 he was president and honorary member of the Netherlands Electronics and Radio Society. An electrical network or electrical circuit is an interconnection of analog electrical elements such as resistors, inductors, capacitors, diodes, switches and transistors. ...

The Australian Institute of Radio Engineers appointed Tellegen a honorary life member in 1953. He was Fellow of the IEEE, and he won the IEEE Edison Medal in 1973 "For a creative career of significant achievement in electrical circuit theory, including the gyrator". Tellegen was elected a member of the Royal Netherlands Academy of Sciences in 1960. In 1970 the University of Delft conferred on an doctor honoris causa degree. The Institute of Electrical and Electronics Engineers or IEEE (pronounced as eye-triple-ee) is an international non-profit, professional organization incorporated in the State of New York, United States. ... The IEEE Edison Medal is presented by the IEEE for a career of meritorious achievement in electrical science, electrical engineering or the electrical arts. ... The gyrator is an electric circuit which inverts an impedance. ... The Koninklijke Nederlandse Akademie van Wetenschappen (KNAW, Royal Netherlands Academy of Arts and Sciences) is an organisation dedicated to the advancement of science and literature in the Netherlands. ... Founded in 1842, the Delft University of Technology, in Delft, the Netherlands, is one of the oldest, largest, and most comprehensive technical universities in the Netherlands, with over 13,000 students and 2,100 scientists (including 200 professors). ... Honoris causa (plural: Causae) is a Latin term meaning for the sake of honor, abbreviated as . ...