Bernard D. H. Tellegen facts for kids
Quick facts for kids
Bernard D.H. Tellegen
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| Born | 24 June 1900 |
| Died | 30 August 1990 (aged 90) Eindhoven, Netherlands
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| Nationality | Dutch |
| Alma mater | Delft University |
| Awards | IEEE Edison Medal (1973) |
| Scientific career | |
| Institutions | Philips Natuurkundig Laboratorium Delft University |
Bernard D.H. Tellegen (June 24, 1900 – August 30, 1990) was a brilliant Dutch electrical engineer and inventor. He is famous for creating two important electronic parts: the pentode and the gyrator. He also developed a key rule in how electric circuits work, known as Tellegen's theorem.
A Brilliant Inventor
Early Life and Key Inventions
Bernard Tellegen finished his master's degree in electrical engineering from Delft University in 1923. Soon after, he joined the Philips Physics Laboratory in Eindhoven, Netherlands.
In 1926, he and Gilles Holst invented the pentode. This was a special type of vacuum tube, which were important electronic components before transistors were invented.
Around 1948, Tellegen invented the gyrator. This is a clever electronic circuit that can act like a coil (called an inductor) without actually needing a real coil. This invention is still useful today, for example, in hi-fi sound systems like graphic equalizers. Tellegen held 41 patents in the United States for his inventions.
Teaching and Honors
From 1946 to 1966, Tellegen was a part-time professor at the University of Delft. He taught students about circuit theory, which is the study of how electric circuits behave.
He was also a leader in the electronics world. From 1942 to 1952, he was the president of the Netherlands Electronics and Radio Society.
Many organizations recognized Tellegen's important work. In 1953, the Australian Institute of Radio Engineers made him an honorary member for life. He was also a top member, called a Fellow, of the IEEE (Institute of Electrical and Electronics Engineers).
In 1973, he received the very important IEEE Edison Medal. This award was given to him "For a creative career of significant achievement in electrical circuit theory, including the gyrator". In 1960, he became a member of the Royal Netherlands Academy of Arts and Sciences. The University of Delft also gave him an honorary doctorate degree in 1970. This special degree recognized his great contributions to science, even though he didn't study for it in the usual way.
