Matches in DBpedia 2014 for { ?s ?p Bernard D.H. Tellegen (Winschoten, 24 June 1900 – Eindhoven, 30 August 1990) was a Dutch electrical engineer and inventor of the pentode and the gyrator. He is also known for a theorem in circuit theory, Tellegen's theorem.He obtained a masters degree in electrical engineering from Delft University in 1923, and joined the Philips Natuurkundig Laboratorium (Philips Physics Laboratory) in Eindhoven. In 1926 he invented the pentode vacuum tube. The gyrator was invented by him around 1948.. }
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- Bernard_D._H._Tellegen comment "Bernard D.H. Tellegen (Winschoten, 24 June 1900 – Eindhoven, 30 August 1990) was a Dutch electrical engineer and inventor of the pentode and the gyrator. He is also known for a theorem in circuit theory, Tellegen's theorem.He obtained a masters degree in electrical engineering from Delft University in 1923, and joined the Philips Natuurkundig Laboratorium (Philips Physics Laboratory) in Eindhoven. In 1926 he invented the pentode vacuum tube. The gyrator was invented by him around 1948.".