• Facets (new session)
• Description
• Metadata
• Settings
  • Rule: ActivityStreamsMapasEquivalentb3sb3sifpdbprdf-labelfacetshttp://dbpedia.org/resource/inference/rules/dbpedia#http://dbpedia.org/resource/inference/rules/opencyc#http://dbpedia.org/resource/inference/rules/umbel#http://dbpedia.org/resource/inference/rules/yago#http://dbpedia.org/schema/property_rules#http://www.ontologyportal.org/inference/rules/SUMO#http://www.ontologyportal.org/inference/rules/WordNet#http://www.w3.org/2002/07/owl#ldpoplwebskos-transurn:det:rdf:labelvirtrdf-labelvirtrdf-urlNone
    
  • Inverse Functional Properties: Disabled (fastest) Apply to subjects only Apply to objects only Apply to both subjects and objects
  • "Same As": Disabled (fastest) Apply to subjects only Apply to objects only Apply to both subjects and objects (recommended) Apply to subjects, objects and predicates (not recommended on big datasets) Apply to predicates only (special use cases only)

About: Bernard D. H. Tellegen     Goto   Sponge   NotDistinct   Permalink

An Entity of Type : umbel-rc:Scientist, within Data Space : dbpedia.demo.openlinksw.com associated with source document(s)

Type: Thingfoaf:Personpersondul:NaturalPersonEukaryotePersonHumanAnimalanimaleukaryotescientistspeciesschema:Personyago:WikicatPeopleAssociatedWithElectricityyago:WikicatPeopleFromOldambtScientistyago:CausalAgent100007347yago:Creator109614315yago:ElectricalEngineer110049017yago:Engineer109615807yago:Inventor110214637yago:LivingThing100004258yago:Object100002684yago:Organism100004475yago:Person100007846yago:PhysicalEntity100001930yago:Physicist110428004yago:YagoLegalActoryago:YagoLegalActorGeoyago:Scientist110560637yago:Whole100003553yago:WikicatDutchElectricalEngineersyago:WikicatDutchEngineersyago:WikicatDutchInventorsyago:WikicatDutchPeopleyago:WikicatDutchPhysicistsyago:WikicatDutchScientistsumbel-rc:Scientist New Facet based on Instances of this Class

Bernard D.H. Tellegen (24 June 1900 – 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 master's degree in electrical engineering from Delft University in 1923, and joined the Philips Natuurkundig Laboratorium (Philips Physics Laboratory) in Eindhoven. In 1926, he (and Gilles Holst) invented the pentode vacuum tube. The gyrator was invented by him around 1948. The gyrator is useful to simulate the effect of an inductor without using a coil. For example, it is used in hi-fi graphic equalizers. He held 41 US patents.