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Miksa Déri

Prototypes of the world's first high-efficiency transformers. (Széchenyi István Memorial Exhibition Nagycenk)
Dynamo Electric Machine [End View, Partly Section] ()
Magnetizing Current Shunt Circuit ()

Miksa Déri (1854 November, Bács, Kingdom of Hungary, (now: Bač, Serbia) - 1938) was a Hungarian electrical engineer. He was, with his partners Károly Zipernowsky and Ottó Bláthy, co-inventor of the closed iron core transformer and the ZBD model AC electrical generator.

ZBD was an abbreviation of the three men's names: Zipernowsky, Bláthy and Déri.

Déri is also noted for inventing a type of repulsion motor.


  • There is a secondary school named after Miksa Déri in Budapest, Hungary.
  • There is a secondary school named after Miksa Déri in Szeged, Hungary that offers courses preparing students for the engineering fields.

External links

  • Hungarian Patent Office's Miksa Déri (1854 - 1938)
  • Biography of Miksa Déri

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