Some simple demonstration experiments involving homopolar motors

Seán M. Stewart

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The ready availability of very strong permanent magnets in the form of rare-earth magnetic alloys such as neodymium-iron-boron has lead to renewed interest in one of the oldest types of electric motors - the homopolar motor. The ease with which a demonstration homopolar motor can now be built and operated when neodymium magnets are used is quite remarkable. In this paper some simple homopolar motors employing neodymium magnets suitable for demonstrational purposes are described and discussed. Copyright by the Sociedade Brasileira de Física.

Original languageEnglish
Pages (from-to)275-281
Number of pages7
JournalRevista Brasileira de Ensino de Fisica
Volume29
Issue number2
Publication statusPublished - 2007
Externally publishedYes

Fingerprint

neodymium
experiment
magnets
electric motors
permanent magnets
availability
boron
rare earth elements
iron

Keywords

  • Driven wheel
  • Homopolar motor
  • Homopolar roller
  • Lambert W function
  • Neodymium magnets

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Education

Cite this

Some simple demonstration experiments involving homopolar motors. / Stewart, Seán M.

In: Revista Brasileira de Ensino de Fisica, Vol. 29, No. 2, 2007, p. 275-281.

Research output: Contribution to journalArticle

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