Some simple demonstration experiments involving homopolar motors

Seán M. Stewart

Research output: Contribution to journalArticlepeer-review

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
DOIs
Publication statusPublished - 2007

Keywords

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

ASJC Scopus subject areas

  • Education
  • Physics and Astronomy(all)

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