Grace's Guide To British Industrial History

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Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 162,257 pages of information and 244,498 images on early companies, their products and the people who designed and built them.

Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 147,919 pages of information and 233,587 images on early companies, their products and the people who designed and built them.

Switched Reluctance Drives

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Switched Reluctance Drives Ltd

1980 A company formed by Peter John Lawrenson and Michael Stephenson at Leeds University, William Ray and Rex Davis at Nottingham University (4 leading academics in the field) with the aim of commercializing their new motor technology through licensing.

Switched reluctance machines were developed for a diverse range of industrial, commercial, and automotive applications.

1991 Lawrenson resigned his academic post to devote his full attention to the growing business.

1994 The company was acquired by Emerson Electric

2010 Acquired by Nidec Corporation of Japan.


See Also

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Sources of Information


  • [1] Biography of Peter John Lawrenson, ODNB
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