The advantages of the ferreed as a switching network crosspoint led to an early decision to adopt it for use in electronic switching systems. The prospect of large-scale use of the device gave impetus to a search for an economical, easily fabricated component. This paper describes the considerations which influenced the choices of a suitable magnetic material, magnetic circuit geometry, and coil design that were made for the production model.
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A. Feiner (1964) studied this question.
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