. The Bell System technical journal. Telecommunication; Electric engineering; Communication; Electronics; Science; Technology. MAGNET STEELS AND PERMANENT MAGNETS 385 ence of a magnet of the sum of these characteristics could be expressed in terms of the values of Br and He for the material. Such an assump- tion, if valid, would simplify the problem considerably. It is true that in the literature on the subject there are several papers^''''' describing more or less accurate methods by means of which a designer may predict the flux of a given magnet provided the demagnetization curve for the st
. The Bell System technical journal. Telecommunication; Electric engineering; Communication; Electronics; Science; Technology. MAGNET STEELS AND PERMANENT MAGNETS 385 ence of a magnet of the sum of these characteristics could be expressed in terms of the values of Br and He for the material. Such an assump- tion, if valid, would simplify the problem considerably. It is true that in the literature on the subject there are several papers^''''' describing more or less accurate methods by means of which a designer may predict the flux of a given magnet provided the demagnetization curve for the steel is known. But these methods are laborious, and unless a complete redesign is worked out for each case,. Fig. 1—Hysteresis loop of magnet steel. they do not answer such questions, for example, as how much a certain change in Br or He will affect the remanence of a given magnet, other factors remaining constant. Because the flux value of a magnet is affected by shape as well as other factors, and because magnets are made in a bewildering variety of shapes, it was decided to confine the investigations to straight bar magnets and leave the matter of the effect of shape on flux for a later study. ^ For references see end of Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original American Telephone and Telegraph Company. [Short Hills, N. J. , etc. , American Telephone and Telegraph Co. ]
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