Calculation and Design of Alternating Current Lift Magnets (Classic Reprint) - Tapa dura

Sinopsis

Excerpt from Calculation and Design of Alternating Current Lift Magnets

There appeared recently in a leading technical journal an article in which the author, through a mathematical consideration, arrives at the conclusion that for equal maximum induction the lifting powers of single-phase, continuous, and three-phase current magnets are in the proportion 1 z 2 z 5 respectively. Owing to the constantly increasing use of alternating current systems for power as well as for lighting, this conclusion, if true, is of rea markable commercial importance. Already a successful duplication of continuous current apparatus for other purposes than lifting magnets has been achieved for alternating current use. Naturally this condition creates a demand for an alternating current lifting magnet that will Operate with satisfactory efficiency, especially as compared with that of the continuous current magnet.

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