Abstract
PROF. F. W. GROVER, makes an authoritative selection among the numerous formulæ which have been suggested for the calculation of mutual and self inductances. He does not attempt proofs of the formulæ, but gives adequate references to the original papers. He gives sufficient explanation of general principles to allow the adaptation of the formulæ to particular cases which are not directly covered (an improbable contingency, however). As the majority of exact formulæ are cumbersome to use, he usually offers numerical tables giving an accuracy of 1 in 1,000 or better, with some indication of the accuracy. Where interpolation between tabulated values would be inaccurate, he gives either alternative formulæ or tables using a different argument. Every likely shape and relative disposition of circuit element is included. There are formulæ for deeply wound coils, and for coils of spaced turns of round wire or of flat tape. The discussion of inductance at high frequencies is less precise than the rest of the book—excusably so, in view of the uncertain effects of self-capacitance. (Here is a field for some useful new work.) The mechanical forces between inductors are also calculated.
Inductance Calculations
Working Formulas and Tables. By Prof. Frederick W. Grover. Second printing. Pp. xii + 286. (New York : D. Van Nestrand Co., Ltd., 1947.) 31s. 6d. net.
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LYNCH, A. Inductance Calculations. Nature 163, 195 (1949). https://doi.org/10.1038/163195a0
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DOI: https://doi.org/10.1038/163195a0