An elementary book on electricity and magnetism and their applications (1919)
Jackson, Dugald C. (Dugald Caleb), 1865-1951, Jackson, John Price, b. 1868, Black, Newton Henry, b. 1874 · New York, The Macmillian Co · leaf 249
upon the amount of iron in the core, the numberof reversals per secondmade by the magnet-ism in it, the densityof magnetism in theiron, and the quality ofthe iron. It may besaid that, in genera1., thesofter the iron the lessis the loss due to hyster-esis; consequently, theiron used in armaturecores… … Fig. 153. — Portion of laminated armature corewith air duets and insulated conductors. DIRECT-CURRENT GENERATORS 219 disks are sometimes insulated from each other by thin tissuepaper, or by thin coverings of varnish or nonconducting oxide.The object of dividing the cores into disks, or laminating…
Electricity · Magnetism
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