Atkinson, Philip. [from old catalog] · New York, The Century co. · leaf 160
twocoils of copper wire, a primary and a secondary,- whichare insulated from each other and from the core inthe most thorough manner. The core, instead of being DYNAMOS. 137 inclosed within the coils, partly incloses them, and iscomposed of a number of sheet-iron plates insulatedfrom each other… … Fig. 62. the cross-section in Fig. 63, so that both are equally ex-posed to its magnetic inductive influence, instead of thesecondary coil being separated from it by the primary,and hence receiving only a minor share of that influence,as in induction-coils. The fine wire coil is usually made the…
Electricity
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