Thomälen, Adolf, 1865-, Thomälen Adolf. Kurzes Lehrbuch der Electrotechnik. English · London, E. Arnold · leaf 89
. The lifting power of a magnet is often largely affected by magneticleakage, which we have here neglected. We shall now consider what happens when an electromagnet attractsits armature. We shall assume that the magnetisation curves of the magneticcircuit, both before and after the attraction of… … being l-^jz before and IJ2 after attraction. The travel of the armature is then(^1 — ^2)/2- If the winding is connected to mains of constant p.d. the current-turns will have the same valueafter as before. In Fig. 65 OErepresents the current-turns andOA and OB the original and sub-sequent values of…
Electrical engineering
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