An elementary book on electricity and magnetism and their applications . nsion coils are sandwiched to-gether. Figure 254 shows a small shell-type transformer. The iron core in each type of trans-former forms a continuous iron circuitaround the coil, and yet the laminationsare not built in one piece, since thiswould involve winding the coil upon thecore by hand instead of its being built upindependently of the core. Each lami-nation is made of two or more pieces(Fig. 255), and these are so stacked thatevery other one is reversed. Thus, bythis alternation of the joints, the core,when built up a
An elementary book on electricity and magnetism and their applications . nsion coils are sandwiched to-gether. Figure 254 shows a small shell-type transformer. The iron core in each type of trans-former forms a continuous iron circuitaround the coil, and yet the laminationsare not built in one piece, since thiswould involve winding the coil upon thecore by hand instead of its being built upindependently of the core. Each lami-nation is made of two or more pieces(Fig. 255), and these are so stacked thatevery other one is reversed. Thus, bythis alternation of the joints, the core,when built up and clamped together, hasbut little more reluctance than it wouldhave if each lamination were in one piece. The most modern type is really a modification of the coretype, with which are combined many of the advantages ofthe shell type. It has the windings or coils on one leg of thecore, while the other leg is divided into four parts, symmetri-cally placed around the center leg, on which the coils are placed, as shown infigure 256. In thistype it is possible to Mica Shi. Fig. 254. — A small shell-type transformer. Ironlaminations vertical. §|c |l| 0 c o a 11 o c Fig. 255.— Lamina-tions of iron corebuilt of pieces.
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectmagnetism, bookyear19
