. Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons' cyclopaedia of applied mechanics . The field-magnets areseparately excited. The energy consumed forthis purpose does not, as a rule, exceed 2 percent of the maximum outi)Ut of the rotating the soft-iron inductor-blocks be-fore the respective poles of the field-magnetsand armature-bobbins, rapid periodic rever-sals of the polarity of the armature bobbin-pole are effected. This produces alternating currents in the armature-coils. Between the
. Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons' cyclopaedia of applied mechanics . The field-magnets areseparately excited. The energy consumed forthis purpose does not, as a rule, exceed 2 percent of the maximum outi)Ut of the rotating the soft-iron inductor-blocks be-fore the respective poles of the field-magnetsand armature-bobbins, rapid periodic rever-sals of the polarity of the armature bobbin-pole are effected. This produces alternating currents in the armature-coils. Between the in-ductor-blocks and the above-mentioned pole-pieces there is only just sufficient clearance toallow of free rotation ; consequently the resistance of the magnetic circuit of the air-space isa minimum, while the soft character of the iron in the inductor-blocks and the magni^ andarmature-cores tends also to make this loss as small as possible, thus producing a very efficientmachine at a low speed. Fig. lOG illustrates the Kennedy alternator. The machine very much resembles a trans-former in its parts, and is about as simple in construction. The iron field-magnet portions. Fig. 105.—Inductor-wheel.
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Keywords: ., bookcentury1800, bookdecade189, booksubjectmechanicalengineering
