[Electric engineering.] . Fig. 53. collector rings mounted on the shaft. By means of theserings the exciting current is led into the field. The stationaryarmature windings f, f (in this case shown for a single-phase 90 ELECTRIC LIGHTING. 16 machine with two slots to each pole) are held in groovesaround the inner periphery of the laminated core G, as shown,. and this core is supported by the casting L, also shown inFig. 52, attached to the base of the machine. The terminalsof the stationary winding are shown at M, Fig. 52. The § 16 ELECTRIC LIGHTING. 91 whole armature structure is arranged so t
[Electric engineering.] . Fig. 53. collector rings mounted on the shaft. By means of theserings the exciting current is led into the field. The stationaryarmature windings f, f (in this case shown for a single-phase 90 ELECTRIC LIGHTING. 16 machine with two slots to each pole) are held in groovesaround the inner periphery of the laminated core G, as shown,. and this core is supported by the casting L, also shown inFig. 52, attached to the base of the machine. The terminalsof the stationary winding are shown at M, Fig. 52. The § 16 ELECTRIC LIGHTING. 91 whole armature structure is arranged so that it may beslid along on the base so as to give access to the field andarmature coils. 97. Inductor Alternator.—Some makers have gone astep further and construct alternators without any movingwire whatever. These machines are of the inductor type, socalled because both the armature and field-exciting coils arestationary and the magnetism passing through the armaturecoils is made to vary by revolving a mass of iron called aninductor. One of the most widely used of these types is theStanley machine. These are made for several differentoutputs and Pig. 54 represents one of the larger sizes. Inthis view the two halves^, A of the stationary armatureare shown drawn back so as to allow access to the the machine is in operation, these halves
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