ALTERNATING-CURRENT WINDING 



243 



applies to the tappings to the other ring, but the first tapping 

 must be brought out from a conductor similarly situated to con- 

 ductor No. 7, but under the next adjacent pole. This will be 

 No. 19, as there are twelve conductors per pole. Thus we take 

 tappings to the second ring from conductors 19, 43, and 67. 



It is clear that as both of the above windings are 



FIG. 284. Winding for a Six-phase Rotary Converter, Two-circuit Single-winding 

 with Ninety Conductors, Eight Poles. Pitch 11 . 



essentially continuous-current windings and are capable of being 

 tapped for alternating current, they are applicable at once to 

 rotary converter armatures, if in addition to the collector rings 

 a commutator is added connected at the proper points, which are 

 shown with short lines attached in Figs. 279 and 280. The 

 windings which we shall now proceed to consider will be referred 

 to as rotary converter windings, and it will be borne in mind 



