82 



ELECTRICAL MACHINERY 



Fig. 44 shows a four-pole wave winding there being 22 

 inductors and only two brushes and two paths. The 

 method of connecting the different inductors together 

 gives the wave winding. Instead of going from 9 to 12 and 



Back connections dotted lines 

 Front connections full lines 



FIG. 43. Simple Lap Winding for Four-pole Machine. 



then back to 7, as in the lap winding of Fig. 42, this wave 

 winding continually goes forward, i.e., from 9 to 14 and 

 then to 19. If the winding were spread out on a flat 

 surface it would have a wave appearance. 



