{HEAD ~ The relative winding polarities} of the upper primary winding L2, lower primary winding L1 and {TAIL ~ secondary winding Ls} are indicated in a conventional manner by the dots  
of
{ HEAD ~ The relative winding polarities } of the upper primary winding L2 , lower primary winding L1 and { TAIL ~ secondary winding Ls } are indicated in a conventional manner by the dots
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH