Nikola Tesla - Free-Energy Devices

viINVENTIONS OF NIKOLA TESLA.Fig. 49, the field circuits A and B being of different self-induction,there will always be a greater lag of the current in one than theother, and that, generally, the armature phases will not correspondwith either, but with the resultant of both. It is thereforeimportant to observe the proper rule in winding the armature.For instance, if the motor have eight poles four in each circuitthere will be four resultant poles, and hence the armaturewinding should be such as to produce four poles,in order to constitutea true synchronizing motor.The diagram, Fig. 50, differs from the previous one only inrespect to the order of connections. In the present case the armature-coil,instead of being in series with the field-coils, is in multiplearc therewith. The armature- winding may be similar tothat of the field that is to say, the armature may have two ormore coils wound or adapted for different self-induction andFIG. 52.adapted, preferably, to produce the same difference ofphase as the field-coils. On starting the motor the shuntis closed around both coils. This is shown inFig. 51, inwhich the armature coils are K