 The magnetomotive force (MMF) of this current acts on the non-excited poles, creating a working flux (Φ) and the output voltage.As with a full-pitch Metadyne, the armature reaction of the output current is 90 degrees out of phase, and therefore opposes the original excitation.Advantages over the normal Metadyne are that the number of exciting and compensating coils is halved to two each per cycle, and the shorter pitch of the coils results in less overhang at the ends of the windings.