Likewise, when the average voltage of the sampled, filtered DC waveform at node 704 recedes below a given threshold, the feedback control increases the average current passing through {TAIL ~ the field coil} 721, which in turn, increases the torque on the impeller for the benefit of increasing {HEAD ~ the average armature voltage} 
Likewise , when the average voltage of the sampled , filtered DC waveform at node 704 recedes below a given threshold , the feedback control increases the average current passing through { TAIL ~ the field coil } 721 , which in turn , increases the torque on the impeller for the benefit of increasing { HEAD ~ the average armature voltage }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH 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 OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD