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 the field coil 721, which in {HEAD ~ turn}, increases the torque on the impeller for {TAIL ~ the benefit} of increasing 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 the field coil 721 , which in { HEAD ~ turn } , increases the torque on the impeller for { TAIL ~ the benefit } of increasing the average armature voltage
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