US PATENT SUBCLASS 388 / 822
.~.~ By voltage modification

Current as of: June, 1999
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388 /   HD   ELECTRICITY: MOTOR CONTROL SYSTEMS

800  DF  CLOSED LOOP SPEED CONTROL SYSTEM FOR DC MOTOR WITH COMMUTATOR {4}
816  DF  .~ Analog armature control {6}
822.~.~ By voltage modification

DEFINITION

Classification: 388/822

By voltage modification:

(under subclass 816) Subject matter wherein the control circuit functions by determining the voltage relationship between a reference signal and a feedback signal and by applying an adjustment, based on this relationship, to the motor input.