US PATENT SUBCLASS 388 / 854
.~.~ By voltage or current modification

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

848  DF  OPEN LOOP ACCELERATION CONTROL SYSTEM FOR DC MOTOR WITH COMMUTATOR {2}
853  DF  .~ Armature control {2}
854.~.~ By voltage or current modification

DEFINITION

Classification: 388/854

By voltage or current modification:

(under subclass 853) Subject matter wherein the control circuitry functions by adjusting the amplitude of the voltage or current applied to the input circuit of the motor.