Closed Loop Speed Control System For Dc Motor With Commutator Patents (Class 388/800)
- By pulse width or duty cycle modification (Class 388/819)
- By phase or frequency modification (Class 388/820)
- By voltage and current modification (Class 388/821)
- By voltage modification (Class 388/822)
- By current modification (Class 388/823)
- By variable impedance (e.g., potentiometer) (Class 388/824)