Speed control system for alternating current induction motors

Speed control system for motors operated in parallel

Speed control unit for direct current electric motor with...

Speed controlled inverter generator

Speed controller for mill drives and the like

Speed controls for electric motors

Speed detection and control

Speed governors for prime movers

Speed reducing apparatus for a cloth spreading machine

Speed reducing control system for a polyphase electric motor

Speed reducing control system with voltage regulation for a...

Speed regulating devices for rotary machines or the like

Speed regulator

Speed sensitive control circuit

Speed sensitive field weakening control for traction motors

Speed sensitive field weakening control for traction motors

Speed sensitive field weakening control for traction motors

Spikeless motor starting circuit

Stabilizing phase controlled ac induction motors

Stabilizing scheme for an a-c electric motor drive- system