Railway switch machine motor control apparatus

Rapid deexcitation system for synchronous machines with...

Rapid power response turbine

Reciprocating actuator with closed loop servocontrol

Recording and reproducing system

Regenerative brake control circuit

Regenerative brake control system for dc motor

Regenerative brake control system for dc motor

Regenerative braking circuit

Regenerative braking controller for a dc motor

Regenerative braking controller for d.c. motor

Regenerative braking methods for a hybrid locomotive

Regenerative braking system for an electric vehicle

Regenerative d.c. motor control having field and armature...

Regenerative motor control having improved field circuit

Regenerative motor control system

Regenerative motor control with improved circuit means

Regulatable and controllable inverter or frequency changer...

Regulated electrical power apparatus

Regulating apparatus