Programmable servo motor speed control apparatus

Propulsion control system for electrically powered vehicles

Propulsion motor control apparatus and method

Propulsion system for electrical vehicle

Propulsion system for vehicles with a d-c machine

Protective means for feeder of machinery with DC-motor

Pulse controllers

Pulse generating device for regulating the rotational speed of a

Pulse width modulated power amplifier for direct current motor c

Pulse width modulation control circuit

Pulse width modulation speed control

Pulse-width modulation drive circuit

Pulsed power supply

Pulsed X-ray tube motor

Pulsewidth modulated pressure control system for chemical vapor

PWM motor operating system with RFI suppression

Refrigeration system and control therefor

Regenerative motor control with improved circuit means

Revolution speed controller using both analog and digital contro

Rotary body control apparatus