System for conditioning air, method of operating such, and circu
System for controlling motor speed
System for controlling the rotation of a DC motor
System for controlling the speed of a magnetic tape transport mo
System for controlling the speed of an electric motor
System for driving a direct-current motor in synchronism with an
System for driving a motor
System for driving DC motor
Tachogenerator processing circuits and motor speed control syste
Tachometer check apparatus
Tachometer system
Tachometric measuring device for direct-current motors, and moto
Tape deck
Tape drive motor control circuit
Target tracking system
Tension controlling
Torque compensation system
Transistor control device for power transistor chopper
Transistor motor control
Transit vehicle chopper control apparatus and method