Magnetic disc apparatus

Means for digital control

Mechanical brake hold circuit for an electric motor

Method and apparatus for controlling a sewing machine

Method and apparatus for controlling an electric motor the rotat

Method and apparatus for controlling the energization of an elec

Method and apparatus for electronic braking of an electric motor

Method and apparatus for eliminating ripple component from motor

Method and apparatus for facsimile scanning

Method and apparatus for improved electronic braking of a DC mot

Method and apparatus for maximizing utilization of an electric m

Method and apparatus for operating DC motors at high efficiency

Method and apparatus for providing a stable, high gain servo sys

Method and apparatus for stopping DC motor by brake power corres

Method and apparatus for varying the speed of DC motors

Method and apparatus therefor in motor speed control

Method and circuit for DC motor field regulation with speed feed

Method and devices for detecting whether a direct-current motor

Method and drive for elevator DC drive motor stabilization

Method and means for stopping backspinning motor