Position sensing for rotor in hybrid stepper motor

Positional information generating apparatus and code means there

Positioning method and apparatus therefor

Positioning system

Power controller with a modular power output

Power module for electronic control of a DC motor

Precision drive assembly for telescopes and other instruments

Precision X-Y positioner

Printer carrier driving method

Proportional motor circuit

Pseudo half-step motor drive method and apparatus

Pulse to step error sensing circuit

Pulse to step motor stabilizing circuit

Quiet drive control and interface apparatus

Record feeding apparatus and method

Recording apparatus

Recording apparatus

Recording apparatus

Recording apparatus

Recording apparatus with a step motor controlling mechanism