Omega Engineering
Stepper Drives
3440i-Step-Motor-Drive

Programmable Step Motor Indexer/Drive, Microstepping ,12/42 Vdc
The 3405i is a Step Motor Indexer/Drive with 8 inputs and 3 outputs. Provides Up to 3.5 A per Phase and Microstepping to 50,800 Steps per Revolution. Optional RS485.
STAC6-Srs-Stepper-Drives

High Performance Stepper Drives with Integrated Power Supply
STAC6 series are Hi Performance Stepper Drives w/ Integrated Power Supply. Features include Self Test and Auto Setup, Anti-resonance,Command signal/torque Ripple smooting.
ST-Srs-Stepper-Drives

High Performance Stepper Drives with Advanced Features
ST-Series are Hi Performance Stepper Drives W/ Advanced Features and Control Options. "-S" models are step and direction drives, and "-Si" models are stand-alone prog. drives
STR-Srs-Stepper-Drives

Step and Direction Stepper Drives with 3 input/1 output
STR Series are digital step and direction drive with 2 A/phase, 4 A/phase and 8 A/phase. Anti-Resonance and Waveform Damping control algorithms.They have 3 inputs/1 output.