This circuit is from an old documentation, making use of an operational of the time. The circuit can be adapted to use modern components. The power supply must be symmetrical.
June 2017 - The new ROHM stepper control evaluation kit can now be purchased from Mouser...
This is a typical common emitter amplifier stage configuration. The transistor can be used...
This circuit can reduce the voltage of a source by providing regulated adjustable output. The...