... working voltage 40V 3.2-phase driver. Stepper motor driver,High performance, low price [BRIEF INTRODUCTION] RB2403 ... greatly improve speed performance and output torque of motor.Once the pulse stops for 100ms,the phasecurrent ... current.I doubleFull/half current changeIdouble=on,the motor stops,the winding current is half rated ... -VPower -A+ A-Connect to motorB+ B- 3.0A 2-phase stepper motor driver