High performance microstepping driver rvfm p402a the rvfm stepping motor driver 40v 2a is a high performance microstepping driver suitable for 2 phase and 4 phase hybrid steppersequipped with an advanced bipolar constant current chopper circuit and current control technology this well designed driver also has a motor that is suited to motion control applications requiring low noise low vibration high speed and high precision suitable for 4 6 or 8 lead wire motors this unique rvfm