The driving circuits adopt constantcurrent chopping for the purpose of improving rotating torque and increasing working efficiency of the stepper motor.
驱动电路采用恒流斩波方式，提高了步进电机的运转扭矩和工作效率。
2
This paper proposes an energy saving control mode for current source inverter(CSI) induction motor drive system with the motor driving a constant power load.
The trigger PCB consists of two parts, first (upper half of the schematic) the trigger and constant-current LED drive and second (lower half) the PWM motor current controller.