A kind of driving circuit of the stepper motor adopting permanent flow and cut waves technology was introduced,for which TRC was used to control the voltage of power in order to improve the frequencies characteristic of stepper motor.

• 介绍一种采用了恒流斩波技术的步进电机驱动电路 ,该电路的电源电压使用TRC (TimeRationControl)控制来改善步进电机的频率特性 ;