Since the relay was a subminiature type, the coil current was relatively high, requiring a driver.
由于继电器是一种微型的类型，线圈电流相对较高，需要一名司机。
A method of stepping motor driver circuit was given, composed by a chopper type current mode switch regulator and a monolithic stepping motor driver TA8435H.
提出采用斩波式电流型开关电源结合单片式步进电机驱动器TA8435H，构成一种电机驱动电路的方案。
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