To control stepping motors, the balance bridge power drive circuit is made up by TDA1521 integrated audio power amplifier, the pulse allotter is made up by the parallel ports of computer and latches.
双回转构的步进电
控制电路由TDA1521音频
率放大器组
平衡桥式
率驱动电路,由计算
并行口经过锁存器构
脉冲分配器。