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.
双回转机的步进电机控制电路
TDA1521音频集
功率放大
衡桥式功率驱动电路,
计算机并行口经过锁
脉冲分配
。