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.
双回转机构的步进机控制
路
TDA1521音频集
放大器组
平
桥式
驱动
路,
计算机并行口经过锁存器构
脉冲分配器。