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.
双回转机构的步进电机控制电路由TDA1521音频集成功率放大器组成平衡桥式功率驱动电路，由计算机并行口经过锁存器构成脉冲分配器。
Using the characteristic of integrated operational amplifier, an electric bridge circuit sensor without nonlinear error in its output voltage is designed.
利用集成运算放大器的特点，设计了输出电压无非线性误差的电桥电路传感器。
Three methods used for improving resistive bridge amplifier are introduced in this paper.
在构成基本型电阻电桥传感放大器的基础上给出了三种改善其性能的方法。
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