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。

youdao

This paper introduce a method that industry control computer controls power amplifier in the satellite earth station, and expound the structure of the hardware and software of the control system.

介绍了用工业控制计算机控制卫星地面站功率放大器的一种方法，阐述了控制系统的硬件和软件基本组成。

youdao

The system is composed of the electro-actuating mechanism, oil pump of high pressure, disc brake, pressure sensor, amplifier, interface circuit, computer and printer.

该系统主要由电动执行机构、高压油泵、盘式制动器、压力传感器、放大器、接口电路、计算机及打印机等组成。

youdao