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