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一、问题的提出为了把微型计算机用于测试、数据处理、显示和集中控制,首先就是采集必要的数据。此外生产过程本身是比较复杂的,而且信号所处的环境往往是比较恶劣的,干扰和噪声往往很大,放大器的作用除了将采集到的微弱信号(毫伏级)进行放大,增强功率外,还要能够抑制干扰和降低噪声,并满足数字脉冲响应时间的需要。使得所采集的信号有足够大的电平,而且是实时和不失真的。
First, the question raised In order to use the microcomputer for testing, data processing, display and centralized control, the first is to collect the necessary data. In addition, the production process itself is more complex, and the signal is often in the harsh environment, interference and noise are often large, the role of the amplifier will be collected in addition to the weak signal (millivolts) to amplify and enhance power, But also be able to suppress interference and reduce noise, and meet the needs of digital pulse response time. Making the collected signal has a large enough level, but also real-time and not distorted.