范文编号:DQ038 范文字数:11684,页数:20 附任务书,开题报告,文献综述,外文翻译 摘 要 随着社会经济的发展,人民群众生活水平不断提高,继电器在工程,机械,电子,电气领域起着重要的作用,继电器是一种电子控制器件,它具有控制系统(又称输入回路)和被控制系统(又称输出回路),通常应用于自动控制电路中,它实际上是用较小的电流去控制较大电流的一种“自动开关”。故在电路中起着自动调节、安全保护、转换电路等作用。
关键词:常闭触点、固态继电器、开关
With the social and economic development, constantly improve people's living standards, the relay in the works, machinery, electronics, electrical play an important role in the field, the relay is a kind of electronic control devices, it has a control system (also known as the input circuit) and control system (also known as the output circuit), usually used in automatic control circuit, it is actually a smaller current to control a larger current "automatic switch." It plays in the automatic adjustment circuit, security protection, such as the role of the conversion circuit. 70s from the 20th century, before and after the development of a solid-state relay. Solid-state relay is a two input terminals for the other two output terminals for the four-terminal devices, the use of isolation among the input and output devices to achieve electrical isolation. With the widespread application of solid-state relay has normally open contacts and a solid-state switches, switch the birth of this field of science and technology has a very important role, is of universal relevance. This article in the normally open contacts on the basis of the study a normally closed contact of the solid-state switch, in order to adapt to market and engineering requirements.
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