论文部分内容阅读
在日常生活中,常常需要在有限距离内的甲乙两地进行通话联系,往往要安装一部有线对讲机来实现这一目的。但一般现有的对讲机在收听和对讲时需要手动控制进行呼叫和对讲转换,这不仅给使用带来很多麻烦,而且还容易造成通话表达不完整等弊病。对此,利用普通电话机加装的简易控制装置可以较好地解决这一问题。本文介绍的电话控制装置附加简单的电子线路及继电器,无需任何手动控制来自动完成电话的振铃、连锁等功能,使用极为方便,经实际应用
In daily life, it is often necessary to make calls between Party A and Party B within a limited distance. A wired walkie-talkie is often installed for this purpose. However, the conventional walkie-talkie requires manual control for calling and intercom switching when listening to and intercom, which not only brings a lot of troubles for use but also easily causes the call expression to be incomplete. In this regard, the use of ordinary telephone installation of simple control device can be a better solution to this problem. This article describes the telephone control device attached to simple electronic circuits and relays, without any manual control to automatically complete the ringing of the phone, chain and other functions, the use of extremely convenient, practical application