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我们国家在电炉设计和生产中,不断地采用新技术,使电炉性能有了很大提高,但是在时控方面,仍是个薄弱环节。笔者经过认真的研究,设计出各种功能的数字定时器及报警器。本文介绍一种具有双程定时功能的数字式定时器及电子音乐讯响器,在工业电炉上应用,获得良好的效果。一、定时及报警实用控制线路现以箱式电阻炉为例介绍如下:数字式双程定时器及音乐讯响器统一都安装在电炉控制柜上,如图1所示。工作方式选择开关采用三刀五位转换开关,布
Our country in the furnace design and production, the continuous use of new technologies, the performance of the furnace has greatly improved, but when the control is still a weak link. After careful study, I designed a variety of functions of the digital timer and alarm. This article introduces a digital timer with dual-channel timer function and electronic music sounder, applied in industrial electric furnace, get good results. First, the timing and alarm control circuit is a practical box-type resistance furnace is now an example as follows: Digital two-way timer and the music annunciators are unified installed in the furnace control cabinet, shown in Figure 1. Working mode selector switch with three knives five switch, cloth