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电话作为最基本的通信手段已经走进了城乡的千家万户,电话机的故障也随着其广泛使用而在不断增加。为了准确判定和排除电话机故障,笔者设计并制作了一台话机检测仪,在这里介绍给业余爱好者或厂商。 一、本机特点 本机采用了11个集成块,结构紧凑,灵敏度高,故障率低。采用自动复位电路,操作简单方便,省去了繁琐的人工复位。单数码管显示待测话机拨号,显示直观,造价低廉,容易制作。体积小巧,所有元件安装在14cm×10cm×6cm的小盒内,便于携带。
Telephone as the most basic means of communication has entered the urban and rural areas tens of thousands of households, telephone failures also continue to increase with its widespread use. In order to accurately determine and rule out the phone failure, I designed and produced a phone detector, introduced here to amateurs or manufacturers. First, the machine features The machine uses 11 integrated blocks, compact structure, high sensitivity, low failure rate. The use of automatic reset circuit, easy operation, eliminating the need for cumbersome manual reset. Single digital display to be measured phone dialing, intuitive display, low cost, easy to make. Small size, all components installed in 14cm × 10cm × 6cm small box, easy to carry.