可适应电源电压变化的本安电话耦合器DZO－2的设计  

The Design of the Intrinsically safe Telephone Coupling Device DZO 2 Applicable to Various Power Voltages

作　　者：张民[1,2] 顾德英[1,2] 陈德增 

机构地区：[1]辽宁阜新矿业学院电气系 [2]阜新市防爆公司

出　　处：《阜新矿业学院学报》1996年第3期303-306,共4页

摘　　要：本文所设计的ＤＺＯ－２本安电话耦合器，改进了原有的ＤＺＯ－１型耦合器的弊端，可适应电源电压的变化，输入电压在１０～７０Ｖ之间变化，电路均可正常工作。此电路具有所用元件少，成本低，工作可靠，性能良好，实现容易等优点。In this paper the DZO 2 intrinsically safe telephone coupling device, gets rid of disadvantages of the former DZO 1. It can be applied to the change of power voltage and operates normally at 10 to 70 volts. The circuit has advantages such as less components,lower cost,better and reliable and easier realization. It is a new kind of design method.

关 键 词：耦合器 限流 限压 电话 电源变化 

分 类 号：TN751.1[电子电信—电路与系统]