低频信号发生器的设计  

Design of Low-frequency Signal Generator

作　　者：张晓增[1] 赵曰峰[1] 董鸿江[2] 

机构地区：[1]山东师范大学物理与电子科学学院,山东济南250014 [2]山东滕州卷烟厂,山东滕州277500

出　　处：《现代电子技术》2009年第6期1-3,共3页Modern Electronics Technique

基　　金：国家863计划高技术领域资助项目(2002AA135030)

摘　　要：信号发生器广泛应用于电子工程、通信工程、自动控制、遥测控制、测量仪器、仪表和计算机等技术领域。采用集成运放和分立元件相结合的方式,利用迟滞比较器电路产生方波信号,以及充分利用差分电路进行电路转换,从而设计出一个能变换出三角波、正弦波、方波的简易信号发生器。通过对电路分析,确定了元器件的参数,并利用Multisim软件仿真电路的理想输出结果,克服了设计低频信号发生器电路方面存在的技术难题,使得设计的低频信号发生器结构简单,实现方便。该设计可产生低于10 Hz的各波形输出,并已应用于实验操作。Signal generator is widely used in measurement, communication, auto - control and other electric fields. Combining integrated operational amplifier with discrete components,the hysteresis comparator is used to generate the square wave, and the differential circuit is used to converse the signals. So a simple signal generator is designed, which can generate three wave such as triangular wave, sine wave and square wave. The parameters of the circuit are tested and recognized. Multi- sire software simulates the output of the three waves. The technique problems of the low - frequency signal generator are solved. It proves that the circuits can generate the signals frequency lower than 10 Hz,which can be applied in practical test and measurement.

关 键 词：信号发生器 方波信号 电路仿真 迟滞比较器 

分 类 号：TN958.98[电子电信—信号与信息处理]