论文部分内容阅读
在测量、仪表、计算技术、自动控制、无线电通信、遥控和遥测等领域中,广泛应用着方波发生器电路。目前,在电子学领域内,最常用的 RC 方波发生器,其方波频率并不与 R 或 C 成线性关系,因而,一般无法用调节 R 或 C 的方法来线性地调节方波的频率。本文介绍一种可用电阻 R 来线性地调节方波频率 f 的方波发生器电路,该电路还具有结构简单、易于安装调整等特点,所以它在电子仪表和控制系统中,有着一般 RC 方波发生器电路所无法比拟的优越性。一、电路方案的构思一个基本的方波发生器电路,如图1所示。经过简单地分析,不难求得该电路的输出方波频率 f 为
Square-wave generator circuits are widely used in the fields of measurement, instrumentation, computing technology, automation, radio communications, remote control and telemetry. At present, the square wave frequency of the most commonly used RC square wave generator is not linear with R or C in the field of electronics. Therefore, it is generally impossible to adjust the square wave frequency linearly by adjusting R or C . In this paper, we introduce a square wave generator circuit that can linearly adjust the square wave frequency f by using the resistor R. The circuit also has the characteristics of simple structure, easy installation and adjustment, so it has the general RC square wave in the electronic instrument and control system Generator circuit can not match the superiority. First, the concept of circuit solutions A basic square wave generator circuit, shown in Figure 1. After a brief analysis, it is not difficult to find the output of the circuit square wave frequency f