波形发生器设计报告.doc

摘要
(1)纯硬件设计波形发生器:采用运算放大器加分立元件来实现。
(2)实验的目的:能够产生正弦波、方波和三角波
(3)工作原理:主要是通过波形转换形成三种波形
①通过RC振荡器(文氏电桥振荡器)产生正弦波,在实验的过程当中,可以加入负反馈稳幅支路,以此保证波形不出现明显的失真。
②正弦波通过滞回比较器产生方波;
③方波通过一个积分器产生三角波。即将滞回比较器与一个积分器首尾相接形成正反馈闭环系统,这样,经上一级输出的方波经由积分器积分可得到三角波。
(4)模拟方案实现框图

积分器
滞回比较器
RC桥式正弦波振荡电路
正弦波方波三角波
最终设计成的波形放大器能够对三种波形的幅值、频率进行简单的调节,并且实现相位的可调功能。
关键词:函数波形发生器;RC桥式正弦波振荡电路;滞回比较器;积分器
Abstract
(1) waveform generator: pure hardware design using operational amplifier with ponent.
(2) experimental objective: can produce sine wave, square wave and triangular wave
(3) working principle: mainly through waveform transformation form three types of waveforms
A through the RC oscillator wien bridge oscillator) generate sine wave, the process of the experiment, add feedback stability of branch, so that doesn't appear obvious distortion of waveform.
B sine wave through a parator generate square wave;
C square wave generated by an integrator triangle wave. The parator and an integrator head-tail form positive feedback closed-loop system, so that the output of square wave at the next higher level via the integrator integral triangle wave can be obtained.
(4) to simulate the implementation scheme
Sine square wave, triangle wave
Final design into the waveform amplifier to three kinds of waveform amplitude, frequency, simple adjustment, and the implementation phase of the adjustable function.
Key words: function waveform generator; RC bridge sine wave oscillator circuit; parator; integrator
目录
第一章 RC桥式正弦振荡电路……………………………………………………………..4
RC桥式正弦振荡电路的介绍………………………………………........................................4
………………………………………………………..5
第二章滞回比较器...……………………………………………………...........................6
滞回比较器…………………………………………………………………………………..6
第三章方波和三角波发生器……………………………………………...............................7
…………………………………………………………………………..7
…………………………………………………………………………………...8
电路软件仿真效果………………………………………………………………………9
参考文献……………………………