| RC相移振荡器频率与起振条件微分方程法分析 |
| |
| 引用本文： | 张立.RC相移振荡器频率与起振条件微分方程法分析[J].电气电子教学学报,2011,33(1):37-39. |
| |
| 作者姓名： | 张立 |
| |
| 作者单位： | 广州番禺职业技术学院,机械与电子系,广东,广州,511483 |
| |
| 基金项目： | 国家自然科学基金项目，广州番禺职业技术学院青年科技项目 |
| |
| 摘 要： | 基于理想运放的特点,本文建立了RC相移式正弦波振荡器输出电压满足的三阶常系数微分方程.通过解三阶微分方程,给出RC相移式振荡器输出频率表达式及起振所要满足的条件.结果显示,RC相移式振荡器输出频率不仅与移相元件参数有关,还与反馈电阻有关.最后,本文还建立了集成运放RC相移式振荡器输出频率的二阶近似公式.
|
| 关 键 词： | 振荡器 移相元件 运算放大器 |
An Analysis of Output Frequencies and Starting Oscillation Conditions on RC Phase-Shift Oscillator by Differential Equation Method |
| |
| ZHANG Li.An Analysis of Output Frequencies and Starting Oscillation Conditions on RC Phase-Shift Oscillator by Differential Equation Method[J].Journal of Electrical & Electronic Engineering Education,2011,33(1):37-39. |
| |
| Authors: | ZHANG Li |
| |
| Affiliation: | ZHANG Li (Department of Mechanics and Electronic,Guangzhou Panyu Polytechnic,Guangzhou 511483,China) |
| |
| Abstract: | Based on the features of perfect operational amplifier,the third-order differetial equation satified for output-voltage is established for the RC phase-shift sine-wave oscillator.Via solving the third-order differetial equation,the expression of output frequency and the starting-oscillation condition for the RC phase-shift oscillatior are given.The result shows that,the output frequency is not only relative to the parameters of phase-shift components,but also relative to value of feedback resistance.Finally... |
| |
| Keywords: | oscillator phase-shift components operational amplifier |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
