| 小信号放大电路的噪声分析 |
| |
| 引用本文： | 殷铸灵,许良军.小信号放大电路的噪声分析[J].机电元件,2011(6):18-21. |
| |
| 作者姓名： | 殷铸灵 许良军 |
| |
| 作者单位： | 北京邮电大学,北京市,100876 |
| |
| 摘 要： | 传感器输出电信号很小,易受到外界噪声信号的干扰,为了有效地检测并提取微弱信号,本文采用分立元件设计了一种小信号放大电路,由差分放大电路、两级共射放大电路和推挽输出级等电路组成,不仅满足了电压放大的要求,而且有效地减小了噪声,并在实验的基础上验证了此电路的可行性.由测量结果表明,基于本设计的放大电路可以有效测量微弱信号,...
|
| 关 键 词： | 分立元件 小信号 放大电路 低噪声 |
The Analysis of Noise in Small- Signal Amplifying Circuit |
| |
| Affiliation: | YIN Zhu- ling, XU liang- jun (Beijing University of Posts and Telecommunications, Beijing, China, 100876) |
| |
| Abstract: | The noise can be interfaced easily because of the transducerg small output signal. In order to detect and extract small signal, the amplifying circuit is designed in the paper using unattached components. Differential amplifier, two common emitter circuit and push -pull output circuit are included. This amplifying circuit not only amplifies the voltage, but also reduce the noise effectively. The feasibility of this circuit is discussed by experi- ment. The experiment results show that this amplifying circuit can amplify the small signal and has lower noise. It used widely in weak signal detection |
| |
| Keywords: | unattached components ： small - signal amplifier circuit low noise |
| 本文献已被 维普 等数据库收录！ |
|
