基于Proteus的共射放大电路分析与研究
2016-05-19朱嵘涛徐爱钧
朱嵘涛++徐爱钧
摘要:传统的共射放大电路通常采用+12V单电源供电,在缺少直流稳压电源的情况下,无法完成实验。针对这一问题,提出了一种+5V单电源供电的共射放大电路,而+5V单电源可由USB接口提供。在结合理论分析的基础上,借助Proteus虚拟实验设计环境分析了+5V单电源供电共射放大电路的基本特性:放大倍数、输入电阻、输出电阻和频带宽度等。结果表明,使用Proteus仿真结果与硬件实验结果基本相符。先采用Proteus进行仿真设计,然后移植到硬件电路上,这种方法在实际应用中具有一定的推广价值。
关键词:共射放大电路;USB;Proteus;仿真
中图分类号:TN702 文献标识码:A 文章编号:1009-3044(2016)07-0269-03
The Analysis and Study of Common-emmitter Amplifier Circuit Based on Proteus
ZHU Rong-tao1, XU Ai-jun2
(1.Yangtze University College of Technology & Enginerring, Jingzhou 434020,China; 2.Yangtze University, Jingzhou 434023, China)
Abstract:Traditional Common-emmitter Amplifier Circuit usually adopts +12V single power supply. In the case of lack of DC Stabilied Voltage Power Supply, we cant do the experiment. In order to solve the problem, the author propose a sort of Common-emmitter Amplifier Circuit which adopts +5V single power supply. +5V single power supply can be provided by the USB interface. On the basis of thoery analysis, we study the basic characteristic of the Common-emmitter Amplifier Circuit such as Amplification Factor, Input Resistance, Output Resistance and Bandwith. The results shows that the Proteus simulation results is consistent with the hardware experiment results. The simulation is used by Proteus, and is tranplanted into hardware circuit. The method has certain promotion value in practical application.
Key words: Common-emmitter Amlifier Circuit;USB;Proteus; simulation
在传统的模拟实验教学中,共射放大电路实验通常采用+12V单电源供电,在没有直流稳压电源的情况下,共射放大电路无法正常工作,也不能微弱信号进行有效放大。在很多实际的工程应用中,经常需要采用共射放大电路对微弱的信号进行放大,若用+12V单电源供电就要为共射放大电路单独做一个电源模块,会增加成本。随着USB技术发展和成熟,USB接口已经成为了主流接口,且USB接口能够提供稳定的+5V电压。为了把理论教学和实际工程应用更紧密联系在一起,同时在兼顾成本和低功耗的前期下,本文提出了一种+5V单电源供电的共射放大电路。
1 Proteus仿真平台
Proteus软件是英国LabCenter Electronics公司出版的EDA工具软件(该软件中国总代理为广州风标电子技术有限公司)。它不仅具有其他EDA工具软件的仿真功能,还能仿真单片机及外围器件。……
