| 负反馈放大电路的计算及 Multisim 12仿真 |
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| 引用本文： | 赵华峰.负反馈放大电路的计算及 Multisim 12仿真[J].渭南师范学院学报,2014(15):18-22. |
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| 作者姓名： | 赵华峰 |
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| 作者单位： | 渭南师范学院物理与电气工程学院,陕西渭南714099 |
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| 基金项目： | 陕西省军民融合项目：基于模糊自整定PID算法的张力控制系统的研究（12JMR17）;渭南师范学院特色学科建设项目研究成果 |
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| 摘 要： | 负反馈放大电路的计算在电路分析和设计时经常用到，为此首先进行负反馈放大电路计算的理论分析，给出常用的计算方法和近似估算方法，然后对一个常用的带负反馈的放大电路在Multisim12上进行仿真，仿真时要考虑反馈网络对基本放大器输入、输出端的负载效应的影响，经过对仿真波形和数据的分析计算，表明闭环和开环仿真得到的增益之间的关系、通频带之间的关系都和理论分析吻合得很好。
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| 关 键 词： | 负反馈放大电路 负载效应 Multisim12 |
Calculation of Negative Feedback Amplifying Circuit and Simulation Based on Multisim12 |
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| ZHAO Hua-feng.Calculation of Negative Feedback Amplifying Circuit and Simulation Based on Multisim12[J].Journal of Weinan Teachers College,2014(15):18-22. |
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| Authors: | ZHAO Hua-feng |
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| Institution: | ZHAO Hua-feng (School of Physics and Electrical Engineering, Weinan Normal University, Weinan 714099, China) |
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| Abstract: | The calculation of negative feedback amplifying circuit is often used in the circuit design or analysis. Therefore at first the theoretical calculation of negative feedback amplifying circuit was introduced. The general calculation and approximate estimation methods were given. Then the common circuit with negative feedback amplification was simulated in Muhisiml2. It was considered that the impact of load effect existed in the input and output port of feedback network on basic amplifier. After the analysis and calculation of simulation the waveforms and data, it shows that the relationship between closed loop and opened loop circuit to gain and frequency band is in good agreement with theoretical analysis. |
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| Keywords: | negative feedback amplifying circuit load effect Multisiml2 |
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