The Fabrication of an Amplifier Nonlinear Distortion Research Device

Haonan Zhang ； Jiaxin Zhu

《International Core Journal of Engineering》 7卷8期 (2021/08) Pp. 545-552

https://doi.org/10.6919/ICJE.202108_7(8).0078

摘要

This paper mainly introduces a circuit amplifier nonlinear distortion experimental system which is used by students of electronic circuit and related majors. First of all, from the structure and function of the system, this paper introduces the basic structure and function of the system, the parameters and application scope of the system. Secondly, the paper introduces the design of the system and analyzes the reasons for selecting various types of devices. After that, this paper analyzes the principle of analog electronic technology based on the system and the calculation formula of related parameters, and gives the corresponding circuit design process and program design process of the system. Finally, this paper carries out the corresponding experimental test and result analysis of the system, and finally verifies that the device can measure various output conditions and corresponding parameters of the nonlinear distortion of the amplifier under the condition of ensuring a certain accuracy, so as to achieve the purpose of the system design.

關鍵字

STM32 ； Amplifier Circuit ； A/D ； FFT ； THD

參考文獻

Dong Yu & Wang Lina. (2021). Study on nonlinear amplification distortion characteristics of triode. Electronic measurement (02), 48-50. Doi: 10.16520/j.cnki.1000-8519.2021.02.015.

(Japan) Suzuki Yachen, transistor circuit design (top), Zhou Nansheng, translation, 2004.

Xie Zhiyuan, Shang Qiufeng, Foundation of Analog Electronics Technology, 2011.