LTspice在双极型晶体管电路学习中的应用

Application of LTspice in BJT Circuit Learning

使用LTspice仿真,验证双极型晶体管电路的静态工作点、放大倍数、输入电阻、输出电阻、输入和输出电压的计算数值,观察波形,能够实现抽象器件的具体化、估算模型结果的精确化。分析了软件仿真与近似估算之间的误差的产生原因,并从数据上做了验证。根据器件模型,讨论了参数调整的方法,实现了更好的数据匹配。基于免费的工具,得到工业级软件的仿真结果,有助于电子电路的进一步学习、分析和设计。

By means of LTspice simulation,the static operating point,magnification,input resistance,output resistance,input voltage and output voltage of bipolar transistor circuit are verified. Observing the waveform can realize the concretization of the abstract device and the accuracy of estimation modelresults. The causes of the error between software simulation and approximate estimation are analyzed and verified from the data. According to the device model,the method of parameter adjustment is discussed,and better data matching is realized. Based on the free tools,the simulation results of industrial software are obtained,which is helpful to the further study,analysis and design of electronic circuits.