Simulation and Analysis of the Common-Emitter Circuit in Analog Electronics Teaching

Abstract

Common-emitter (CE) circuits are the basic and important amplifiers in analog electronics. Theoretical analysis of the CE circuit is carried out to calculate the Q-point, the voltage gain, the input impedance and the output impedance. The CE circuit is simulated to make the analysis of DC operating point analysis, DC sweep analysis, AC analysis and amplitude of output voltage. The simulation results are consistent with the theoretical calculation. It is concluded that a virtual simulation on electronic circuits with Multisim 10 can be easily built and test without the restriction of hardware devices. Multisim 10 provides students with a good experimental platform, and makes them convenient to do experiments, demonstrate and analyze circuits in the process of analog electronics teaching.KeywordsAnalog electronicsCommon-emitter circuitsQuiescent pointElectronics design automationAC analysis