Low-Frequency Discrete Power Amplifiers Circuit Design Using Linear and Nonlinear Techniques

This paper presents the structure and operation principles of lowfrequency power amplifiers using discrete components.Based on the analysis of a selected circuit configuration, formulas for the critical electrical parameters are derived, and an approach is proposed for determining the total harmonic distortion by studying in the time domain the operational principle.The obtained analytical expressions, as well as some additional conditions, are the basis of the proposed design procedure.The practical efficiency of the proposed methodology has been verified by investigating sample electronic circuits of power amplifiers at various levels of the input sine-wave signals.