Proudová a napěťová záporná zpětná vazba

Abstract

This bachelor thesis is about a significance of a negative feedback in electronics. Various types of negative feedbacks are analyzed here and computational relations are then derived. The theoretical knowledge is extracted from those computational relations. Features and the application of negative feedbacks in low-frequency transistor amplifiers are described. Feedbacks (current and voltage) in a single-stage BJT amplifier are then analyzed in the next part of this thesis. SNAP software is used for the analysis and its outputs are compared to the results of laboratory measurements. All of the necessary knowledge about transistor technology is described here. This is because of the explanation of the amplifier construction, which – in final – could serve for educational purposes or settling this thesis down into a wider context. Finally, achieved results, the future of this thesis and its conjunction to another projects are discussed and concluded.