Study and simulation of protection circuits for bipolar transistor amplifiers used in the design of high-fidelity audio amplifiers. LT-Spice will be used for simulations. The results obtained will be reported and discussed in a quantitative and qualitative manner. Gradual introduction that begins with the study of the audio signal up to the construction of the final stage of the amplifier. A graphical design of the circuits is proposed based on the linearized SOA (Safe Operating Area) of the transistor. The circuits are simulated using sine waves and an audio track with high crest factor. Comparative simulations of the protection circuits are provided to choose the right protection circuit based on the load.
Studio e simulazione di circuiti di protezione per amplificatori a transistor bipolari impiegati nella realizzazione di amplificatori audio ad alta fedeltà. Si utilizzerà LT-Spice per le simulazioni. Saranno riportati e discussi i risultati ottenuti in maniera quantitativa e qualitativa. Introduzione graduale che ha inizio nello studio del segnale audio fino alla realizzazione dello stadio finale dell'amplificatore. Viene proposto un dimensionamento grafico dei circuiti basato sulla SOA linearizzata del transistor. Si simulano i circuiti con sinusoidi ed una traccia audio ad elevato fattore di cresta. Si svolgono simulazioni comparative fra i circuiti di protezione.
Circuiti di protezione per amplificatori audio ad alta fedeltà
MARINI, SIMONE
2024/2025
Abstract
Study and simulation of protection circuits for bipolar transistor amplifiers used in the design of high-fidelity audio amplifiers. LT-Spice will be used for simulations. The results obtained will be reported and discussed in a quantitative and qualitative manner. Gradual introduction that begins with the study of the audio signal up to the construction of the final stage of the amplifier. A graphical design of the circuits is proposed based on the linearized SOA (Safe Operating Area) of the transistor. The circuits are simulated using sine waves and an audio track with high crest factor. Comparative simulations of the protection circuits are provided to choose the right protection circuit based on the load.| File | Dimensione | Formato | |
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https://hdl.handle.net/20.500.12608/89359