How does a sound amplifier work? What are the electronics behind this technology? In this video, I will explain the basic structure of a linear audio amplifier and show you the amplification stages, which performance parameters each stage affects in the amplifier's operation, and what the differences are between classes A, B, AB, and G/H. At the end of the video, I also give two killer tips on how to delve even deeper into this field and really understand everything there is to know about amplifiers. ????????‍???? Free Course on the Technology behind power amplifiers: https://cursos.eltgeral.com.br/cursos... Books to specialize in sound amplifiers and make amazing projects: ???? Bob Cordell (Designing Audio Power Amplifiers) - https://amzn.to/3f8wLrh ???? Douglas Self (Audio Power Amplifier Design) - https://amzn.to/3eEvt8G ???? Randy Slone (High-Power Audio Amplifier Construction Manual) - https://amzn.to/3xW0sV8 ???? Link to the article on the Eletrônica Geral website: https://eltgeral.com.br/como-funciona... Video chapters: 0:32 - Linear Amplifiers vs Switched Amplifiers 1:44 - What is an audio amplifier? 2:20 - What are the stages of an amplifier? 2:57 - The input stage of an amplifier 3:57 - What parameters of the amplifier are responsible for the input stage? 6:26 - The voltage amplifier stage (VAS) 7:23 - Why do we need the power stage? 8:00 - The power stage of audio amplifiers 8:34 - The trade-off of audio amplifiers - Fidelity vs Efficiency 10:33 - Amplification classes of audio amplifiers 10:52 - Class A amplifiers 11:40 - Class B amplifiers 12:42 - Class AB amplifiers 13:25 - Class G/H amplifiers 15:48 - Two killer tips to learn more about audio amplifiers ------------------------------------------------------------------------------------------------------------------------ The General Eletrônica channel is an educational channel dedicated to teaching you real Electronics and completely free of charge. We produce high-quality video lessons and descriptive videos on electronic technology to provide better training to those interested in developing their professional skills in the field of analog and power electronics. Professor Thiago de Oliveira is an adjunct professor in the Department of Electronic Engineering at UFMG, one of the best teaching and research institutions in Electrical Engineering in the country, and a managing member of the Power Electronics Group at UFMG, a research group dedicated to the research and development of static converters. With over 12 years of experience teaching electronics, Professor Thiago brings a didactic view of electronics concepts in order to convey the necessary content, without telling half the story, but in an uncomplicated way. Come learn real electronics with us and become an increasingly better and more qualified professional. Free Power Amplifier Course: https://eltgeral.com.br/circuitos-ele... Best Books to Learn Electronics - https://eltgeral.com.br/quais-os-melh... Follow us on Facebook: @EltGeral Follow us on Instagram: @elt_geral Visit our website: eltgeral.com.br #eletronicageral #amplificadores #amplificadordesom #engenhariadesom #classeA #classeB #classeAB #classeG #classeH