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v0.1.0
c4adfb8e · ·Two-stage Audio Amplifier - Initial release This repository contains the full design and documentation for a portable two-stage audio amplifier. The design pairs a TL071 active band-pass summing amplifier for voltage gain with an OPA551 output stage for current drive. The amplifier targets approximately 3 Vpp output into an 8 Ω speaker and supports single-supply operation from a 9 V PP3 battery or a 12 V DC adapter using a mid-supply bias network. What is included: - Design calculations and supporting derivations for filter and gain selection - Proteus schematics and PCB layout files - Measured frequency responses, test data and photographs - Diagrams, exported media and SVG assets for assembly and presentation - Project report and journal documenting the design process Licence: MIT (see the LICENSE file) For reproduction or queries, please open an issue.