2025-09-252025-09-252025-09-02PEREIRA, Lucas Ferreira. Fabricação de um protótipo de gerador de arco elétrico sonoro de alta tensão utilizando multivibrador astável e modulação ASK. Orientador: André Felipe Souza da Cruz. 2025. 47 f. Trabalho de Curso (Bacharelado em Engenharia Elétrica) – Faculdade de Engenharia Elétrica, Campus Universitário de Tucuruí, Universidade Federal do Pará, Tucuruí, 2025. Disponível em: https://bdm.ufpa.br/handle/prefix/8613. Acesso em:.https://bdm.ufpa.br/handle/prefix/8613This work presents the development, construction, and characterization of a high-voltage generator prototype using Amplitude Shift Keying (ASK) modulation. The system comprises three main blocks: an astable multivibrator oscillator for generating the 15 kHz carrier, a Flyback transformer for voltage step-up, and an Arduino microcontroller responsible for generating the digital modulation signal. The circuit enables the reproduction of specific sound frequencies through the electric arc, implementing the plasma-acoustic transduction technique. Experimental measurements were carried out using a digital oscilloscope for temporal and spectral analysis of the generated signals, as well as dielectric breakdown experiments to estimate the output voltage of the Flyback transformer, reaching approximately 22.4 kV. The prototype demonstrated proper operation, operational safety, and fidelity in carrier modulation. The results highlight the integrated application of knowledge in electronics, programming, and high-voltage techniques, demonstrating the skills developed throughout the electrical engineering program and consolidated in this capstone project, which may be expanded in future works with more advanced modulation techniques and controlled high-voltage signal amplification.Acesso AbertoAlta tensãoModulação ASKFlybackTransdução plasma-acústicaHigh voltageASK modulationPlasma–acoustic transductionCNPQ::ENGENHARIAS::ENGENHARIA ELETRICA::CIRCUITOS ELETRICOS, MAGNETICOS E ELETRONICOS::CIRCUITOS ELETRONICOSTrabalho de Curso - Graduação - MonografiaAttribution-NonCommercial-NoDerivs 3.0 Brazil