ANGGUN NURQOIRUN NISA; INOVA ASIA AWANTARI; MUHAMMAD FAJRI ILHAM; ADITYA GADHAN NATHA HARAHAP; ALBATHINA NOVIRNA. The Role of Bipolar Junction Transistors (BJT) in Audio Signal Amplification for Bluetooth Speaker. Metallurgical Engineering and Materials Innovation, [S. l.], v. 1, n. 2, p. 11–25, 2025. Disponível em: https://journal.itk.ac.id/index.php/memi/article/view/8481381. Acesso em: 21 jan. 2026.