Primary causes of voltage fluctuations that affect industrial optical sorters. A quasi-experimental study. SJ Engineering Africa, [S. l.], v. 3, n. 2, p. 13, 2026. DOI: 10.51168/kcd3yp79. Disponível em: https://engineering.sjpublisher.org/index.php/eng/article/view/14. Acesso em: 15 apr. 2026.