NIKOLAYEVICH SUKHANOV , Vladimir. Step up transformer. International Journal of Engineering and Technology, [S. l.], v. 13, n. 1, p. 140–142, 2024. DOI: 10.14419/jwy62b28. Disponível em: https://www.sciencepubco.com/index.php/IJET/article/view/32540. Acesso em: 10 jul. 2026.