SUMMATTA, C.; SONASANG, S. Improvement of APWM Switching Function with Positive Saw-tooth Waveform for AC Choppers . Journal of Advanced Development in Engineering and Science, Babgkok, Thailand, v. 13, n. 36, p. 1–13, 2023. Disponível em: https://ph03.tci-thaijo.org/index.php/pitjournal/article/view/575. Acesso em: 10 oct. 2026.