Summatta C, Sonasang S. Improvement of APWM Switching Function with Positive Saw-tooth Waveform for AC Choppers . J. Adv. Dev. Eng. Sci. [internet]. 2023 Apr. 30 [cited 2026 Apr. 22];13(36):1-13. available from: https://ph03.tci-thaijo.org/index.php/pitjournal/article/view/575