Plangklang, B., p Apiratikul, and K. Phumkittipich. “Development of Low-Cost Tesla Transformer for High Performance Testing 115 KV Line Post Insulator”. Frontiers in Engineering Innovation Research, vol. 1, June 2010, pp. 69-78, https://ph01.tci-thaijo.org/index.php/jermutt/article/view/242177.