Ginting, S., Napitupulu, R., Halawa, J. and Sianturi, L. (2019) “Pengujian Alat Pembangkit Listrik Tenaga Surya Solar Cell Sederhana”, SPROCKET JOURNAL OF MECHANICAL ENGINEERING, 1(1), pp. 34-43. doi: https://doi.org/10.36655/sproket.v1i1.35.