Simulasi Active Filter dan Sistem Kerja Rangkaian Dalam Meredam Harmonisa pada Vacuum Casting Induction Furnace Dengan Daya 9 kW 13.8 kVA 200 V 3 Fasa 50/60 Hz - Tanoto, Yusak; Faculty of Industrial Technology, Petra Christian University (Institute of Research and Community Outreach, 2005)