1. Universiti Malaysia Sarawak (UNIMAS),Faculty of Engineering,Dept. of Electrical and Electronic Eng.,Kota Samarahan,Sarawak,Malaysia
2. Universitas Negeri Padang (UNP),Faculty of Engineering,Dept. of Electrical and Electronic Eng.,Padang,West Sumatera,Indonesia
3. Universiti Malaysia Sarawak (UNIMAS),Faculty of Engineering,Dept. of Electrical Engineering,Kota Samarahan,Sarawak,Malaysia
4. Universitas Lacang Kuning (UNILAK),Faculty of Engineering,Department of Electrical Engineering,Rumbai,Riau,Indonesia
5. Jakarta Global University,Faculty of Eng. and Information System,Dept. of Electrical Engineering,Depok,Indonesia