1. Department of Electrical and Power Engineering, Higher Technical Teacher Training College HTTTC, The University of Bamenda, Bambili, Cameroon
2. Department of Electrical and Electronic Engineering, National Higher Polytechnic Institute (NAHPI), The University of Bamenda, Bambili, Cameroon
3. Department of Electrical and Electronic Engineering, College of Technology (ColTech), The University of Bamenda, Bambili, Cameroon
4. Laboratoire de Genie Electrique, Mécatronique et Traitement du Signal, ENSPY, University of Yaoundé I, Yaoundé, Cameroon