1. Department of Instrumentation and Control Engineering, Universiti Kuala Lumpur Malaysian Institute of Industrial Technology, Kuala Lumpur, Malaysia
2. Electronic Section, British Malaysian Institute, Universiti Kuala Lumpur, Jalan Sungai Pusu, Kuala Lumpur, Selangor, Malaysia
3. Department of Electrical Engineering, Onaizah College of Engineering and Information Technology, Qassim, Saudi Arabia