Ritwik 2 We would like to express sincere gratitude to our guide Dr. G.S. Punekar, Department of Electrical and Electronics Engineering, for giving us an opportunity to work under his guidance which is invaluable. His unflinching support, suggestions, directions have helped in smooth progress of the project work. His keen insight into the subject has helped us in solving many problems during this work. He has been a constant source of inspiration in all possible ways for successful completion of our project. We are extremely grateful to our beloved HOD Mr. Jora M. Gonda, Department of Electrical and Electronics Engineering, NITK, Surathkal, for his encouragement and providing us with sufficient computational facilities to successfully complete the project work. We express our heartfelt thanks to all the teaching and non-teaching staff of the Department of Electrical and Electronics Engineering for full co-operation and assistance. Finally, we thank all those who helped us directly or indirectly for the successful completion of this project. The aim of this project is to conduct tests on different types of commercially available fan regulators, observe their practical limits of power quality(mainly harmonics) and compare them with internationally accepted IEEE standards. Also, to implement a fan regulator circuit using a combination of TRIAC and DIAC and compare its harmonic content with commercially available regulators.