Acknowledgments The author would like to gratefully acknowledge the guidance and encouragement of Mr. Billy Chow, the project supervisor, whose contributions further piqued my interest to delve further circuit simulation issues and feed me ideas to improve the design and testing process. Success indicates the correct direction of this project. Executive Summary The aim of the project is to research and analyze the DC DC converter for proper coil gun application. In this project the DC converters have different types and characteristics. Four types of them, namely Buck, Boost, Buck-Boost and Cuk converter, are being introduced and studied and compared. In project 4A, the high voltage DC DC boost converter circuit implementation was simulated using PSIM software. PSIM software is widely adopted by universities, consultants, research centers, companies, etc. This software is the fastest simulator for power electronic circuits. It can simulate large, complex power converters and control systems in a short time. Following the development of the 4B design, the circuit will be modified to improve the output ripple waveform and improve the feedback loop to control the output voltage. Furthermore, the converter is adopted based on the measurement and comparison between power circuits in simulation time. IndexNo. Description Page1. Introduction 42. Background 53. Literature search 3.1 Type of DC DC converter 6-114. Technical work 4.1 Objective specifications 124.2 Implementation of DC DC boost converter 12-154.3 Design and implementation of 555 integrated circuit 15-184.4 Implementation of high voltage DC DC boost converter 19-205. Project Plan 216. Discussion and Conclusion ...... middle of the document ...... circuit in the PSIM software database. Therefore, design the equivalent IC to match the high voltage DC DC boost converter. Then, the output waveform of the circuit is successfully designed and simulated. But it is the combination of the boost converter that the simulation results of the output waveform presents some problem for the boost converter. The voltage and current of the output stage are still rising and have not been interrupted for a long time. In 4B design, it is necessary to improve the problem because the voltage and current of the output stage cannot stop and the ripple waveform. This is necessary to complete the work of designing, improving and simulating the booster converter, final project presentation, demonstration and writing the final project report. Although it would be a big challenge because I have to work during the day and can only spend the night on the project.