In this paper, we developed a power amplifier system for driving a solenoid coil. The developed system consists of three units; control unit, drive unit and coil. The control unit generates a drive signal of sinusoidal wave type, monitors an operating status of the drive unit and vibration characteristics of the coil. The drive unit drives a solenoid coil in response to command from the control unit. The coil was fabricated with the size of diameter in 1.5 cm and length in 1.7 cm using electric copper wire. 4 types of drive unit were tested with thermal and vibration characteristics of the coil using temperature sensor and 3-axis accelerometer, respectively. From the result, the developed system has many advantages with respect to simple control algorithm, small size, and operates stably up to 68 watts driving condition.

• Jung-Chul Lee(School of Biomedical Engineering, Research Institute of Biomedical Engineering, College of Biomedical & Health Science, Konkuk University) | 이정철
• Sung-Jun Park(School of Biomedical Engineering, Research Institute of Biomedical Engineering, College of Biomedical & Health Science, Konkuk University) | 박성준
• Ul-Ho Jeong(School of Biomedical Engineering, Research Institute of Biomedical Engineering, College of Biomedical & Health Science, Konkuk University) | 정율호
• Sang-Pyo Hong(School of Biomedical Engineering, Research Institute of Biomedical Engineering, College of Biomedical & Health Science, Konkuk University) | 홍상표
• Mi-Hyun Choi(School of Biomedical Engineering, Research Institute of Biomedical Engineering, College of Biomedical & Health Science, Konkuk University) | 최미현
• Hyun-Joo Kim(School of Biomedical Engineering, Research Institute of Biomedical Engineering, College of Biomedical & Health Science, Konkuk University) | 김현주
• Na-Rae You(School of Biomedical Engineering, Research Institute of Biomedical Engineering, College of Biomedical & Health Science, Konkuk University) | 유나래
• Soon-Cheol Chung(School of Biomedical Engineering, Research Institute of Biomedical Engineering, College of Biomedical & Health Science, Konkuk University) | 정순철
• Hyung-Sik Kim(School of Biomedical Engineering, Research Institute of Biomedical Engineering, College of Biomedical & Health Science, Konkuk University) | 김형식 교신저자