| Abstract |
The bipolar transistor has become a key component in power electronics. The need is not only increasing but it is also becoming diversified. Firstly, the author shows the physical laws which govern the behavior of transistors and the limitations caused by circuits. Secondly, the author analyzes the principle requirements of motor drives, UPS, converters, and other such equipment, showing that the required characteristics lead to very different performances for bridge leg switches. Finally, from this analysis, the author classifies transistors into different transistor groups well-adapted to specific technical needs. Progress in different areas, integration, new methods of diffusion, and general market trends will create new trends for the future. |
