半导体三极管除了构成放大器和作开关元件使用外，还能够做成一些可独立使用的两端或三端器件。文中介绍了三极管的几种特殊用途-Posed apart from the semiconductor transistor amplifiers and switching elements for use, but also be able to make some available for independent use of both ends, or three-terminal device. I