详细介绍了各种三极管的资料，覆盖面很全，希望对大家有所用处-Detailed information on a variety of transistors, coverage is very wide, hope you all have a useful

三极管开关电路设计详细过程详细描述了三极管用作开关管的设计详细过程-Detailed process design of transistor switching circuit is described in detail the design of the transistor switch for detailed process