晶体管施密特电路的开关过程

本文研究了施密特电路的开关过程。推导出了开关过程的具体解析表达式。根据这个表达式对两种常见的晶体管施密特电路进行了数值计算。最后用实验方法验证了计算结果。实验结果与计算值总的来说相当吻合。从这个研究中得到了挑选晶体管和电路的一些原则。计算结果可以作为设计施密特电路时估计开关速度的一个依据。

THE SWITCHING PROCESS OF A TRANSISTOR SCHMITT CIRCUIT

The switching process of transistor Schmitt circuit was studied in this paper. Concrete analytical expressions of the switching process have been derived. Using these expressions numerical calculations were carried out for two types of commonly used transistor Schmitt circuit. Experiments were carried out to check the theoretical calculations. Experimental results fit the theoretical calculations quite well. From this study, some rules for selection of the transistors and circuit elements were obtained. The results of calculation in this paper may be used to estimate the switching speed of Schmitt eircuit in the early design stage.