晶体管特性图示仪主要由哪几个部分组成？各部分作用如何？ -题库考试答案搜索网

晶体管特性图示仪主要由哪几个部分组成？各部分作用如何？

问答题

2022-03-04 14:24

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正确答案

晶体管特性图示仪主要组成部及各部分作用：
（1）基极阶梯波信号发生器：提供必要的基极注入电流。
（2）集电极扫描电压发生器：提供从零开始可变的集电极电源电压。
（3）同步脉冲发生器：用来使基极阶梯信号和集电极扫描电压保持同步，使其正确稳定地显示图形（特性曲线）。
（4）测试转换开关：当测试不同接法和不同类型的晶体管特性曲线和参数时，用此开关进行转换。
（5）放大器和显示电路：用以显示被测晶体管的特性曲线，其作用原理和电路形式与普通示波器基本相同，所以也可用普通示波器代替。
（6）电源：为各部分电路提供电源电压。

试题解析

标签：大学试题工学电子测量动力与电气工程

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