Question
Draw typical output characteristics of an n-p-n transistor in CE configuration. Show how these characteristics can be used to determine output resistance.
Solution
The output characteristics of an n-p-n transistor in CE configuration are shown below:
Output resistance is defined as the ratio of change in collector-emitter voltage to change in collector current at a constant base current. The reciprocal of the slope of the linear part of the output characteristics represents the output resistance.