Question
Download Solution PDFIn BJT, for common emitter configuration, the input characteristics are represented by a plot between which of the following parameters?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFWorking configurations of BJT
1.) Common emitter configuration:
In this mode, the input is given to the base whereas the output is obtained from the collector terminal keeping the emitter terminal common.
The input characteristic is plotted between input voltage and input current. The input voltage is VBE and the input current is IB.
2.) Common collector configuration:
In this mode, the input is given to the base whereas the output is obtained from the emitter terminal keeping the collector terminal common.
3.) Common base configuration:
In this mode, the input is given to the emitter whereas the output is obtained from the collector terminal keeping the base terminal common.
Additional Information Comparison between common emitter, common collector, and common base amplifier
|
Parameter |
Common emitter |
Common collector |
Common base |
|
Input Resistance |
Moderate (1 kΩ) |
High (300 kΩ) |
Low (50 Ω) |
|
Output Resistance |
Moderate (50 kΩ) |
Low (300 Ω) |
Very high (1 MΩ) |
|
Voltage gain |
High |
Small (unity) |
High |
|
Current gain |
High |
High |
Small (unity) |
|
Power gain |
High |
Moderate |
Moderate |
Last updated on Jun 16, 2025
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