Question
Download Solution PDFIn a Common Base Configuration, BJT has _______ input impedance and ________output impedance.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFCommon base configuration:
Input Terminal Emitter – Base (EB)
Output Terminal Collector – Base (CB)
Since for Amplification Application in BJT
EB Junction → Forward Biased (Low Impedance)
CB Junction → Reversed Biased (High Impedance)
Various transistor configurations and their characteristics are shown in the table
|
Characteristics |
CB configuration |
CE configuration |
CC configuration |
|
Input resistance |
Very low (40 Ω) |
Low (50 Ω) |
Very high (750 kΩ) |
|
Output resistance |
Very high (1 MΩ) |
High (10 kΩ) |
Low (50 Ω) |
|
Current Gain |
Less than unity |
High (100) |
High (100) |
|
Voltage Gain |
Very large |
High |
1 (approx) |
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