Question
Download Solution PDFThe input signal of a common drain amplifier is applied to the Gate through the __________.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFConfiguration of MOSFET amplifier
1.) Common drain amplifier
- In the Common Drain configuration, the input is applied to the Gate and its output is taken from the Source.
- The input signal is applied to the gate through a coupling capacitor, and the output signal is coupled to the load resistor through the other capacitor.
- A common-drain amplifier is also called a source-follower. Self-biasing is used in this particular circuit.
2.) Common source amplifier
- In the Common source configuration, the input is applied to the Gate and its output is taken from the drain.
- This configuration provides a 180° phase shift between input and output.
3.) Common gate amplifier
- In the Common gate configuration, the input is applied to the source, and its output is taken from the drain.
Properties of MOSFET amplifier
|
Amplifier |
Input Resistance |
Output Resistance |
Voltage gain |
Current gain |
|
Common source |
High |
High |
High |
High |
|
Common drain |
Low |
High |
High |
1 |
|
Common gate |
High |
Low |
<1 |
High |
Last updated on May 29, 2025
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