1.

An amplifier is designed using fixed bias configuration, what is its input impedance (source Resistor is un bypassed)?

A. R<sub>D</sub>+r<sub>d</sub>
B. R<sub>G</sub>
C. R<sub>D</sub> || r<sub>d</sub>
D. 0
Answer» C. R<sub>D</sub> || r<sub>d</sub>


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