Hi,
I have a question about calculating output impedance of common-source amplifier.
Here is part of lecture about common-source amplifier.
Source: http://whites.sdsmt.edu/classes/ee320/notes/320Lecture31.pdf
My question is about how to calculate output impedance.
Output impedance of the circuit is defined as follows:
\(Z_{out} = \frac{ V_{out} }{ I_{out} } \)
Then, why we need to use small-signal model to calculate it? I guess it is because that at the output there is only ac component, dc component is blocked by the coupling capacitor and this is why small-signal model is used here.
And there other ways to calculate the output impedance of the circuit not using small-signal model?
I have a question about calculating output impedance of common-source amplifier.
Here is part of lecture about common-source amplifier.
Source: http://whites.sdsmt.edu/classes/ee320/notes/320Lecture31.pdf
My question is about how to calculate output impedance.
Output impedance of the circuit is defined as follows:
\(Z_{out} = \frac{ V_{out} }{ I_{out} } \)
Then, why we need to use small-signal model to calculate it? I guess it is because that at the output there is only ac component, dc component is blocked by the coupling capacitor and this is why small-signal model is used here.
And there other ways to calculate the output impedance of the circuit not using small-signal model?
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