I know that the input impedance of the following amp is approximately 15K.
I would like to calculate the impedance mathematically but I am not sure
what the ac equivalent circuit looks like. I realize that connections to VCC
are considered to be at AC ground and capacitors are considered to be
shorts. Then I am lost.
I would like to calculate the impedance mathematically but I am not sure
what the ac equivalent circuit looks like. I realize that connections to VCC
are considered to be at AC ground and capacitors are considered to be
shorts. Then I am lost.
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