The circuit shown below is the linear equivalent model of a two-input single-output amplifier. Note that it contains a current dependent voltage source.
Figure 7-1
One application of this amplifier is in a communications circuit where its two inputs are driven by two antennas. We can model the two antennas as two current sources: iIN1 and iIN2, as shown below.
Figure 7-2
The elements in the circuit have the following values: R=3kΩ and rm=3kΩ
Assuming that iN1=1mA and iN2=0A, what is the value of vOUT in Volts?
3
incorrect
Assuming that iN1=0A and iN2=1mA, what is the value of vOUT in Volts?
3
incorrect
Assuming that iN1=1mA and iN2=1mA, what is the value of vOUT in Volts?
3
incorrect
Assuming that Input 2 is left as an open circuit, what is the Thevenin equivalent resistance (in kOhms) seen from Input 1?
6
correct
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