ECE3161 Analogue Electronics - MUM S2 2025 Course Materials & Test Answers | learning.monash.edu

Q6. Find the output gain in terms of input signals

For the ideal op-amp given below, what is $V_{out}$ V_{out}, if the input waveform is sinusoidal with the form $A \text{sin}(\omega t)$ A \text{sin}(\omega t), where A>0 and $\omega>0$ \omega>0. Assume the diode D1 is a precision ideal diode so that it is fully conducting with no resistance for positive voltage and open circuit for reverse voltage, both applied from anode to cathode.

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$V_{out} = A \text{sin}(\omega t)$ V_{out} = A \text{sin}(\omega t) when $A \text{sin}(\omega t) >0$ A \text{sin}(\omega t) >0 , and $V_{out} = -A \text{sin}(\omega t)$ V_{out} = -A \text{sin}(\omega t) when $A \text{sin}(\omega t) < 0$ A \text{sin}(\omega t) < 0

$V_{out} = -A \text{sin}(\omega t)$ V_{out} = -A \text{sin}(\omega t) when $A \text{sin}(\omega t) >0$ A \text{sin}(\omega t) >0 , and $V_{out} = (1 - \frac{R_2}{R_1})A \text{sin}(\omega t)$ V_{out} = (1 - \frac{R_2}{R_1})A \text{sin}(\omega t) when $A \text{sin}(\omega t) < 0$ A \text{sin}(\omega t) < 0

$V_{out} = (1 + \frac{R_2}{R_1})A \text{sin}(\omega t)$ V_{out} = (1 + \frac{R_2}{R_1})A \text{sin}(\omega t) when $A \text{sin}(\omega t) >0$ A \text{sin}(\omega t) >0 , and $V_{out} =- (1 + \frac{R_2}{R_1})A \text{sin}(\omega t)$ V_{out} =- (1 + \frac{R_2}{R_1})A \text{sin}(\omega t) when $A \text{sin}(\omega t) < 0$ A \text{sin}(\omega t) < 0

$V_{out} = (1 - \frac{R_2}{R_1})A \text{sin}(\omega t)$ V_{out} = (1 - \frac{R_2}{R_1})A \text{sin}(\omega t) when $A \text{sin}(\omega t) >0$ A \text{sin}(\omega t) >0 , and $V_{out} = (1 + \frac{R_2}{R_1})A \text{sin}(\omega t)$ V_{out} = (1 + \frac{R_2}{R_1})A \text{sin}(\omega t) when $A \text{sin}(\omega t) < 0$ A \text{sin}(\omega t) < 0

$V_{out} = A \text{sin}(\omega t)$ V_{out} = A \text{sin}(\omega t) when $A \text{sin}(\omega t)>0$ A \text{sin}(\omega t)>0 , and $V_{out} = (1 + \frac{R_2}{R_1})A \text{sin}(\omega t)$ V_{out} = (1 + \frac{R_2}{R_1})A \text{sin}(\omega t) when $A \text{sin}(\omega t) < 0$ A \text{sin}(\omega t) < 0

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ECE3161 Analogue Electronics - MUM S2 2025

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