Question: In a differential amplifier, what is the output voltage equation?
Options:
Vout = (V2 - V1)(Rf/Rin)
Vout = V1 - V2
Vout = (V1 + V2)/2
Vout = V1 + V2
Correct Answer: Vout = (V2 - V1)(Rf/Rin)
Solution:
The output voltage of a differential amplifier is given by Vout = (V2 - V1)(Rf/Rin).
In a differential amplifier, what is the output voltage equation?
Practice Questions
Q1
In a differential amplifier, what is the output voltage equation?
Vout = (V2 - V1)(Rf/Rin)
Vout = V1 - V2
Vout = (V1 + V2)/2
Vout = V1 + V2
Questions & Step-by-Step Solutions
In a differential amplifier, what is the output voltage equation?
Step 1: Understand that a differential amplifier takes two input voltages, V1 and V2.
Step 2: Recognize that the output voltage (Vout) depends on the difference between these two input voltages.
Step 3: Identify that the formula for the output voltage is Vout = (V2 - V1) multiplied by a gain factor.
Step 4: The gain factor is determined by the resistors in the circuit, specifically Rf (feedback resistor) and Rin (input resistor).
Step 5: Combine these ideas into the final equation: Vout = (V2 - V1)(Rf/Rin).
Differential Amplifier Output Equation – The output voltage of a differential amplifier is determined by the difference between the two input voltages, scaled by the ratio of feedback resistance to input resistance.
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