Question 144Electricity & Electronics - 1st Asst/Chief
70% to passAs shown in figures "A", "B", and "C" of the illustration, what is the purpose of the differential amplifier segment of the 741 operational amplifier? Illustration EL-0111
Adetect and amplify the voltage difference between the inputs at pins 1 and 2
Bdetect and amplify the voltage difference between the inputs at pins 1 and 5
Cdetect and amplify the voltage difference between the inputs at pins 2 and 3
Ddetect and amplify the voltage difference between the inputs at pins 3 and 5
AI Explanation
The correct answer is C) detect and amplify the voltage difference between the inputs at pins 2 and 3. The purpose of the differential amplifier segment in a 741 operational amplifier is to detect and amplify the voltage difference between the two input pins, which are pins 2 and 3. This differential amplifier configuration allows the op-amp to amplify the difference between the two input signals, which is a key function of operational amplifiers. The other answer choices are incorrect because they do not correctly identify the input pins that the differential amplifier is designed to monitor and amplify the voltage difference between.
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