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A differential amplifier, amplifies
- a)and mathematically differentiates the average of the voltages on the two input lines.
- b)and differentiates the sum of the two input waveforms.
- c)the difference of voltages between the two input lines.
- d)and differentiates the input waveform on one v line when the other line is grounded.
Correct answer is option 'C'. Can you explain this answer?
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Verified Answer
A differential amplifier, amplifiesa)and mathematically differentiates...
The goal of designing differential amplifiers is to minimize the effect of common-mode input signal and amplify the difference of the voltages between the two input lines.
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A differential amplifier, amplifiesa)and mathematically differentiates...
Answer:
Differential amplifiers are commonly used in electronic circuits to amplify the difference in voltage between two input lines. They are often used in applications such as instrumentation amplifiers, operational amplifiers, and communication systems. In these applications, the differential amplifier serves to amplify and extract the desired signal while rejecting common-mode noise and interference.
The correct answer for this question is option 'C', which states that a differential amplifier amplifies the difference of voltages between the two input lines. Let's discuss why this is the correct answer in detail.
Differential Amplifier Principle:
A differential amplifier consists of two input lines, labeled as Vin1 and Vin2, and one output line, labeled as Vout. The differential voltage is the voltage difference between Vin1 and Vin2 (Vin1 - Vin2). The output voltage is proportional to this differential voltage, and it is given by the equation Vout = Ad * (Vin1 - Vin2), where Ad is the differential gain of the amplifier.
Explanation of Option 'C':
Option 'C' states that a differential amplifier amplifies the difference of voltages between the two input lines. This means that the amplifier takes the voltage on Vin1 and subtracts the voltage on Vin2 to find the difference, and then amplifies this difference to produce the output voltage.
This characteristic of a differential amplifier is what makes it useful in applications where the desired signal is contained in the difference between two input signals. By amplifying only the difference and rejecting any common-mode noise or interference that is present on both input lines, the differential amplifier can extract the desired signal with high accuracy.
Other Options:
Let's briefly discuss why the other options are not correct:
- Option 'A' states that a differential amplifier mathematically differentiates the average of the voltages on the two input lines. This is not true because a differential amplifier does not perform mathematical differentiation.
- Option 'B' states that a differential amplifier differentiates the sum of the two input waveforms. This is also not true because a differential amplifier does not perform mathematical differentiation on the sum of the input waveforms.
- Option 'D' states that a differential amplifier differentiates the input waveform on one line when the other line is grounded. This is not true because a differential amplifier does not perform mathematical differentiation on the input waveform.
In conclusion, the correct answer is option 'C' because a differential amplifier amplifies the difference of voltages between the two input lines. This characteristic allows the amplifier to extract the desired signal while rejecting common-mode noise and interference.
Differential amplifiers are commonly used in electronic circuits to amplify the difference in voltage between two input lines. They are often used in applications such as instrumentation amplifiers, operational amplifiers, and communication systems. In these applications, the differential amplifier serves to amplify and extract the desired signal while rejecting common-mode noise and interference.
The correct answer for this question is option 'C', which states that a differential amplifier amplifies the difference of voltages between the two input lines. Let's discuss why this is the correct answer in detail.
Differential Amplifier Principle:
A differential amplifier consists of two input lines, labeled as Vin1 and Vin2, and one output line, labeled as Vout. The differential voltage is the voltage difference between Vin1 and Vin2 (Vin1 - Vin2). The output voltage is proportional to this differential voltage, and it is given by the equation Vout = Ad * (Vin1 - Vin2), where Ad is the differential gain of the amplifier.
Explanation of Option 'C':
Option 'C' states that a differential amplifier amplifies the difference of voltages between the two input lines. This means that the amplifier takes the voltage on Vin1 and subtracts the voltage on Vin2 to find the difference, and then amplifies this difference to produce the output voltage.
This characteristic of a differential amplifier is what makes it useful in applications where the desired signal is contained in the difference between two input signals. By amplifying only the difference and rejecting any common-mode noise or interference that is present on both input lines, the differential amplifier can extract the desired signal with high accuracy.
Other Options:
Let's briefly discuss why the other options are not correct:
- Option 'A' states that a differential amplifier mathematically differentiates the average of the voltages on the two input lines. This is not true because a differential amplifier does not perform mathematical differentiation.
- Option 'B' states that a differential amplifier differentiates the sum of the two input waveforms. This is also not true because a differential amplifier does not perform mathematical differentiation on the sum of the input waveforms.
- Option 'D' states that a differential amplifier differentiates the input waveform on one line when the other line is grounded. This is not true because a differential amplifier does not perform mathematical differentiation on the input waveform.
In conclusion, the correct answer is option 'C' because a differential amplifier amplifies the difference of voltages between the two input lines. This characteristic allows the amplifier to extract the desired signal while rejecting common-mode noise and interference.
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A differential amplifier, amplifiesa)and mathematically differentiates the average of the voltages on the two input lines.b)and differentiates the sum of the two input waveforms.c)the difference of voltages between the two input lines.d)and differentiates the input waveform on one v line when the other line is grounded.Correct answer is option 'C'. Can you explain this answer?
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