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Electronic ohmmeter uses OP-AMP as a/an:
- a)Summer
- b)Multiplier
- c)Integrator
- d)Buffer amplifier
Correct answer is option 'D'. Can you explain this answer?
Most Upvoted Answer
Electronic ohmmeter uses OP-AMP as a/an:a)Summerb)Multiplierc)Integrat...
Concept of Buffer:
- A Buffer is an op-amp circuit whose output voltage straight away follows the input voltage. i.e. output voltage equivalent to the input voltage.
- The Op-amp circuit does not provide any amplification thus, its voltage gain is unity.
- The voltage follower is used as a buffer amplifier, isolation amplifier, unity gain amplifier as the output follows the input.
- The voltage follower provides no alternation or no amplification but only buffering.
Characteristics:
- High input impedance and Low output impedance hence low loading effect and used in Electronics measuring instruments
- Current Gain & power gain high
- Voltage gain unity
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Electronic ohmmeter uses OP-AMP as a/an:a)Summerb)Multiplierc)Integrat...
Buffer Amplifier
A buffer amplifier is used to isolate the ohmmeter circuit from the impedance of the device being measured. In the case of an electronic ohmmeter, the op-amp is configured as a buffer amplifier to prevent loading effects on the measurement circuit.
Role of OP-AMP in a Buffer Amplifier
- The OP-AMP in a buffer amplifier has a high input impedance, which prevents current from flowing into the measurement circuit.
- It has a low output impedance, which allows it to drive the output signal without affecting the measurement accuracy.
- The OP-AMP ensures that the voltage at the input terminal is the same as the voltage at the output terminal, providing isolation between the measurement circuit and the device under test.
Advantages of Using OP-AMP as a Buffer Amplifier
- Improved accuracy: By isolating the measurement circuit, the buffer amplifier prevents errors caused by loading effects.
- Increased reliability: The high input impedance of the OP-AMP ensures that the measurement circuit is not affected by the impedance of the device under test.
- Better signal integrity: The low output impedance of the OP-AMP allows it to drive the output signal without distortion or loss of signal quality.
In conclusion, using an OP-AMP as a buffer amplifier in an electronic ohmmeter helps to improve accuracy, reliability, and signal integrity in resistance measurements.
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Electronic ohmmeter uses OP-AMP as a/an:a)Summerb)Multiplierc)Integratord)Buffer amplifierCorrect answer is option 'D'. Can you explain this answer? for Electrical Engineering (EE) 2026 is part of Electrical Engineering (EE) preparation. The Question and answers have been prepared according to the Electrical Engineering (EE) exam syllabus. Information about Electronic ohmmeter uses OP-AMP as a/an:a)Summerb)Multiplierc)Integratord)Buffer amplifierCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Electrical Engineering (EE) 2026 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Electronic ohmmeter uses OP-AMP as a/an:a)Summerb)Multiplierc)Integratord)Buffer amplifierCorrect answer is option 'D'. Can you explain this answer?.
Electronic ohmmeter uses OP-AMP as a/an:a)Summerb)Multiplierc)Integratord)Buffer amplifierCorrect answer is option 'D'. Can you explain this answer? for Electrical Engineering (EE) 2026 is part of Electrical Engineering (EE) preparation. The Question and answers have been prepared according to the Electrical Engineering (EE) exam syllabus. Information about Electronic ohmmeter uses OP-AMP as a/an:a)Summerb)Multiplierc)Integratord)Buffer amplifierCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Electrical Engineering (EE) 2026 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Electronic ohmmeter uses OP-AMP as a/an:a)Summerb)Multiplierc)Integratord)Buffer amplifierCorrect answer is option 'D'. Can you explain this answer?.
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