Linear and Non-linear Applications of Op-amp
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Questions and Answers

What is the primary purpose of an Inverting Amplifier?

  • To provide a negative voltage gain (correct)
  • To amplify the voltage difference between two input signals
  • To provide a positive voltage gain
  • To integrate the input signal with respect to time
  • Which type of amplifier combines multiple input voltages with different gains to produce a single output voltage?

  • Integrator
  • Differential Amplifier
  • Voltage Follower
  • Summing Amplifier (correct)
  • What is the function of an Instrumentation Amplifier?

  • To amplify the voltage difference between two input signals
  • To create a digital switching circuit with hysteresis
  • To provide high common-mode rejection ratio (CMRR) for measurement and instrumentation applications (correct)
  • To integrate the input signal with respect to time
  • What type of amplifier uses a capacitor in the feedback loop to integrate the input signal with respect to time?

    <p>Integrator</p> Signup and view all the answers

    What is the primary function of a Comparator with Hysteresis (Schmitt Trigger)?

    <p>To create a digital switching circuit with hysteresis</p> Signup and view all the answers

    What is the primary function of a comparator in digital circuits?

    <p>To compare two input voltages and produce a digital output</p> Signup and view all the answers

    What is the gain of a non-inverting amplifier determined by?

    <p>The ratio of the feedback resistor to the input resistor</p> Signup and view all the answers

    What is the concept that assumes the voltage between the inverting and non-inverting inputs is virtually zero?

    <p>Virtual short circuit</p> Signup and view all the answers

    What is the primary difference between an inverting and non-inverting amplifier?

    <p>The phase relationship between the input and output voltages</p> Signup and view all the answers

    What is the function of a sample and hold circuit?

    <p>To sample an analog input voltage and hold it for a specific period</p> Signup and view all the answers

    What is the primary function of a voltage follower circuit?

    <p>To maintain the same voltage level as the input</p> Signup and view all the answers

    What is the purpose of the feedback resistor in a voltage follower circuit?

    <p>To provide unity feedback</p> Signup and view all the answers

    What is the output voltage of an integrator circuit proportional to?

    <p>The integral of the input voltage over time</p> Signup and view all the answers

    What is the characteristic of an integrator circuit at low frequencies?

    <p>Low-frequency dominance</p> Signup and view all the answers

    What is the assumption made about the op-amp in the analysis of the voltage follower?

    <p>All of the above</p> Signup and view all the answers

    What is the primary function of a differentiator circuit?

    <p>To perform mathematical differentiation of the input signal with respect to time</p> Signup and view all the answers

    What is the purpose of a capacitor in a differentiator circuit?

    <p>To cause the circuit to perform differentiation</p> Signup and view all the answers

    What is the primary function of a differential amplifier?

    <p>To amplify the difference between two input voltages</p> Signup and view all the answers

    What is the output voltage of a simple inverting adder circuit?

    <p>Vout = -(R1RfV1 + R2RfV2 + R3RfV3)</p> Signup and view all the answers

    What is the purpose of an op-amp configured as an adder or subtractor?

    <p>To perform addition or subtraction of multiple input signals</p> Signup and view all the answers

    What is the primary function of an adder-subtractor circuit?

    <p>To perform both addition and subtraction operations</p> Signup and view all the answers

    What is the output voltage of a log amplifier configuration?

    <p>Proportional to the logarithm of the input voltage</p> Signup and view all the answers

    What is the purpose of diode clipping in electronic circuits?

    <p>To intentionally clip parts of a signal</p> Signup and view all the answers

    What is the consequence of amplitude clipping in analog audio systems?

    <p>Loss of information in the clipped portions</p> Signup and view all the answers

    What is the limitation of log and antilog amplifier configurations?

    <p>They are limited by the specific characteristics of the diode used</p> Signup and view all the answers

    What happens when a digital signal exceeds the maximum representable value?

    <p>It is truncated at the maximum value, causing distortion</p> Signup and view all the answers

    What is the effect of clipping on the signal in audio applications?

    <p>It leads to a harsh or gritty sound</p> Signup and view all the answers

    What is the purpose of clamping in electronic circuits?

    <p>To shift the DC level of the signal to a desired voltage level</p> Signup and view all the answers

    What is the difference between positive and negative clamping circuits?

    <p>The direction of the DC level shift</p> Signup and view all the answers

    What is one of the applications of clamping circuits in video signal processing?

    <p>To set the black level in video signals</p> Signup and view all the answers

    What is the primary function of a clamping circuit?

    <p>To generate specific waveforms with desired DC levels</p> Signup and view all the answers

    What is the role of the capacitor in a clamping circuit?

    <p>To store and release charge during different parts of the input signal cycle</p> Signup and view all the answers

    What is the purpose of a comparator circuit?

    <p>To compare two input voltages</p> Signup and view all the answers

    What is the configuration of an op-amp used as a comparator?

    <p>Open-loop with positive feedback</p> Signup and view all the answers

    What is the output of an inverting comparator when V1 > V2?

    <p>Saturates negatively</p> Signup and view all the answers

    What determines the output of an inverting comparator?

    <p>The comparison of the input voltages</p> Signup and view all the answers

    What is the output of an inverting comparator when V1 < V2?

    <p>Saturates positively</p> Signup and view all the answers

    What is the purpose of positive feedback in an op-amp comparator?

    <p>To enable the op-amp to compare two input voltages</p> Signup and view all the answers

    What determines the choice of component values in a clamping circuit?

    <p>The specific requirements of the application</p> Signup and view all the answers

    What is the typical output of an inverting comparator?

    <p>A waveform that swings between positive and negative saturation levels</p> Signup and view all the answers

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