Op-Amp Comparators Quiz
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Questions and Answers

What are operational amplifiers often used as in the context described?

  • Current regulators for power systems
  • Signal amplifiers for audio applications
  • Frequency modulators for radio transmission
  • Comparators to compare voltage amplitudes (correct)

    • How is the inverting input of the op-amp used in the application?

  • Used to amplify the input signal
  • Connected to the reference voltage
  • Disconnected to create an open loop
  • Grounded to produce a zero level (correct)

    • What happens when a very small difference voltage between the two inputs drives the amplifier into saturation?

  • The output voltage goes to its limit (correct)
  • The output voltage decreases to zero
  • The amplifier shuts down automatically
  • The input voltage is reversed

    • How can the operational amplifier be used to produce a square wave from a sine wave?

    <p>By driving the amplifier into saturation</p> Signup and view all the answers

    How can the zero-level detector be modified to detect positive and negative voltages?

    <p>By connecting a</p> Signup and view all the answers

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