Multiple choice

OPAMP is provided in the Wien Bridge Oscillator to provide which feature?

  1. 180 degree phase shift between input and output stages

  2. Amplifications to the sinusoidal oscillations

  3. Sustained oscillations

  4. Damped oscillations

  5. OPAMP is not used in the oscillator
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The OPAMP is in amplification mode to provide the required current gain to remove the damping effect on the output so that the output will have a constant amplitude and constant frequency output. This is sustained oscillations.

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