In a Wien-bridge oscillator, if the resistances in the positive feedback circuit are decreased, the frequency____________?
Correct answer: C. Increases
- A. Remains the same
- B. Decreases
- C. Increases
- D. Insufficient data
Explanation
For a balanced Wien bridge, the oscillation frequency is approximately f = 1/(2πRC). Decreasing the resistance reduces the RC time constant, so the frequency increases.
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