AExE01 · Chapter 1Demo2 · Set 2🏛️ Past Licensure QuestionID: cbcfbd61
What type of output waveform does an op-amp integrator produce when driven by a symmetric square wave input?
What type of output waveform does an op-amp integrator produce when driven by a symmetric square wave input?
Multiple Choice Options
- A
Sine wave
- B
Spike waveform
- C✓ Correct Option
Triangular wave
- D
Sawtooth wave
Detailed Technical Solution & Explanation
The output voltage of an ideal operational amplifier integrator is the mathematical integral of its input: . When a symmetric square wave (alternating between and ) is fed to an integrator, integrating the constant positive voltage produces a downward linear ramp, and integrating the negative voltage produces an upward linear ramp, generating a continuous triangular wave.
Option Analysis:
•
Option A (Sine wave): Incorrect. Integrating a cosine yields a sine wave, but square wave integration yields linear ramps.
•
Option B (Spike waveform): Incorrect. Differentiator output for square wave is spikes.
•
Option C (Triangular wave): Correct. Integrating a square wave generates a triangular wave.
•
Option D (Sawtooth wave): Incorrect. Symmetric square wave yields symmetric triangular wave.
Reference: Demo2 · Set 2NEC Licensure Syllabus