ISRO Electronics & Communication (ECE) 2014 - Question 68

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Topic: Analog Circuits

When a sinusoidal voltage wave drives a Schmitt Trigger, the output is a

  • A. Triangular wave
  • B. Rectified sine wave
  • C. Rectangular wave
  • D. Trapezoidal wave

Answer: C. Rectangular wave

Explanation: A Schmitt trigger is a regenerative comparator. When driven by an analog signal such as a sinusoidal wave, it triggers at defined upper and lower threshold levels, converting the input into a rectangular (or square) wave at the output.

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