MCQ Practice Question

Electronic Devices & Circuits Operational Amplifiers

A Schmitt trigger is especially useful because its hysteresis?

ACreates two switching thresholds and improves noise immunity
BMakes input resistance zero
CEliminates all propagation delay
DConverts every input directly to a sine wave

Correct Answer: A. Creates two switching thresholds and improves noise immunity

Explanation: Hysteresis provides different thresholds for rising and falling inputs, reducing unwanted switching caused by noise near a single threshold.

Reference: Standard electronics: Schmitt trigger