A Schmitt trigger circuit is an electronic circuit that serves as a signal conditioning device, primarily used to convert a noisy or slowly-changing input signal into a well-defined digital output signal. It's commonly employed in applications where noise immunity and signal stability are crucial, such as in digital systems, signal processing, and various automation processes. The Schmitt trigger's main purpose is to ensure that the output transitions occur at precise voltage levels, regardless of the input signal's noise or fluctuations.
The fundamental purpose of a Schmitt trigger circuit is to create hysteresis in the input-output relationship. Hysteresis refers to the phenomenon where the output state of