29 Sept 2018

Schmitt Trigger - Schmitt Trigger circuit - Applications, Waveforms & Simulation of Schmitt Trigger

This video is about structure and working of Schmitt Trigger. It uses a online circuit simulator software to create simulation of Schmitt Trigger. Waveforms of schmitt trigger circuit are also shown here.
Here you will learn the basic working principle and structure of Schmitt Trigger. 
Schmitt Trigger can convert sine waves into square waves. Applications of Schmitt Trigger are also discussed here.

Schmitt trigger is a comparator circuit with hysteresis implemented by applying positive feedback to the non inverting input of a comparator or differential amplifier.
Schmitt trigger circuit is an active circuit. It can convert an analog signal applied to its input into a digital output signal.
Schmitt trigger contains the term  'trigger' because the output in retains its a value until the input changes sufficiently to trigger a change.
In the non inverting configuration, the output is high when the input is higher than a chosen threshold while the output is low when the input is below a different (lower) threshold. The output retains its value when the input is between the two levels. This duel threshold action is known as hysteresis. It implies that memory is possessed by the Schmitt Trigger. Therefore the Schmitt Trigger can function as a  flip flop or latch (bistable multivibrator). It is possible to interconvert a schmitt trigger and a latch into each other.
Schmitt Trigger devices find applications in signal conditioning, closed loop negative feedback configurations to implement relaxation oscillators, switching power supplies and function generators.

Attributes: https://www.falstad.com/circuit/

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