Question
Download Solution PDFFor which of the following functions can a Schmitt trigger be used?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFSchmitt trigger:
- A Schmitt trigger is a comparator circuit with hysteresis implemented by applying positive feedback to the noninverting input of a comparator or differential amplifier.
- In the non-inverting configuration, when the input is higher than a chosen threshold, the output is high.
- When the input is below a different (lower) chosen threshold the output is low, and when the input is between the two levels the output retains its value.
- if we use the Schmitt Trigger for the noisy input signal we will get a correct input of two pulses because of the two different thresholds.
- The main function of the Schmitt Trigger is to convert noisy square waves, sine waves, or slow edges inputs into s.
Comparison of the action of an ordinary comparator (a) (one threshold) and a Schmitt trigger (b) on a noisy analog input signal is shown in the figure:
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