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What is the major difference between the comparator (made using opamp) and schmitt trigger?
That's interesting. Can you explain more on how the output differs?
Of course. A comparator made using opamp compares two voltages and gives an output voltage that is proportional to the difference between them. This output voltage can be any value within a certain range, depending on the particular circuit design. On the other hand, a schmitt trigger has two threshold voltages, one for the positive transition and one for the negative transition. When the input voltage crosses the positive threshold, the output of the schmitt trigger switches to high, and stays high until the input voltage crosses the negative threshold, at which point the output switches to low and stays low until the input voltage crosses the positive threshold again.