Schmitt Trigger Positive Feedback

273

06:47:57

Shows how a Schmitt trigger can be used to prevent false triggering of a comparator, caused by a poor input signal. The input signal is 50Hz, but has 1kHz of ripple on it. The ripple causes the comparator to falsely  trigger several times on the rise and fall. Closing the switch causes the op amp to work as a Schmitt trigger, introducing some hysteresis, thus giving a clean output.

published 7 years ago

roops1967

6 years ago

Great example!

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