Brief Schmitt trigger LM358 op amp comparator circuit

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Schmitt triggers help prevent a wavering signal voltage from causing a rapid repeated high/low triggering near a single voltage. It has 2 threshold voltages and a middle ground voltage called hysteresis that needs to be exceeded in order for the output to change.

Simple op amp schmitt trigger non inverting comparator with hysteresis circuit schematic diagram by electronzap electronzapdotcom
Simple op amp schmitt trigger non inverting comparator with hysteresis circuit schematic diagram by electronzap electronzapdotcom
Schmitt trigger hysteresis graph diagram by Electronzap Electronzapdotcom
Schmitt trigger hysteresis graph diagram by Electronzap Electronzapdotcom
  • When + input voltage is high enough above – input, then the output will be high.
  • If + input voltage is low enough below – input, then the output is low.
  • There is a middle ground voltage (hysteresis) where the output is either high or low based on what the output was last put into.

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Quick Schmitt trigger LM358 op amp non inverting comparator circuit by electronzap

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