Brief comparator circuit using single supply op amp and voltage dividers – LM358

Table of Contents

Operational amplifiers (op amps) have 2 inputs that determine the output voltage.

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LM358 pin layout diagram by electronzap electronzapdotcom
LM358 pin layout diagram by electronzap electronzapdotcom
  • Noninverting input (+) voltage higher than inverting input (-) voltage = high (close to Vcc) output.
  • Noninverting input (+) voltage lower than inverting input (-) = Low (very close to ground for single supply op amp) output


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Diagram

Simple single supply op amp comparator using voltage dividers schematic diagram by electronzap electronzapdotcom
Simple single supply op amp comparator using voltage dividers schematic diagram by electronzap electronzapdotcom

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Video

Quick single supply op amp non inverting comparator circuit using LM358 operational amplifier

Next topic: Brief look at discovered problems with using LM358 op amp as a single supply comparator



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