Brief inverting op amp comparator circuit – LM358

Table of Contents

While comparing 2 voltages, the op amp output will swing all the way to the opposite direction of the inverting input (-) voltage in relationship to the voltage set at the non inverting input (+).

Diagram

A higher input than reference voltage = Low output. A lower input voltage than reference voltage = a high output)

Simple inverting comparator using LM358 op amp circuit schematic diagram by electronzap electronzapdotcom
Simple inverting comparator using LM358 op amp circuit schematic diagram by electronzap electronzapdotcom
  • Lower (-) input V than reference voltage at (+) input = high output.
  • Higher (-) input V than reference voltage at (+) input = low output.

High output is a voltage as close to the positive supply as the op amp can provide.

Low output is as close to the negative supply voltage as the output can provide.

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LM358 pin layout diagram by electronzap electronzapdotcom
LM358 pin layout diagram by electronzap electronzapdotcom

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