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