Experiment 4 - The Inverting Comparator

You can also interchange the inputs V_in and V_Ref at the comparator. This also changes the signal at the output.

In the circuit shown you realize that the two inputs were interchanged...

Circuit diagram inverting comparator.

Circuit inverting comparator. (Enlarge)

This results in the following state table and signal profile...

Voltages LED State Vin < VRef ON HIGH Vin > VRef OFF LOW States of a inverting comparator.

Signal profile of an inverting comparator.

In the next step you look at an ideal comparator...