Comparator projects rk education kit p this project has been designed to introduce the important concept of operational amplifier comparator circuits to students p br p a href https www rapidonline com pdf 70 6020 op amp comparator pdf b assembly notes are available here b a p br p this circuit is very important as it features heavily in ks4 curriculums it has been designed to have more than one possible outcome and therefore more than one application it allows f