Sensor to Comparator - Electronic Circuits III: Comparators and Interfaces Step by Step

A sensed divider node can drive an ideal comparator when every stage is checked. Exact arithmetic here means exact results for the stated model inputs; measured inputs still carry uncertainty and significant-figure limits.

highlighted = computed this step

The sensed divider output is exact

The sensed node is 8 volts.

V_{\text{sense}} = 8\ \text{V}

The comparator compares against the reference

The reference is 6 volts, so the comparator output rail is 12 volts.

8\ \text{V} > 6\ \text{V}