Threshold After Loading - Electronic Circuits II Step by Step

A threshold decision follows the computed node voltage, so loading can change the ideal decision. Exact arithmetic here means exact results for the stated model inputs; measured inputs still carry uncertainty and significant-figure limits.

highlighted = computed this step

Before the load, the node is above threshold

The unloaded output is 8 volts, which is above the 7 volt threshold.

8\ \text{V} > 7\ \text{V}

After the load, the node is below threshold

The loaded output is 6 volts, which is below the same threshold. This is an ideal threshold comparison; noise margins, hysteresis, and propagation delay are deferred.

6\ \text{V} < 7\ \text{V}