Loaded Front-End Nodes

Loaded Node Before Gain

amplify the node that exists

An ideal gain contract multiplies the loaded node, not the open source voltage. 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 gain stage receives the loaded node

The source is 6 volts, but the input node is only 3 volts after loading.

Vin=3 VV_{\text{in}} = 3\ \text{V}
Loaded node before gainThe gain input is the loaded node.6 V1 ohm1 ohmA3 A3 A+-3 V+-3 Voutputload

The ideal gain multiplies the loaded node

The declared gain of 2 acts on the loaded input, giving 6 volts.

Vout=2⋅3 V=6 VV_{\text{out}} = 2\cdot 3\ \text{V} = 6\ \text{V}
Loaded gainThe gain contract uses the loaded input.V3 VV6 V+-3 V+-6 Vgain