This is done by viewing a voltage source on a wire as a point source voltage in relation to other point voltages located at various nodes in the circuit, relative to a ground node assigned a zero or negative charge.
A supernode exists when an ideal voltage source appears between any two nodes of an electric circuit.
For nodal analysis, the supernode construct is only required between two non-reference nodes.
[2] It is related to Kirchhoff's current law which states that the total or algebraic sum of currents meeting at a junction or node is zero.
If there are n nodes in any network, the number of simultaneous equation to be solved will be (n-1).This electronics-related article is a stub.