SuperNode
In circuit theory, a supernode is a theoretical construct that can be used to solve a circuit. 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.
Each supernode contains two nodes, one a non-reference node and another node that may be a second non-reference node or the reference node. Supernodes containing the reference node have one node voltage variable. For nodal analysis, the supernode construct is only required between two non-reference nodes.
Nodal Analysis
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. Every junction where two or more branches meet is a node. One of the nodes in the network is taken as reference node. If there are n nodes in any network, the number of simultaneous equation to be solved will be (n-1).
Kirchhoff's voltage law (KVL)
Kirchhoff's voltage law (KVL) The sum of all the voltages around a loop is equal to zero. This law is also called Kirchhoff's second law, Kirchhoff's loop (or mesh) rule, and Kirchhoff's second rule. ... This law is based on the conservation of energy whereby voltage is defined as the energy per unit charge.
This video demonstrates the use of KCL.
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