NODAL ANALYSIS WITH CURRENT SOURCES

GOOD DAY! :)


First of all, we want to introduce to you this new topic in our blog.


WHAT IS A NODAL ANALYSIS?

A nodal analysis is a method of determining or identifying the voltage or the potential difference between the nodes in an electric circuit in terms of the branch currents. In this case, choosing a node voltage is easier than choosing other elements as current variables.


WHAT IS A NODE?

A node is a point where elements or branches are connected.


WHAT ARE THE STEPS IN DETERMINING NODE VOLTAGES?

STEP 1. Choose a node as the reference node. A reference node is a node with 0 potential.

STEP 2. Assign voltages V1, V2... Vn-1 to the remaining n-1 nodes. The voltages are referenced with respect to the reference node.

STEP 3. Apply KCL to each of the n-1 non-reference nodes. Use Ohm's law to express the branch currents in terms of node voltages.

STEP 4. Solve to determine the unknown node voltages. Use substitution method or Cramers rule.