Medium

What is mesh analysis?

3 min readNov 10, 2021

Mesh is a loop that doesn’t consists of any other loop inside it. Mesh analysis technique, uses mesh currents as variables , instead of currents in the elements to analyze the circuit. Therefore, this method absolutely reduces the number of equations to be solved . Mesh analysis applies the Kirchhoff’s Voltage Law (KVL) to determine the unknown currents in a given circuit. Mesh analysis is also called as mesh-current method or loop analysis. After finding the mesh currents using KVL, voltages anywhere in a given circuit can be determined by using Ohms law.

Steps to Analyze Mesh Circuit

Step 1 — Identify all the meshes in the circuit.
Step 2 —Assign the current directions to each mesh in a given circuit and follow the same direction for each mesh.
Step 3 — Apply KVL to each mesh and simplify the KVL equations.
Step 4— Solve the simultaneous equations of various meshes to get the mesh currents
Step 5 — These equations are exactly equal to the number of meshes present in the network.

Aim

Using Pspice software finding current by Mesh Analysis.

Components Required

DC Voltage Source(VDC), Resistors(r), Ground Resistor(GND_EARTH), DC current source(IDC), Wire.

Circuit Diagram

Steps

1. Connect the circuit as shown in the circuit diagram.
2. Assign the values to voltage source and resistances.
3. Analysis -> Setup -> Bias Point Detail.
4. Save the file and Simulate.

Simulation Result

The simulation uses Kirchhoff’s Voltage Law to simplify the circuit during Mesh Analysis. Loops are chosen, and current equations are created. When we solve them, we get our current values.

Examples