A1262432863GNqOB - PowerPoint PPT Presentation
1 / 18
Title:
A1262432863GNqOB
Description:
... the reference node: typically the one with the most branches. Step 2 ... Write down equations using KCL for every non-reference node in terms of node voltages ... – PowerPoint PPT presentation
Number of Views:34
Avg rating:3.0/5.0
Title: A1262432863GNqOB
1
SUMMARY ON NODAL AND MESH ANALYSIS
2
- Both techniques provide systematic steps in
solving electric circuit
- Nodal applicable to all circuits, Mesh only
applicable to planar circuit
- NOT ALL circuits require nodal or mesh analysis
to solve them.
- If nodal or mesh analysis is required, choose the
one which will give the fastest or simplest steps
3
Nodal versus Mesh Analysis
- To select the method that results in the smaller
number of equations. For example - Choose nodal analysis for circuit with fewer
nodes than meshes. - Choose mesh analysis for circuit with fewer
meshes than nodes. - Networks that contain many series connected
elements, voltage sources, or supermeshes are
more suitable for mesh analysis. - Networks with parallel-connected elements,
current sources, or supernodes are more suitable
for nodal analysis. - If node voltages are required, it may be
expedient to apply nodal analysis - If branch or mesh currents are required, it
may be better to use mesh analysis.
4
NODAL ANALYSIS
Step 1
Determine the reference node typically the one
with the most branches
Step 2
Assign the rest of the nodes with node voltages
(referred to the reference node)
Step 3
Write down equations using KCL for every
non-reference node in terms of node voltages
Step 4
Obtain the node voltages by solving the
simultaneous equations in step 3
5
NODAL ANALYSIS
va
vb
6
NODAL ANALYSIS
7
NODAL ANALYSIS
va
8
NODAL ANALYSIS
9
NODAL ANALYSIS
10
NODAL ANALYSIS
11
NODAL ANALYSIS
12
NODAL ANALYSIS
13
NODAL ANALYSIS
Constraint equation
14
MESH ANALYSIS
Step 1
Assign mesh currents to the meshes
Step 2
For every mesh, apply KVL Using Ohms law,
write down the equations in terms of mesh currents
Step 3
Solve mesh currents in equations obtained in step
2, simultaneously
15
MESH ANALYSIS
Mesh 1 -Vs R1(i1 i2) R2(i1 i3) 0
16
MESH ANALYSIS
Mesh 2 i2 Is
17
MESH ANALYSIS
Is
Mesh 2 i2 Is
18
MESH ANALYSIS
Constraint equation i1 i3 Is
Recommended
CrystalGraphics Presentations
