THINGS YOU SHOULD KNOW
ABOUT NODE VOLTAGE (Lectures 8 & 9)
Assign voltages to each node and apply KCL at nodes where voltage is
unknown.
The problems are voltage sources.
There are three ways to deal with them:
1.
Ground one end of a voltage source.
Doesn’t work with multiple
sources unless they are connected to each other.
2.
Transform a voltage source (with a series resistance) to a current
source.
3.
Define a supernode which encloses the voltage source and write a
second equation which is simply the voltage difference between the
nodes.
ABOUT MESH CURRENT (Lectures 10
& 12)
Write mesh currents and apply KVL around each loop.
The problems are current sources.
There are three ways to deal with them:
1.
A current in an external loop is no problem. It becomes the mesh
current.
2.
Transform a current source (with a parallel resistance) to a voltage
source.
3.
Define a supermesh of two meshes which enclose the current source
and write a second equation which is simply the current difference
between the two meshes.
PAGE
NODE-VOLTAGE EXAMPLES
2-13
NODE-VOLTAGE SPECIAL CASES
7
SUPERNODE
12-13
MESH-CURRENT EXAMPLES
15-22
MESH-CURRENT SPECIAL CASES
17
SUPERMESH
21-22
SOURCE TRANSFORMATIONS
23-27
ENGR 210 REVIEW
Node-Voltage & Mesh-Current
Page 1

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