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THINGS YOU SHOULD KNOW
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
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
NODEVOLTAGE EXAMPLES
213
NODEVOLTAGE SPECIAL CASES
7
SUPERNODE
1213
MESHCURRENT EXAMPLES
1522
MESHCURRENT SPECIAL CASES
17
SUPERMESH
2122
SOURCE TRANSFORMATIONS
2327
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 Fall '09
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