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4.5 Introduction
to the
MeshCurrent
Method
As stated
in Section 4.1, t}]e meshcurrent method of circuit analysis
enables us to describe a circuit in terms of r"
(/,e
1) equations. Recall
tlat a mesh
is a loop with no otler loops inside it. The circuit in Fig.4.1(b)
is shown agai in Fig. 4.18, with cu ert arrows inside each loop to distin
guish it. Recall also that the meshcurert method is applicable only to
planar circuits. The circuit in Fig. 4.18 contahs seven essential branches
where the current is unknown and four essential nodes, Therefore, to solve
it via the meshcurent method, we must *.dte four
[7
(4
1)] mesh
A mesh cunent is the current that exists only il the penmeter of a
mesh. On a circuit diagram it appears as eitier a closed solid line or an
almostclosed solid line that follows tlte pedmeter of the apprcpriate
mesh. An arrowhead on the solid line indicates the reference direction for
the mesh current. Figuie 4.18 shows the four mesh ctments that describe
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This note was uploaded on 07/05/2010 for the course EE 100 taught by Professor Boser during the Spring '07 term at University of California, Berkeley.
 Spring '07
 Boser

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