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Instrumentation
Dr. Xiaofeng Wu
Instrumentation (AMME2700)
1
Kirchhoff’s Circuit Laws
 Kirchhoff’s current law (KCL)
i  0
 Kirchhoff’s voltage law (KVL)
v  0
Instrumentation (AMME2700)
Series Resistors and Voltage Divider
Re  R1  R2      Rn
Rn
Vn 
vs
R1  R2      Rn
Instrumentation (AMME2700)
Parallel Resistors and Current Divider
1
1
1
1
 

Re R1 R2 R3
Conductance:
1
G
R
Ge  G1  G2      Gn
Gn
in 
is
G1  G2      Gn
Instrumentation (AMME2700)
Analyzing Resistive Circuits using
Matlab
 Determine the values of resistor currents.
(example 3.7-1)
i1
i2
i3
 1  1  1  i1  0.5
10 0 20 i    3 

 2   
 0 1  1 i3   0 
Instrumentation (AMME2700)
Node Voltage Analysis
va  v1  v2
Instrumentation (AMME2700)
Example (Exercise 4.2-2)
 Determine the node voltages, va and
v b.
Instrumentation (AMME2700)
Mesh Analysis
Instrumentation (AMME2700)
Example 4.10 (Hughes Book)
Instrumentation (AMME2700)
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