1
Circuit Analysis
Circuit Analysis
Trac D. Tran
ECE Department
The Johns Hopkins University
Baltimore, MD 21218
Outline
Outline
Fundamental circuit analysis
Voltage divider
Current divider
Equivalent resistances
Examples
Advanced circuit analysis
Thévenin equivalent circuits
Norton equivalent circuits
Superposition principle
Examples

This
** preview**
has intentionally

**sections.**

*blurred***to view the full version.**

*Sign up*
2
Voltage Divider
Voltage Divider
+
_
)
(
t
i
)
(
1
t
v
1
R
+
_
)
(
2
t
v
2
R
+
_
)
(
t
v
S
2
1
)
(
)
(
:
Law
s
Ohm'
R
R
t
v
t
i
S
t
t
v
R
R
R
t
v
R
t
i
t
v
S
s
),
(
)
(
)
(
)
(
:
Law
s
Ohm'
2
1
2
2
2
Only a fraction of the
voltage appears across each
resistor in a series circuit
Applications: voltage
adaptor, transducer…
Example: Position Transducer
Example: Position Transducer
)
(
t
i
1
R
+
_
2
v
2
R
+
_
S
v
A transducer is often used as an electrical sensor that
produces voltage (or current) proportional to a physical
quantity of interest, such as pressure, temperature, distance…
)
(
)
(
)
(
2
1
2
2
t
K
R
R
t
R
v
t
v
S
some constant