SUPERPOSITION
PRINCIPLE
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sup Pri n
In a linear circuit any current andvoltage
due to the action of two or more generator
can
be obtained as the sum of the
corresponding currents and voltages due
to the action of a single generator at a
time
switch off of generators
voltage generator
current generator
ex
o
an
o
short circuit
o
open
circuit
example
R2
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un
t
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f 3
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1
to
es
R2
Mr
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Nj
0
mid
5
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RollRa
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oh
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1211123
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2311124
1311124 122
lit
21123
221123
Rg
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es
TH ÉVENIN'S
EQUIVALENT
CIRCUIT
A
A
Mr
RAB
series parallel
B
B
d
O
A
9M
A
Es
A
un
few
1 di
g
v
Na
Ne
Ei
v
anent
E
contrib of gens
the box
Nin
i
o
Y
t v
da
i
rout
contrib of the gem
outside the box
Yui's.de
A B terminals
AB
are
when
i
is
open
open circuit voltage
AB terminals
No
v't v
tri
Pia
Fi
is the voltage at
off
7II E
ie
voltage with open
Noot
is
the contribution
of the external generator
when all generators inside the box
A
Uh
Noot
Nov
1
v
ai
a
B
v74Egri
e
RTM
Req
in
A
be
I
N
No
NTH
B
P
N a
NTH
Regi
are
off
A
ME
my
ai k is
g
NTH RTHi
N
v
No
Nth
I Rtrin
Efta
example
MY
ma
A
3123
iz
es
B
it
NTH
a
Rs
B iz
B
iz
NTH
Rin t 123
oil
ETH
Mi at mid
RTH R211124
B
e
WTH
e
es
ÉÉÉfmf
4
ONTH
B
i
es
Nin
en es
R2 Ra
e
Rzi
e
en es
izz
Rat Ra
Norton's equivalent circuit
A
in
Rn
O B
Replace
error
9.6
in
percentage
9 I
RN
RTH
in
YI