Exam 3 Problem 1 Solution
1240
S 20
EX:
a)
For the circuit shown above, find the numerical value of the output voltage, vTh.
b)
Find the numerical value of RTh for the entire circuit, (i.e., as seen from the
output on the right side), in terms of circuit values.
Sohni b 12Th
9
a
for
0h
op amp
Superposition
ease
1
I
Vg
i
0
oiEEFy
3 3V
Find Vp
No v drop for
Ri R2
Vp
is off
on
Vn
R3
w
3.3 V
3
Ry
Kr
f
open
o.tn
3.3 V
Vn Up
Use Node V
2
3
wth
Circ Sys Des Cards
Non Inv Amp
use
or
find
to
twist
04h11f
3.3W
EElVTh
t.es
VgRztR4R4
g
3k2g
Ry
3 3V
4h1
II
Case
us
OV
i
o
Thrown
Up or
P
i O
us
wire
off
OA
R2
R
on
16.5V
50
3.3
153k
t
NZ
0Th
G
E
w.vn
HEE
EEo
Il2kr6Vi
o
T
Hnz
n
ofqtou
O
is _EMA
124
3 Kr
1
Vp
OV
2
Vn
Vp
3
OV
Node V at un to
find
Uphz
90
m
nfth.at
Uth2
In
Th
V
o
EMA
3km
Iz MA
Thz
I
Thz
GU
Thi t
t
Vin z
4h
mA
Kkr
I6 5V
10 5 V
GV
OA