R = 15 kΩ R₁ = 1 k www In Fig. 1 Rb www In 20 ΚΩ 18 ΚΩ + + €33.3 ΚΩ 30 ΚΩ ww *, 547 ΚΩ 20 ΚΩ ww d De Fig. 4 Fig. 3 Q3:- The op amp in the noninverting summing amplifier of Fig. 3 is ideal, Specify the values of Rf, Rb, and Rc so that v0 = 6va + 3vb + 4vc. Q4: The op amp in the adder-subtracter circuit shown in fig. 4 is ideal. a) Find v0 when va = 1 V, vb = 2 V, vc = 3 V, and Vd = 4 V. b) If va, vb, and vd are held constant, what values of vc will not saturate the op amp? R₁ m ●+1 15 V -15 V R₂ = 3 k i 68 kn P Pho n Fig. 2 180 ΚΩ www 3 20 ΚΩ 20 V -20 V

Introductory Circuit Analysis (13th Edition)
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Author:Robert L. Boylestad
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solve question 3

Q1-
The op amp in the circuit in Fig. 1 is ideal. Calculate the following:
a) v₁, b) Vo, c) i2, d) io
Q2: The op amp in the circuit shown in Fig. 2 is ideal.
a) Calculate va when vg equals 4 V.
b) Specify the range of values of vg so that the opamp operates in a linear mode.
c) Assume that vg equals 2 V and that the 63 k resistor is replaced with a variable resistor.
What value of the variable resistor will cause the opamp to saturate?
63 ΚΩ
40 ΚΩ
ww
50 ΚΩ
30 ΚΩ
• 15 V C 520 ΚΩ
-15 V
"325 ΚΩ
"Σ27 ΚΩ
Fig. 1
Ba
Q3:-
Q4:-
2 ΚΩ
ww
150 mV
b
R = 15 kΩ
R₁ = 1 k
www
R₁
www
●15 V
Rb
www
fo
4,
-15 V
20 ΚΩ
ww
18 ΚΩ
+
€ 3.3.3 ΚΩ
30 ΚΩ
ww
"547 ΚΩ
20 ΚΩ
ww
l'h
{R₂ = 3 kn
Fig. 4
Fig. 3
The op amp in the noninverting summing amplifier of Fig. 3 is ideal, Specify the values of Rf,
Rb, and Rc so that v0 = 6va + 3vb + 4ve
The op amp in the adder-subtracter circuit shown in fig. 4 is ideal.
a) Find v0 when va = 1 V, vb = 2 V, vc = 3 V, and Vd = 4 V.
b) If va, vb, and vd are held constant, what values of vc will not saturate the op amp?
P
Vg
22,
12 ΚΩ
ww
68 ΚΩ
12 V
→
-12 V
Fig. 2
180 ΚΩ
www
5 20 ΚΩ
◆20 V
+1
-20 V
Transcribed Image Text:Q1- The op amp in the circuit in Fig. 1 is ideal. Calculate the following: a) v₁, b) Vo, c) i2, d) io Q2: The op amp in the circuit shown in Fig. 2 is ideal. a) Calculate va when vg equals 4 V. b) Specify the range of values of vg so that the opamp operates in a linear mode. c) Assume that vg equals 2 V and that the 63 k resistor is replaced with a variable resistor. What value of the variable resistor will cause the opamp to saturate? 63 ΚΩ 40 ΚΩ ww 50 ΚΩ 30 ΚΩ • 15 V C 520 ΚΩ -15 V "325 ΚΩ "Σ27 ΚΩ Fig. 1 Ba Q3:- Q4:- 2 ΚΩ ww 150 mV b R = 15 kΩ R₁ = 1 k www R₁ www ●15 V Rb www fo 4, -15 V 20 ΚΩ ww 18 ΚΩ + € 3.3.3 ΚΩ 30 ΚΩ ww "547 ΚΩ 20 ΚΩ ww l'h {R₂ = 3 kn Fig. 4 Fig. 3 The op amp in the noninverting summing amplifier of Fig. 3 is ideal, Specify the values of Rf, Rb, and Rc so that v0 = 6va + 3vb + 4ve The op amp in the adder-subtracter circuit shown in fig. 4 is ideal. a) Find v0 when va = 1 V, vb = 2 V, vc = 3 V, and Vd = 4 V. b) If va, vb, and vd are held constant, what values of vc will not saturate the op amp? P Vg 22, 12 ΚΩ ww 68 ΚΩ 12 V → -12 V Fig. 2 180 ΚΩ www 5 20 ΚΩ ◆20 V +1 -20 V
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