04/18/23
Exercise 1Exercise 1Op amp has an open loop gain of 2x105,input resistance
of 2MΩ and output resistance of 50ohm. Find the
closed-loop gain (dB) and determine current i when
Vs=2V (Prepared by: NOR SYUHADA BINTI
ZAINUDIN_G.1).
Exercise 2Exercise 2Determine the output voltage of an op-amp for input voltages
of Vi1 = 250 μV , Vi2 = 240 μV. The amplifier has a differential
gain of Ad = 4000 and the value of CMRR is :
a) 250
b) 10M
(Prepared by: ZURINA ABDUL HALIM_G.2)
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Find the output voltage of the operational amplifier with the help of the diagram below .Given β is 200,ri=250Ω if op-amp is in the opposite polarity input.(Prepared by: insyirah bt muhamad hamdan_G.1)
Exercise 3Exercise 3
+VCC =+14V
RC =5kΩ
Vi1 =6VVo
-VEE=-14V
RE=6kΩ
Q1Q2
RC =5kΩ
VE
3
Find the output voltage in figure below,where V1=1V, V2=0.5V, V3=0.2V, R1=R2=R3=Rf=10kΩ (Prepared by: LAI YOONG YEE_G.4)
Exercise 4Exercise 4
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Exercise 6Exercise 6
i
C
d
od r
R
V
VA
2
(a)Determine the type of the circuit in figure 1.(b)Draw the AC equivalent circuit of the circuit in figure 1.(c)Prove that differential voltage gain, Ad is given by the expression below:
Where Vd = Vi1 – Vi2 and Vo = Vo1 = Vo2.
(d) Calculate the output voltage if given Vi1=5V,Vi2=4V, B=150 and ri=15kΩ, RC=5kΩ, RE=3kΩ.(Prepared by: Syamimi binti Mokhtar_G.3)
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Exercise 7Exercise 7
Following the circuit calculate the voltage output 1 ( Vo1) and voltage output 2 (Vo2).(Prepared by: WAN KHAIRULNAIM B WAN HARON_G.5)
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Exercise 8Exercise 8The output voltage of a certain op-amp appears as shown in figure below in response to a step input. Determine the slew rate (Prepared by: LY GOH_G.2).
0.75µs-8
Vout (V)
+8
t0
7
9.1. For a given value of open-loop differential gain, does a higher common-mode gain result in a higher or lower CMRR? Explain. (Prepared by: NOR SYUHADA BINTI ZAINUDIN_G.1).
Exercise 9Exercise 9
9.2. What was the characteristic for the inverting amplifier? (Prepared by: ZURINA ABDUL HALIM_G.2)
9.3. Give the modes of input signal: (Prepared by: insyirah bt muhamad hamdan_G.1)
9.4. Briefly explain about inverting amplifier (Prepared by: LAI YOONG YEE_G.4).
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9.5. If the input signal not match for the circuit in figure 1,does it function properly? Why? (Prepared by: Syamimi binti Mokhtar_G.3)
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Exercise 10Exercise 10
Theory:Theory:A typical op-amp is made up of three types of amplifier
circuits. Name the three types of the stage and draw the diagram.
Calculation:Calculation: Refer to Figure where V1 = 5V, R1 = 100 kΩ, Rf = 500 kΩ and AC = 0.001, calculate:
(a) output voltage, Vo(b) common mode rejection ratio, CMRR(c) output voltage if the connection is converted to non-inverting amplifier
(Prepared by: Hasrimie b Abdul Hamid_G.10)
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Exercise 11Exercise 11
Theory:Theory:Define: (a) Differential Input and (b) Common Input.
Calculation:Calculation:
If known that +Vcc = +15V Rc = 10kΩ, Vi1 = 2V, -VEE= -15V, RE = 8kΩ and Vi2 = 0V, find the output voltage Vo1.
(Prepared by: Mohamad Aizat_G.10)
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Exercise 12Exercise 12
Theory:Theory:State 3 differences between Ideal Op-Amp and
Practical Op-Amp?
Calculation:Calculation: Find the values of the input and output impedances in figure 1.Also,determine the closed-loop voltage gain. The op-amp has the following parameters: Aol = 50 000;Zin = 4 M Ohm, Zout = 50 Ohm.
(Prepared by: Siti Haslinda bt Zainall Abidin _G.8)
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Exercise 13Exercise 13
Theory:Theory:List the amplifier class in a typical op-amp?
Calculation:Calculation: Calculate the output voltage of a non-inverting amplifier as figure below, for values of V1 = 2 V, Rf = 500 kΩ and R1 = 100 kΩ.
(Prepared by: Bong Soon Wai_G.8)
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Exercise 14Exercise 14
Theory:Theory:Define common-mode rejection?
Calculation:Calculation: Given the op-amp configuration in figure 1, determine the value of required to produce a closed-loop of voltage gain of 12.
(Prepared by: Lee Kar Leong _G.8)
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Exercise 15Exercise 15
Theory:Theory:Briefly explain about the operation of differential mode?
Calculation:Calculation:
Refer to Figure, determine the approximate values for each of the following quantities: Iin, If, Vout and closed loop gain if given R1=2.2 KΩ ,Rf=22 KΩ, and Vin=1V
(Prepared by: Kalidhass A/L Vengdasalam_G.6)
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Exercise 16Exercise 16
Theory:Theory:Why DC power supply is used in operational amplifier circuits?
Calculation:Calculation:
+_
+
_
VoVs
10K
20K
7411
i
5102x
An ideal op amp is shown in Figure. Op amp has an open loop gain of 2 x 105, input resistance of 2 MΩ and output resistance of 50 Ω.(a) Draw the equivalent circuit of circuit in Figure 1(b) Find the closed-loop gain (dB)(c) Determine current i when Vs = 2 V
(Prepared by Sarveshvaran A/L Suppiah_G.6)
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Exercise 17Exercise 17
Theory:Theory:There a three operations can be done in a differential amplifier circuits : i) DC Bias ii) AC Operation
Calculation:Calculation:
Given: VCC = +9V, VEE = -9V, RC = 3.9 kΩ and RE = 3.3 kΩ. Calculate
the DC voltages.
(Prepared by Syamsuri B Hamzah_G.5)
Describe iii) Common Mode Operationabout AC Operation and Common Mode Operation and draw the figure of each amplifier circuit.
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Exercise 18Exercise 18
Theory:Theory:State the reason why the additional resistor (Rf) are used in a practical integrator.
Calculation:Calculation:
This Figure shows a Summing Amplifier with the following data:V1= 8v, R1= 650KΩV2= -4v, R2= 480KΩV3= 2v, R3= 700KΩ
Rf = 1.5MΩCalculate the output voltage (Vo) of the amplifier.
(Prepared by: MOHD AZRUL BIN AHMAD _G.5)
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The names listed below are the lucky studentslucky students
because having a chance to finish the prepared
questions:
1. Syamsul Arif_G.10 (Exc. 10)
2. Zulfahmi_G.10 (Exc. 11)
3. Majidah bt Mohd Zani Piyas_G.8 (Exc. 12)
4. Jason Wu Chee San_G.8 (Exc. 13)
5. Aaron Koay Terr Yeow_G.8 (Exc. 14)
6. Dasarathan A/L Rajan Theren_G.6 (Exc. 15)
7. Anis shafika bt Mohd Zaini_G.6 (Exc.16)
8. Loh Yang Tee_G.5 (Exc. 17)
9. Syamsuri B Hamzah_G.5 (Exc. 18)
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