Fundamentals of Electric Circuits
6th Edition
ISBN: 9780078028229
Author: Charles K Alexander, Matthew Sadiku
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 5, Problem 77P
Solve Prob. 5.48 using PSpice or MultiSim and op amp LM324.
The circuit in Fig. 5.80 is a differential amplifier driven by a bridge. Find vo.
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Students have asked these similar questions
Q4.
a) A purely derivative controller (i.e. with a zero at the origin only) is defined
by an improper transfer function. Considering its asymptotic behaviour,
explain why a purely derivative controller is difficult to implement in
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c)
The transfer function of a lag compensator is given by
2
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S
By using the asymptotic approximation technique:
(i) Obtain the standard form and corner frequency for each individual
component of KPID(S).
(ii) Clearly describe the asymptotic behaviour of each individual
component of KPID(S).
Module Code: EN2058
Q1. a) List the advantages and disadvantages of a closed loop system compared to
an open loop system.
b)
c)
What is the procedure for designing a control system for a bread toaster?
An RC circuit is given in Figure Q1. vi(t) and v(t) are the input and output
voltages.
(i) Derive the transfer function of the circuit.
(ii) With a unit step change vi(t) applied to the circuit, derive and sketch the
time response of the circuit.
R1 R2
v₁(t)
R3 C1
vo(t)
R₁ =R2 = 10 k
R3 = 100 kn C₁ = 100 μF
Figure Q1. RC circuit.
(iii) Assuming zero initial conditions, obtain the impulse and ramp responses
of the circuit from the step response derived in (ii). Sketching is not
needed.
Q3.
a)
The frequency response method enables the study of the steady-state
response of a system G(s). What type of inputs are used for frequency
response? If the system is linear and stable, how does the output differ
from the input? Compare the main characteristics of two types frequency
response plots.
b) Consider the control system shown in Figure Q3.
Controller
E(s)
R(s)
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Plant
G(s)
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= s(s - 1)(s + 10)
Figure Q3. Closed-loop system.
(i) Considering definitions in the study of bounded-input bounded-output
stability, is G(s) stable? Classify the poles and zeros of G(s).
(ii) G(s) defined in Figure Q3 is a system completely characterised by
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(iii) Obtain the closed-loop transfer function P(s) = Y(s)/R(s) of the
system.
(iv) Based on your result for the previous question [Question 3b)-(iii)], use
the Routh-Hurwitz stability criterion to determine suitable values of
gain K…
Chapter 5 Solutions
Fundamentals of Electric Circuits
Ch. 5.2 - If the same 741 op amp in Example 5.1 is used in...Ch. 5.3 - Repeat Example 5.1 using the ideal op amp model....Ch. 5.4 - Practice Problem 5.3 Figure 5.13 For Practice...Ch. 5.4 - Two kinds of current-to-voltage converters (also...Ch. 5.5 - Calculate vo in the circuit of Fig. 5.20. Answer:...Ch. 5.6 - Practice Problem 5.6 Find vo and io in the op amp...Ch. 5.7 - Design a difference amplifier with gain 7.5....Ch. 5.7 - Obtain io in the instrumentation amplifier circuit...Ch. 5.8 - Practice Problem 5.9 Figure 5.30 For Practice...Ch. 5.8 - If v1 = 5 V and v2 = 5 V, find vo in the op amp...
Ch. 5.9 - Rework Practice Prob. 5.1 using PSpice. If the...Ch. 5.10 - A three-bit DAC is shown in Fig. 5.37. (a)...Ch. 5.10 - Determine the value of the external gain-setting...Ch. 5 - The two input terminals of an op amp are labeled...Ch. 5 - For an ideal op amp, which of the following...Ch. 5 - For the circuit in Fig. 5.40, voltage vo is: (a)6...Ch. 5 - For the circuit in Fig. 5.40, current ix is:...Ch. 5 - If vs = 0 in the circuit of Fig. 5.41, current io...Ch. 5 - If vs = 8 mV in the circuit of Fig. 5.41, the...Ch. 5 - Refer to Fig. 5.41. If vs = 8 mV, voltage va is:...Ch. 5 - The power absorbed by the 4-k resistor in Fig....Ch. 5 - Which of these amplifiers is used in a...Ch. 5 - Difference amplifiers are used in (please check...Ch. 5 - The equivalent model of a certain op amp is shown...Ch. 5 - The open-loop gain of an op amp is 50,000....Ch. 5 - Determine the voltage input to the inverting...Ch. 5 - The output voltage of an op amp is 4 V when the...Ch. 5 - For the op amp circuit of Fig. 5.44, the op amp...Ch. 5 - Using the same parameters for the 741 op amp in...Ch. 5 - 5.7 The op amp in Fig. 5.46 has Ri = 100 k, Ro =...Ch. 5 - Obtain vo for each of the op amp circuits in Fig....Ch. 5 - Determine vo for each of the op amp circuits in...Ch. 5 - Prob. 10PCh. 5 - Using Fig. 5.50, design a problem to help other...Ch. 5 - Calculate the voltage ratio vo/vs for the op amp...Ch. 5 - Find vo and io in the circuit of Fig. 5.52. Figure...Ch. 5 - Determine the output voltage vo in the circuit of...Ch. 5 - (a)Determine the ratio vo/is in the op amp circuit...Ch. 5 - Using Fig. 5.55, design a problem to help students...Ch. 5 - Prob. 17PCh. 5 - For the circuit shown in Figure 5.57, solve for...Ch. 5 - Determine io in the circuit of Fig. 5.58. Figure...Ch. 5 - In the circuit of Fig. 5.59, calculate vo of vs =...Ch. 5 - Calculate vo in the op amp circuit of Fig. 5.60....Ch. 5 - Design an inverting amplifier with a gain of 15.Ch. 5 - For the op amp circuit in Fig. 5.61, find the...Ch. 5 - In the circuit shown in Fig. 5.62, find k in the...Ch. 5 - Calculate vo in the op amp circuit of Fig. 5.63....Ch. 5 - Using Fig. 5.64, design a problem to help other...Ch. 5 - Find vo in the op amp circuit of Fig. 5.65. Figure...Ch. 5 - Prob. 28PCh. 5 - Determine the voltage gain vo/vi of the op amp...Ch. 5 - In the circuit shown in Fig. 5.68, find ix and the...Ch. 5 - For the circuit in Fig. 5.69, find ix. Figure 5.69...Ch. 5 - Calculate ix and vo in the circuit of Fig. 5.70....Ch. 5 - Refer to the op amp circuit in Fig. 5.71....Ch. 5 - Given the op amp circuit shown in Fig. 5.72,...Ch. 5 - Design a noninverting amplifier with a gain of...Ch. 5 - For the circuit shown in Fig. 5.73, find the...Ch. 5 - Determine the output of the summing amplifier in...Ch. 5 - Using Fig. 5.75, design a problem to help other...Ch. 5 - For the op amp circuit in Fig. 5.76, determine the...Ch. 5 - Referring to the circuit shown in Fig. 5.77,...Ch. 5 - An averaging amplifier is a summer that provides...Ch. 5 - The feedback resistor of a three-input averaging...Ch. 5 - The feedback resistor of a five-input averaging...Ch. 5 - Show that the output voltage vo of the circuit in...Ch. 5 - Design an op amp circuit to perform the following...Ch. 5 - Using only two op amps, design a circuit to solve...Ch. 5 - The circuit in Fig. 5.79 is for a difference...Ch. 5 - The circuit in Fig. 5.80 is a differential...Ch. 5 - Design a difference amplifier to have a gain of 4...Ch. 5 - Design a circuit to amplify the difference between...Ch. 5 - Using two op amps, design a subtractor.Ch. 5 - Design an op amp circuit such that vo = 4v1 + 6v2 ...Ch. 5 - The ordinary difference amplifier for fixed-gain...Ch. 5 - Determine the voltage transfer ratio vovs in the...Ch. 5 - In a certain electronic device, a three-stage...Ch. 5 - Using Fig. 5.83, design a problem to help other...Ch. 5 - Find vo in the op amp circuit of Fig. 5.84.Ch. 5 - Calculate io in the op amp circuit of Fig. 5.85....Ch. 5 - In the op amp circuit of Fig. 5.86, determine the...Ch. 5 - Calculate vo/vi in the op amp circuit of Fig....Ch. 5 - Determine vo in the circuit of Fig. 5.88. Figure...Ch. 5 - Obtain the closed-loop voltage gain vo/vi of the...Ch. 5 - Determine the gain vovi of the circuit in Fig....Ch. 5 - For the op amp circuit shown in Fig. 5.91, find...Ch. 5 - Find vo in the op amp circuit of Fig. 5.92.Ch. 5 - For the circuit in Fig. 5.93, find vo.Ch. 5 - Obtain the output vo in the circuit of Fig. 5.94....Ch. 5 - Find vo in the circuit of Fig. 5.95, assuming that...Ch. 5 - Find vo in the circuit of Fig. 5.95, assuming that...Ch. 5 - Determine vo in the op amp circuit of Fig. 5.96.Ch. 5 - Determine vo in the op amp circuit of Fig. 5.97.Ch. 5 - Find the load voltage vL in the circuit of Fig....Ch. 5 - Determine the load voltage vL in the circuit of...Ch. 5 - Find io in the op amp circuit of Fig. 5.100....Ch. 5 - Rework Example 5.11 using the nonideal op amp...Ch. 5 - Solve Prob. 5.19 using PSpice or MultiSim and op...Ch. 5 - Solve Prob. 5.48 using PSpice or MultiSim and op...Ch. 5 - Use PSpice or MultiSim to obtain vo in the circuit...Ch. 5 - Determine vo in the op amp circuit of Fig. 5.102,...Ch. 5 - Use PSpice or MultiSim to solve Prob. 5.70....Ch. 5 - Use PSpice or MultiSim to verify the results in...Ch. 5 - Prob. 82PCh. 5 - Design a six-bit digital-to-analog converter. (a)...Ch. 5 - A four-bit R-2R ladder DAC is presented in Fig....Ch. 5 - In the op amp circuit of Fig. 5.104, find the...Ch. 5 - Design a voltage controlled ideal current source...Ch. 5 - Figure 5.105 displays a two-op-amp instrumentation...Ch. 5 - Figure 5.106 shows an instrumentation amplifier...Ch. 5 - Design a circuit that provides a relationship...Ch. 5 - The op amp circuit in Fig. 5.107 is a current...Ch. 5 - A noninverting current amplifier is portrayed in...Ch. 5 - Refer to the bridge amplifier shown in Fig. 5.109....Ch. 5 - A voltage-to-current converter is shown in Fig....
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