Microelectronics: Circuit Analysis and Design
4th Edition
ISBN: 9780073380643
Author: Donald A. Neamen
Publisher: McGraw-Hill Companies, The
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Chapter 5, Problem 10RQ
To determine
To explain: The steps used to analyze the DC response in BJT circuit.
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Q2. Figure Q2 shows a block diagram with an input of C(s) and an output R(s).
a)
C(s)
K₁
R(s)
K2
1 + 5s
1+2s
Figure Q2. Block diagram of control system.
Simply the block diagram to get the transfer function of the system C(s)/R(s).
b)
What is the order of the system?
c)
What is the gain of the system?
d) Determine the values of K₁ and K₂ to obtain a natural frequency w of
0.5 rad/s and damping ratio of 0.4.
e) What is the rise time and overshoot of the system with a unit step input?
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
practice. Relate your explanation to the potential limitations on system
performance.
b) Discuss the potential issues faced by a control system with a large cut-off
frequency. Relate your discussion to the implications on system
performance.
c)
The transfer function of a lag compensator is given by
2
KPID(S) = 2.2++0.2s
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.
Chapter 5 Solutions
Microelectronics: Circuit Analysis and Design
Ch. 5 - An npn transistor is biased in the forwardactive...Ch. 5 - (a) The common-emitter current gains of two...Ch. 5 - An npn transistor is biased in the forwardactive...Ch. 5 - The emitter current in a pnp transistor biased in...Ch. 5 - The output resistance of a bipolar transistor is...Ch. 5 - Assume that IC=1mA at VCE=1V , and that VBE is...Ch. 5 - The openemitter breakdown voltage is BVCBO=200V ,...Ch. 5 - A particular transistor circuit requires a minimum...Ch. 5 - The circuit elements in Figure 5.20(a) are changed...Ch. 5 - The circuit elements in Figure 5.22(a) are V+=3.3V...
Ch. 5 - (a) Verify the results of Example 5.3 with a...Ch. 5 - Consider the pnp circuit in Figure 5.22(a). Assume...Ch. 5 - In the following exercise problems, assume...Ch. 5 - In the following exercise problems, assume...Ch. 5 - The circuit elements in Figure 5.27(a) are changed...Ch. 5 - Using a PSpice simulation, plot the voltage...Ch. 5 - The parameters of the circuit shown in Figure...Ch. 5 - Design the commonbase circuit shown in Figure 5.33...Ch. 5 - The bias voltages in the circuit shown in Figure...Ch. 5 - The bias voltages in the circuit shown in Figure...Ch. 5 - The circuit elements in Figure 5.36(a) are V+=5V ,...Ch. 5 - For the transistor shown in the circuit of Figure...Ch. 5 - For the circuit shown in Figure 5.41, determine...Ch. 5 - Assume =120 for the transistor in Figure 5.42....Ch. 5 - For the transistor in Figure 5.43, assume =90 ....Ch. 5 - (a) Redesign the LED circuit in Figure 5.45(a)...Ch. 5 - The transistor parameters in the circuit in Figure...Ch. 5 - Redesign the inverter amplifier circuit shown in...Ch. 5 - For the circuit shown in Figure 5.44, assume...Ch. 5 - Consider the circuit shown in Figure 5.51(b)....Ch. 5 - [Note: In the following exercises, assume the BE...Ch. 5 - [Note: In the following exercises, assume the B—E...Ch. 5 - Consider the circuit in Figure 5.54(a), let...Ch. 5 - Prob. 5.16EPCh. 5 - The parameters of the circuit shown in Figure...Ch. 5 - Consider the circuit in Figure 5.54(a). The...Ch. 5 - Consider the circuit shown in Figure 5.58. The...Ch. 5 - In the circuit shown in Figure 5.60, the...Ch. 5 - The parameters of the circuit shown in Figure...Ch. 5 - For Figure 5.59, the circuit parameters are...Ch. 5 - In the circuit shown in Figure 5.61, determine new...Ch. 5 - For the circuit shown in Figure 5.63, the circuit...Ch. 5 - (a) Verily the cascode circuit design in Example...Ch. 5 - Prob. 1RQCh. 5 - Prob. 2RQCh. 5 - Prob. 3RQCh. 5 - Define commonbase current gain and commonemitter...Ch. 5 - Discuss the difference between the ac and dc...Ch. 5 - State the relationships between collector,...Ch. 5 - Define Early voltage and collector output...Ch. 5 - Describe a simple commonemitter circuit with an...Ch. 5 - Prob. 9RQCh. 5 - Prob. 10RQCh. 5 - Prob. 11RQCh. 5 - Describe a bipolar transistor NOR logic circuit.Ch. 5 - Describe how a transistor can be used to amplify a...Ch. 5 - Discuss the advantages of using resistor voltage...Ch. 5 - Prob. 15RQCh. 5 - Prob. 16RQCh. 5 - (a) In a bipolar transistor biased in the...Ch. 5 - (a) A bipolar transistor is biased in the...Ch. 5 - (a) The range of ( for a particular type of...Ch. 5 - (a) A bipolar transistor is biased in the...Ch. 5 - Prob. 5.5PCh. 5 - An npn transistor with =80 is connected in a...Ch. 5 - Prob. 5.7PCh. 5 - A pnp transistor with =60 is connected in a...Ch. 5 - (a) The pnp transistor shown in Figure P5.8 has a...Ch. 5 - An npn transistor has a reverse-saturation current...Ch. 5 - Two pnp transistors, fabricated with the same...Ch. 5 - The collector currents in two transistors, A and...Ch. 5 - Prob. 5.13PCh. 5 - Prob. 5.14PCh. 5 - In a particular circuit application, the minimum...Ch. 5 - A particular transistor circuit design requires a...Ch. 5 - For all the transistors in Figure P5.17, =75 . The...Ch. 5 - The emitter resistor values in the circuits show...Ch. 5 - Consider the two circuits in Figure P5.19. The...Ch. 5 - The current gain for each transistor in the...Ch. 5 - Consider the circuits in Figure P5.21. For each...Ch. 5 - (a) The circuit and transistor parameters for the...Ch. 5 - In the circuits shown in Figure P5.23, the values...Ch. 5 - (a) For the circuit in Figure P5.24, determine VB...Ch. 5 - (a) The bias voltages in the circuit shown in...Ch. 5 - The transistor shown in Figure P5.26 has =120 ....Ch. 5 - The transistor in the circuit shown in Figure...Ch. 5 - In the circuit in Figure P5.27, the constant...Ch. 5 - For the circuit shown in Figure P5.29, if =200 for...Ch. 5 - The circuit shown in Figure P5.30 is to be...Ch. 5 - (a) The bias voltage in the circuit in Figure P5.3...Ch. 5 - The current gain of the transistor in the circuit...Ch. 5 - (a) The current gain of the transistor in Figure...Ch. 5 - (a) The transistor shown in Figure P5.34 has =100...Ch. 5 - Assume =120 for the transistor in the circuit...Ch. 5 - For the circuit shown in Figure P5.27, calculate...Ch. 5 - Consider the commonbase circuit shown in Figure...Ch. 5 - (a) For the transistor in Figure P5.38, =80 ....Ch. 5 - Let =25 for the transistor in the circuit shown in...Ch. 5 - (a) The circuit shown in Figure P5.40 is to be...Ch. 5 - The circuit shown in Figure P5.41 is sometimes...Ch. 5 - The transistor in Figure P5.42 has =120 . (a)...Ch. 5 - The commonemitter current gain of the transistor...Ch. 5 - For the circuit shown in Figure P5.44, plot the...Ch. 5 - The transistor in the circuit shown in Figure...Ch. 5 - Consider the circuit in Figure P5.46. For the...Ch. 5 - The current gain for the transistor in the circuit...Ch. 5 - Consider the amplifier circuit shown in Figure...Ch. 5 - For the transistor in the circuit shown in Figure...Ch. 5 - Reconsider Figure P5.49. The transistor current...Ch. 5 - The current gain of the transistor shown in the...Ch. 5 - For the circuit shown in Figure P5.52, let =125 ....Ch. 5 - Consider the circuit shown in Figure P5.53. (a)...Ch. 5 - (a) Redesign the circuit shown in Figure P5.49...Ch. 5 - Prob. 5.55PCh. 5 - Consider the circuit shown in Figure P5.56. (a)...Ch. 5 - (a) Determine the Q-point values for the circuit...Ch. 5 - (a) Determine the Q-point values for the circuit...Ch. 5 - (a) For the circuit shown in Figure P5.59, design...Ch. 5 - Design a bias-stable circuit in the form of Figure...Ch. 5 - Using the circuit in Figure P5.61, design a...Ch. 5 - For the circuit shown in Figure P5.61, the bias...Ch. 5 - (a) A bias-stable circuit with the configuration...Ch. 5 - (a) For the circuit shown in Figure P5.64, assume...Ch. 5 - The dc load line and Q-point of the circuit in...Ch. 5 - The range of ß for the transistor in the circuit...Ch. 5 - The nominal Q-point of the circuit in Figure P5.67...Ch. 5 - (a) For the circuit in Figure P5.67, the value of...Ch. 5 - For the circuit in Figure P5.69, let =100 and...Ch. 5 - Prob. 5.70PCh. 5 - Design the circuit in Figure P5.70 to be bias...Ch. 5 - Consider the circuit shown in Figure P5.72. (a)...Ch. 5 - For the circuit in Figure P5.73, let =100 . (a)...Ch. 5 - Prob. D5.74PCh. 5 - (a) Design a fourresistor bias network with the...Ch. 5 - (a) Design a four-resistor bias network with the...Ch. 5 - (a) A fourresistor bias network is to be designed...Ch. 5 - (a) Design a fourresistor bias network with the...Ch. 5 - For each transistor in the circuit in Figure...Ch. 5 - The parameters for each transistor in the circuit...Ch. 5 - The bias voltage in the circuit shown in Figure...Ch. 5 - Consider the circuit shown in Figure P5.82. The...Ch. 5 - (a) For the transistors in the circuit shown in...Ch. 5 - Using a computer simulation, plot VCE versus V1...Ch. 5 - Using a computer simulation, verify the results of...Ch. 5 - Using a computer simulation, verify the results of...Ch. 5 - Consider a commonemitter circuit with the...Ch. 5 - The emitterfollower circuit shown in Figure P5.89...Ch. 5 - The bias voltages for the circuit in Figure...Ch. 5 - The multitransistor circuit in Figure 5.61 is to...
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