MICROELECT. CIRCUIT ANALYSIS&DESIGN (LL)
4th Edition
ISBN: 9781266368622
Author: NEAMEN
Publisher: MCG
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Textbook Question
Chapter 9, Problem 9RQ
Describe the voltage follower. What are the advantages of using this circuit.
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Input voltage of a boost converter 80 V, output voltage 140 V and switchingits frequency is 20 kHz. The converter efficiency is known to be 95%.a) Continuous conduction (current) in operation when the load resistance changes between 14 - 20ohmThe lowest inductance (L) value and output that should be used to maintain the operation.the peak-to-peak value of the voltage ripple should be used to be 2% of the output voltage.Calculate the capacitor's capacity (C).
Q10. Determine maximum and minimum value of Zener current if value of series resistance is 1 K,
load resistance is 2KN and input varies from 10V to 30V. Zener voltage is 5 V.
Q11. What is LED?
Q12. Which materials are used in manufacturing of LEDS?
Q3. Design a DC/DC buck converter (as shown in Figure Q3) for an input voltage of
12V and an output of 5V at 20A. Assume a switching frequency of 10kHz.
Constrain the inductor ripple current to be 10% of the input current and limit the
output voltage ripple to 50mVp-p.
a) Explain the working mechanism of the converter by sketching equivalent
circuit diagrams when the switch Q is ON and OFF,
Calculate the duty cycle of the switch.
Find the ripple of the inductor current.
Calculate the required inductance and capacitance.
Sketch the waveform of the output voltage.
Is the converter works at continuous conduction mode CCM? If so, give
proof of that
b)
c)
d)
e)
f)
g) If the load current varies between 0 and 2A, what is the value of the duty
cycle range and at what operating condition?
DA
L
C²
Figure Q3 DC/DC buck converter.
R
Chapter 9 Solutions
MICROELECT. CIRCUIT ANALYSIS&DESIGN (LL)
Ch. 9 - Design an ideal inverting op-amp circuit such that...Ch. 9 - Design an ideal inverting op-amp circuit with a...Ch. 9 - (a) An inverting op-amp circuit is to be designed...Ch. 9 - (a) Design an ideal inverting op-amp circuit such...Ch. 9 - Prob. 9.2TYUCh. 9 - Consider an inverting op-amp circuit as shown in...Ch. 9 - (a) Design an inverting summing amplifier that...Ch. 9 - Consider an ideal summing amplifier as shown in...Ch. 9 - Design the summing amplifier in Figure 9.14 to...Ch. 9 - (a) Design a noninverting amplifier such that the...
Ch. 9 - The noninverting op-amp in Figure 9.15 has a...Ch. 9 - Use superposition to determine the output voltage...Ch. 9 - Consider the voltage-to-current converter shown in...Ch. 9 - Consider the difference amplifier in Figure...Ch. 9 - In the difference amplifier shown in Figure...Ch. 9 - For the instrumentation amplifier in Figure 9.26,...Ch. 9 - An integrator with input and output voltages that...Ch. 9 - A current source has an output impedance of...Ch. 9 - Design the voltage-to-current converter shown in...Ch. 9 - All parameters associated with the instrumentation...Ch. 9 - Design the instrumentation amplifier in Figure...Ch. 9 - An integrator is driven by the series of pulses...Ch. 9 - Consider the summing op-amp in Figure 9.40. Let...Ch. 9 - Consider the bridge circuit in Figure 9.46. The...Ch. 9 - The resistance R in the bridge circuit in Figure...Ch. 9 - Describe the ideal op-amp model and describe the...Ch. 9 - Prob. 2RQCh. 9 - Describe the operation and characteristics of the...Ch. 9 - What is the concept of virtual ground?Ch. 9 - What is the significance of a zero output...Ch. 9 - When a finite op-amp gain is taken into account,...Ch. 9 - Prob. 7RQCh. 9 - Describe the operation and characteristics of the...Ch. 9 - Describe the voltage follower. What are the...Ch. 9 - What is the input resistance of an ideal...Ch. 9 - Prob. 11RQCh. 9 - Describe the operation and characteristics of an...Ch. 9 - Describe the operation and characteristics of an...Ch. 9 - Describe the operation and characteristics of an...Ch. 9 - Assume an op-amp is ideal, except for having a...Ch. 9 - The op-amp in the circuit shown in Figure P9.2 is...Ch. 9 - An op-amp is in an open-loop configuration as...Ch. 9 - Consider the equivalent circuit of the op-amp...Ch. 9 - Consider the ideal inverting op-amp circuit shown...Ch. 9 - Assume the op-amps in Figure P9.6 are ideal. Find...Ch. 9 - Consider an ideal inverting op-amp with R2=100k...Ch. 9 - (a) Design an inverting op-amp circuit with a...Ch. 9 - Consider an ideal op-amp used in an inverting...Ch. 9 - Consider the inverting amplifier shown in Figure...Ch. 9 - (a) Design an inverting op-amp circuit with a...Ch. 9 - (a) Design an inverting op-amp circuit such that...Ch. 9 - (a) In an inverting op-amp circuit, the nominal...Ch. 9 - (a) The input to the circuit shown in Figure P9.14...Ch. 9 - Design an inverting amplifier to provide a nominal...Ch. 9 - The parameters of the two inverting op-amp...Ch. 9 - Design the cascade inverting op-amp circuit in...Ch. 9 - Design an amplifier system with three inverting...Ch. 9 - Consider the circuit shown in Figure P9.19. (a)...Ch. 9 - The inverting op-amp shown in Figure 9.9 has...Ch. 9 - (a)An op-amp with an open-loop gain of Aod=7103 is...Ch. 9 - (a) For the ideal inverting op-amp circuit with...Ch. 9 - An ideal inverting op-amp circuit is to be...Ch. 9 - For the op-amp circuit shown in Figure P9.25,...Ch. 9 - The inverting op-amp circuit in Figure 9.9 has...Ch. 9 - (a) Consider the op-amp circuit in Figure P9.27....Ch. 9 - The circuit in Figure P9.28 is similar to the...Ch. 9 - Consider the ideal inverting summing amplifier in...Ch. 9 - (a) Design an ideal inverting summing amplifier to...Ch. 9 - Design an ideal inverting summing amplifier to...Ch. 9 - Consider the summing amplifier in Figure 9.14 with...Ch. 9 - The parameters for the summing amplifier in Figure...Ch. 9 - (a) Design an ideal summing op-amp circuit to...Ch. 9 - An ideal three-input inverting summing amplifier...Ch. 9 - A summing amplifier can be used as a...Ch. 9 - Consider the circuit in Figure P9.38. (a) Derive...Ch. 9 - Consider the summing amplifier in Figure 9.14(a)....Ch. 9 - Consider the ideal noninverting op-amp circuit in...Ch. 9 - (a) Design an ideal noninverting op-amp circuit...Ch. 9 - Consider the noninverting amplifier in Figure...Ch. 9 - For the circuit in Figure P9.43, the input voltage...Ch. 9 - Determine vO as a function of vI1 and vI2 for the...Ch. 9 - Consider the ideal noninverting op-amp circuit in...Ch. 9 - (a) Derive the expression for the closed-loop...Ch. 9 - The circuit shown in Figure P9.47 can be used as a...Ch. 9 - (a) Determine the closed-loop voltage gain...Ch. 9 - For the amplifier in Figure P9.49, determine (a)...Ch. 9 - Consider the voltage-follower circuit in Figure...Ch. 9 - (a) Consider the ideal op-amp circuit shown in...Ch. 9 - (a) Assume the op-amp in the circuit in Figure...Ch. 9 - Prob. 9.53PCh. 9 - A current-to-voltage converter is shown in Figure...Ch. 9 - Figure P9.55 shows a phototransistor that converts...Ch. 9 - The circuit in Figure P9.56 is an analog voltmeter...Ch. 9 - Consider the voltage-to-current converter in...Ch. 9 - The circuit in Figure P9.58 is used to drive an...Ch. 9 - Figure P9.59 is used to calculate the resistance...Ch. 9 - Consider the op-amp difference amplifier in Figure...Ch. 9 - Consider the differential amplifier shown in...Ch. 9 - Consider the differential amplifier shown in...Ch. 9 - Let R=10k in the differential amplifier in Figure...Ch. 9 - Consider the circuit shown in Figure P9.64. (a)...Ch. 9 - The circuit in Figure P9.65 is a representation of...Ch. 9 - Consider the adjustable gain difference amplifier...Ch. 9 - Assume the instrumentation amplifier in Figure...Ch. 9 - Consider the circuit in Figure P9.68. Assume ideal...Ch. 9 - Consider the circuit in Figure P969. Assume ideal...Ch. 9 - The instrumentation amplifier in Figure 9.26 has...Ch. 9 - Design the instrumentation amplifier in Figure...Ch. 9 - All parameters associated with the instrumentation...Ch. 9 - The parameters in the integrator circuit shown in...Ch. 9 - Consider the ideal op-amp integrator. Assume the...Ch. 9 - The circuit in Figure P9.75 is a first-order...Ch. 9 - (a) Using the results of Problem 9.75, design the...Ch. 9 - The circuit shown in Figure P9.77 is a first-order...Ch. 9 - (a) Using the results of Problem 9.77, design the...Ch. 9 - Prob. 9.79PCh. 9 - Consider the circuit in Figure 9.35. The diode...Ch. 9 - In the circuit in Figure P9.81, assume that Q1 and...Ch. 9 - Consider the circuit in Figure 9.36. The diode...Ch. 9 - Design an op-amp summer to produce the output...Ch. 9 - Design an op-amp summer to produce an output...Ch. 9 - Design a voltage reference source as shown in...Ch. 9 - Consider the voltage reference circuit in Figure...Ch. 9 - Consider the bridge circuit in Figure P9.87. The...Ch. 9 - Consider the bridge circuit in Figure 9.46. The...
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