Microelectronics: Circuit Analysis and Design
4th Edition
ISBN: 9780073380643
Author: Donald A. Neamen
Publisher: McGraw-Hill Companies, The
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Question
Chapter 8, Problem 8.10P
(a)
To determine
The maximum permissible thermal resistance between the case and the ambient.
(b)
To determine
The junction temperature.
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. A half-wave rectifier is needed to supply 15-V dc to a load that draws an average current of 300 mA. The peak-to-peak ripple is required to be 0.2 V or less. What is the minimum value allowed for the smoothing capacitance?
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220V rmsh
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The Figure 2 shows an electronic circuit designed for supplying power to a load (R1). The
supply voltage 235V (RMS, AC) at frequency of 50HZ. The required DC voltage and power
for the load are 24V and 3.6 W respectively.
The Electrical Components of this AC to DC converter are:
A full-wave rectifier to convert AC voltage to DC voltage.
A regulator with transistor and Zener diode to ensure a constant voltage and power
for the load.
D1
Iide
91
Vaut
VLoad
D2 D3
Vde
VI
sine
R1
RL
Regulate
Reetifier
Figure 2. Complete Circuit
Assume that the diodes are real diodes (NOT ideal diodes). The following information is
available:
The collector to base resistor of the regulator R1 = 5.0 k
The transistor Q1 with B value of 24 is used for the regulator circuit.
Determine the following quantities for this electronic device and fill the table below:
Question
Answer
The voltage of Zener Diode (Vz)
The current in R1
The DC current into the regulator
| (Idc)
Base current of transistor (IB)
Collector…
Chapter 8 Solutions
Microelectronics: Circuit Analysis and Design
Ch. 8 - Prob. 8.1EPCh. 8 - Prob. 8.2EPCh. 8 - Prob. 8.3EPCh. 8 - Prob. 8.1TYUCh. 8 - Prob. 8.2TYUCh. 8 - Prob. 8.3TYUCh. 8 - Prob. 8.4EPCh. 8 - Prob. 8.5EPCh. 8 - Prob. 8.7EPCh. 8 - Prob. 8.4TYU
Ch. 8 - Prob. 8.5TYUCh. 8 - Prob. 8.6TYUCh. 8 - A transformercoupled emitterfollower amplifier is...Ch. 8 - Prob. 8.7TYUCh. 8 - Prob. 8.9EPCh. 8 - Prob. 8.11EPCh. 8 - Consider the classAB output stage shown in Figure...Ch. 8 - From Figure 8.36, show that the overall current...Ch. 8 - Prob. 1RQCh. 8 - Describe the safe operating area for a transistor.Ch. 8 - Why is an interdigitated structure typically used...Ch. 8 - Discuss the role of thermal resistance between...Ch. 8 - Define and describe the power derating curve for a...Ch. 8 - Define power conversion efficiency for an output...Ch. 8 - Prob. 7RQCh. 8 - Describe the operation of an ideal classB output...Ch. 8 - Discuss crossover distortion.Ch. 8 - What is meant by harmonic distortion?Ch. 8 - Describe the operation of a classAB output stage...Ch. 8 - Describe the operation of a transformercoupled...Ch. 8 - Prob. 13RQCh. 8 - Sketch a classAB complementary MOSFET pushpull...Ch. 8 - What are the advantages of a Darlington pair...Ch. 8 - Sketch a twotransistor configuration using npn and...Ch. 8 - Prob. 8.1PCh. 8 - Prob. 8.2PCh. 8 - Prob. 8.3PCh. 8 - Prob. 8.4PCh. 8 - Prob. 8.5PCh. 8 - Prob. D8.6PCh. 8 - A particular transistor is rated for a maximum...Ch. 8 - Prob. 8.8PCh. 8 - For a power MOSFET, devcase=1.5C/W , snkamb=2.8C/W...Ch. 8 - Prob. 8.10PCh. 8 - The quiescent collector current in a BiT is ICQ=3A...Ch. 8 - Prob. 8.12PCh. 8 - Prob. 8.13PCh. 8 - Prob. 8.14PCh. 8 - Prob. 8.15PCh. 8 - Prob. 8.16PCh. 8 - Consider the classA sourcefollower circuit shown...Ch. 8 - Prob. 8.18PCh. 8 - Prob. 8.19PCh. 8 - Prob. 8.20PCh. 8 - Prob. 8.21PCh. 8 - Consider an idealized classB output stage shown in...Ch. 8 - Consider an idealized classB output stage shown in...Ch. 8 - Prob. 8.24PCh. 8 - For the classB output stage shown in Figure P8.24,...Ch. 8 - Prob. 8.26PCh. 8 - Prob. 8.27PCh. 8 - Consider the classAB output stage in Figure P8.28....Ch. 8 - Prob. 8.29PCh. 8 - Prob. D8.30PCh. 8 - Prob. 8.31PCh. 8 - Prob. D8.32PCh. 8 - Consider the transformercoupled commonemitter...Ch. 8 - The parameters for the transformercoupled...Ch. 8 - A BJT emitter follower is coupled to a load with...Ch. 8 - Consider the transformercoupled emitter follower...Ch. 8 - A classA transformer-coupled emitter follower must...Ch. 8 - Repeat Problem 8.36 if the primary side of the...Ch. 8 - Consider the circuit in Figure 8.31. The circuit...Ch. 8 - Prob. D8.40PCh. 8 - The value of IBiass in the circuit shown in Figure...Ch. 8 - The transistors in the output stage in Figure 8.34...Ch. 8 - Consider the circuit in Figure 8.34. The supply...Ch. 8 - Prob. 8.44PCh. 8 - Prob. 8.45PCh. 8 - Consider the classAB MOSFET output stage shown in...Ch. 8 - Prob. 8.47PCh. 8 - Consider the classAB output stage in Figure P8.48....Ch. 8 - For the classAB output stage in Figure 8.36, the...
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